伸和商事 Product Lineup

Suddenly, in the past few years, the price of copper has more than doubled. Additionally, compared to a dozen years ago, the unit price of phosphor bronze, including manufacturer processing costs, has skyrocketed to nearly 2 to 3 times higher. Our company is a primary wholesaler (trading company) that stocks and sells rare non-ferrous metals such as phosphor bronze (especially round bars), beryllium copper (round bars and standard plates), and nickel silver (especially round bars). Phosphor bronze and beryllium copper are typically used in large quantities, while for prototypes or irregular one-off items, only a small amount may be used. Nickel silver has a wide range of applications, including fishing gear, models, musical instruments, and decorative items, making it a material that receives many inquiries from general customers. There are fewer manufacturers of these materials compared to brass, and the available stock in the market is limited. Additionally, lead times can take several months or more. Our company particularly stocks a diverse lineup of bar materials. We operate with the motto of "processing sales," where we cut to the necessary lengths for sale, and "same-day delivery" to specified locations. We want to minimize the risks associated with inventory due to rising copper prices, but we also want to secure materials appropriately. We are engaged in activities that respond to such demands. Our company offers proposals that leverage the strengths of "inventory" and "primary trading company."

• Non-ferrous metals
• Other metal materials
• alloy

Beryllium copper is a copper alloy that contains 0.5 to 3% beryllium added to copper, and its greatest feature is that it possesses "strength comparable to steel (special steel) while being copper." 1. Excellent Features High Strength: The highest level among copper alloys (equivalent to special steel). High Electrical and Thermal Conductivity: Moderate conductivity and heat dissipation efficiency 3 to 7 times that of steel. Non-Magnetic: Does not respond to magnetic forces (ideal for precision instruments in MRI and aerospace industries). Non-Combustible: Does not produce sparks even when subjected to impact (explosion prevention). 2. Benefits of Introduction Miniaturization and Longevity: Possesses strong spring properties and strength compared to other copper alloys, allowing for smaller and more durable components. Increased Productivity: Accelerates mold cooling and shortens molding cycles. High Reliability: Stable even in harsh environments such as seawater and strong magnetic fields. 3. Typical Applications Electronic Devices: Connectors for smartphones, automobiles, and electronic devices. Precision Molds: Cooling inserts for plastic molding. Safety Tools: Explosion-proof tools (wrenches, hammers) for environments where sparks are undesirable. Large Infrastructure: Landing gear bushings for aircraft, submarine cables. The primary applications are in semiconductors, automobiles, and aircraft, where high reliability is required.

• Non-ferrous metals
• Plastic Mould
• Processing Jig

Nickel silver is a silver-white alloy composed of copper, nickel, and zinc. Although it contains no silver at all, it is often referred to as "German silver" or "nickel silver" due to its beautiful luster. Nickel silver is primarily valued for its aesthetic appeal, good workability typical of copper alloys, high corrosion resistance, and the unique strength and springiness of the alloy. Generally, it is used in items such as tableware (cutlery), musical instruments, fishing gear, and model parts due to its color, workability, and corrosion resistance. Nickel silver is easier to work with than stainless steel and is less expensive than silver. It has the potential to be used more than stainless steel in decorative items (accessories) and models in the future. Additionally, in recent years, as the prices of precious metals like gold and silver have soared, nickel silver has been chosen as an alternative material for decorative items. When precision machining is required, there is also free-cutting nickel silver available, making it a frequently mentioned option as a substitute for silver. Although it is not visible, it is sometimes used in highly corrosive environments (such as underwater or coastal areas) and in factories as spring materials or structural components. Among copper alloys, it has excellent salt resistance and is relatively durable, making it suitable for use in places where contacts or plating are not applied.

• Non-ferrous metals
• alloy
• Other machine elements

The reason why phosphor bronze is widely chosen for precision components in electronic parts (such as connectors) is not only due to its high hardness but also because it possesses excellent spring properties (elasticity), outstanding fatigue resistance, and advanced technical characteristics known as "stress relaxation resistance," which enable it to maintain stable performance over long periods. The biggest difference between bronze and phosphor bronze lies in the presence and role of phosphorus (P). Phosphor bronze can be considered a higher-function alloy that dramatically improves the properties of traditional bronze through the deoxidizing effect of phosphorus. While maintaining the workability of bronze, it also enhances strength and toughness through alloying. The characteristics of phosphor bronze include a significant improvement in the "spring limit (the force to return to its original shape)" and "fatigue resistance" compared to bronze. It is an ideal material for components that require high reliability, such as the leaf springs and contacts of switches that must endure millions of cycles of operation. Due to these properties, phosphor bronze is predominantly used in products in the form of sheets, strips, or foils. However, product forms such as round bars and wires are also common. Round bars and wires are used in springs, screws, nuts, bearings, contacts, gears, connectors, and semiconductor devices. For more details, please contact us.

• alloy
• Non-ferrous metals
• Coaxial Connectors

In the electronics industry, connectors are crucial components that influence the performance and reliability of products. Connectors require high conductivity, mechanical strength, and wear resistance. Inappropriate material selection can lead to poor contact and damage, potentially compromising the overall reliability of the product. The free-cutting phosphor bronze manufactured by Fujii Seisakusho, a domestic company, addresses these challenges and contributes to the improvement of connector quality. 【Target Audience】 - Electronics manufacturers - Connector manufacturers - Manufacturers of various electronic components 【Benefits of Implementation】 - Improved durability and machinability of connectors - Enhanced product reliability - Shortened delivery times due to improved machinability Shinwa Shoji has a large stock of various phosphor bronzes. If you need to meet a deadline, want to use a small amount for prototyping, or wish to arrange for a substitute for defective products, please let us know, and we will prepare it for you. We can also sell cut-to-length pieces as needed, so please feel free to reach out to us.

• Non-ferrous metals
• Other metal materials
• socket

Contact probes are fine contact components used to evaluate the electrical performance (conductivity, current, functionality, aging, etc.) of chips and wafers. They are essential for quality assurance before product shipment and for the early detection of defects, and their measurement accuracy and contact stability are directly linked to product yield and quality. Recently, with the miniaturization and high integration of semiconductors, there is a demand for even higher performance in probes. Specifically, this involves fine pitch and miniaturization. Stable material precision is essential, especially for fine and high-precision machining. By finishing the outer diameter of free-cutting phosphor bronze round bars, which are cold-drawn materials, it is possible to process them into ultra-high precision materials with an outer diameter tolerance of within 0.005 mm (5 μm). Additionally, high-precision outer diameter grinding typically takes significantly longer than usual. At Shinwa Shoji, we consider this lead time issue as an important procurement method to prevent our customers' production lines from stopping, by combining "manufacturing procurement" and "inventory provision" rather than just material purchasing. We aim to assist in procurement to collaboratively create products with our customers. Please feel free to contact us regarding this matter.

• probe
• Semiconductor inspection/test equipment
• Non-ferrous metals

In the electronics industry, connectors, which are electrical contacts, are crucial components that influence the reliability of products. In particular, high connectivity and durability are required, and it is essential to demonstrate stable performance even in harsh environments. The materials for connectors must not only be reliable but also possess high strength, springiness, corrosion resistance, fatigue resistance, and wear resistance. Phosphor bronze has a proven track record due to its excellent workability. The free-cutting phosphor bronze rods and general phosphor bronze rods we offer are optimal materials that meet these demands. (Representative examples: C5191, C5212, C5341, C5441, C5099) 【Application Scenarios】 - Manufacturing of electronic devices - Improvement of workability for precision instruments - Manufacturing of connectors and precision parts for communication equipment 【Benefits of Implementation】 - Enables the provision of various types of phosphor bronze (from free-cutting materials to high-spring materials) - Improved durability of connectors - Enhanced reliability of products

• Non-ferrous metals
• Processing Contract

In the semiconductor manufacturing equipment industry, high-precision component processing is required. Components must be easy to process and supplied stably, and jigs play a crucial role in positioning and securing parts during the manufacturing process, affecting the overall accuracy of the equipment. Contacts must reliably conduct electricity, be resistant to pressure, and possess excellent repeatability, along with high strength and wear resistance. Both must withstand harsh conditions and prolonged use. Free-cutting phosphor bronze rods and general phosphor bronze rods are optimal materials that meet these demands. 【Application Scenarios】 - Jigs for semiconductor manufacturing equipment - Electrical contacts - Components subjected to repeated pressure - Fasteners for high-precision parts - Positioning jigs - Switches, connectors, etc. 【Benefits of Implementation】 - Increased lifespan due to high strength and wear resistance - Improved durability under repeated stress - Enhanced equipment accuracy through precise processing - Realization of stable manufacturing processes

• Non-ferrous metals
• Processing Contract

In the electronics industry, especially in connector applications, high conductivity and strength are required. Connectors are crucial components that influence the performance of electronic devices, and ensuring reliable connections is essential. Using low-quality materials can lead to contact failures and signal attenuation, potentially resulting in device malfunctions. Our low beryllium copper round bars achieve both high conductivity and high strength, contributing to improved connector performance. 【Application Scenarios】 - EV charging connectors - Semiconductor test sockets and pins - High-speed communication connectors 【Benefits of Implementation】 - Stable signal transmission due to high conductivity - Cost and process reduction by eliminating the need for heat treatment - Compliance with environmental regulations through lead-free options

• Coaxial Connectors
• Non-ferrous metals
• alloy

In the robotics industry, sensors and motor applications require high precision and durability. Particularly for components used in harsh environments, the selection of materials significantly affects performance. Phosphor bronze, nickel silver, and beryllium copper possess excellent machinability and mechanical properties, contributing to the miniaturization and high precision of parts. Our products meet customer needs by providing these materials in the required quantities and with short lead times. [Application Scenarios] - Sensor components for robotic arms - Position detection sensors - Stepping motor components - Stator components for ultrasonic motors - Contacts for environmental sensors, etc. [Benefits of Implementation] - Ability to purchase only the necessary materials in the required amounts - Short delivery times - Reduction in prototyping costs

• Other machine elements
• Non-ferrous metals
• alloy

In the semiconductor manufacturing industry, the precision and durability of jigs significantly affect product quality. In particular, appropriate material selection is essential for jigs that require high-precision positioning or must withstand thermal loads. Low-quality materials can adversely impact the manufacturing process, potentially leading to reduced yield and product defects. Our products offer materials such as phosphor bronze, nickel silver, and beryllium copper, which possess high strength and wear resistance, contributing to the performance improvement of jigs in semiconductor manufacturing. 【Application Scenarios】 - High-precision positioning jigs - Jigs with high thermal loads - Jigs for microfabrication 【Benefits of Implementation】 - Delivery of the necessary products in the required quantities - Immediate availability of environmental materials and mill sheets (strength of direct delivery wholesalers) - Extended lifespan of jigs - Stabilization of the manufacturing process - Improvement of product quality

• Other machine elements
• Non-ferrous metals
• alloy

In the marine propeller industry, materials that balance corrosion resistance and strength are in demand. It is particularly important to be resistant to corrosion and wear in seawater environments and to maintain performance over long periods. Inappropriate material selection can lead to early deterioration of the propeller and a decline in performance, potentially resulting in increased operating costs and safety issues. Our company offers the optimal materials for propeller manufacturing, including phosphor bronze, nickel silver, and beryllium copper, to meet our customers' needs. We also provide long products and can cut and sell them to the necessary length for shafts. 【Application Scenarios】 - Propeller manufacturing - Ship component (shaft) manufacturing - Marine equipment manufacturing 【Benefits of Implementation】 - Balancing corrosion resistance and strength - Ability to purchase only the necessary amount of materials - Short delivery times - Cost reduction

• Other machine elements
• Non-ferrous metals
• alloy

In the electronics industry, there is a trend towards miniaturization and high performance of terminals, leading to a demand for reliable materials. Particularly for terminals that are subjected to repeated use or high-temperature environments, materials with excellent wear resistance, conductivity, and heat resistance are essential. Inappropriate material selection can lead to contact failures and reduced product lifespan. The products we offer address these challenges and support high-quality terminals and manufacturing component materials. 【Application Scenarios】 - Manufacturing of electronic device terminals - Connector components - Switch components - Relay components 【Benefits of Implementation】 - Short delivery times (immediate delivery if in stock) - Manufacturing of high-quality terminals - Improved product reliability - Cost reduction - Product traceability (direct delivery from manufacturers) and provision of various environmental documentation.

• Other machine elements
• Non-ferrous metals
• alloy

In the mold industry, selecting mold materials is crucial for balancing product quality and production efficiency. Insert components require high strength and wear resistance, while chill vents are ideal for high-cycle product manufacturing due to their thermal conductivity and high strength. Beryllium copper has excellent strength and can withstand high pressure, contributing to the longevity of molds, and the C1720 beryllium copper alloy is the optimal material that meets these demands. It excels in high strength, fatigue resistance, and formability, making it suitable for applications that require mechanical properties. Our company always stocks C1720 plates and round bars manufactured by NGK Insulators, enabling us to supply them on short notice. 【Usage Scenarios】 - Injection molding molds - Press molds - Die-casting molds 【Benefits of Implementation】 - Extended mold life - High dimensional accuracy - Improved productivity

• Other metal materials
• Non-ferrous metals
• Other Connectors

In the watch industry, the durability and reliability of springs that support precise movements are crucial. In particular, high strength and fatigue resistance are required to withstand prolonged use and repetitive actions. The failure of a spring can lead to the complete malfunction of the watch, potentially undermining customer trust. Our beryllium copper alloy C1720 excels in high strength and fatigue resistance, making it an ideal material for watch springs. 【Application Scenarios】 - Luxury watches - Precision instruments - Springs that require durability 【Benefits of Implementation】 - Increased lifespan of springs - Improved product reliability - Enhanced customer satisfaction

• Other metal materials
• Non-ferrous metals
• Other Connectors

In the aerospace industry, high safety and reliability are required, and materials that can maintain performance even in harsh environments are essential. In particular, for bushing applications, materials that are strong against friction and wear, and possess high strength and durability, are important. C1720 beryllium copper alloy has excellent properties that meet these demands. We always stock C1720 beryllium copper alloy manufactured by NGK Insulators, providing the ideal material for aerospace bushings. 【Application Scenarios】 - Aircraft engine components - Aircraft landing gear - Structural components of space rockets 【Benefits of Implementation】 - Extended lifespan of parts due to high strength and wear resistance - Stable performance maintenance in harsh environments - Improved safety due to high reliability

• Other metal materials
• Non-ferrous metals
• Other Connectors

In the medical device industry, precise parts processing is required. Especially for components where durability and appearance are important, ease of machining, a beautiful silver appearance, and corrosion resistance that is not prone to discoloration are crucial. Free-cutting brass round bars (C7941) can meet these needs. 【Application Scenes】 - Parts for precision medical devices - Surgical instruments - Other precision components 【Effects of Introduction】 - Increased work efficiency due to improved machinability - Enhanced product quality due to a beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the jewelry industry, precise processing of decorative components and a beautiful appearance are required to highlight the beauty of the products. Especially for decorative components that are central to the design, ease of machining, a beautiful silver color, and corrosion resistance that is not prone to discoloration are important. Free-cutting brass round bars (C7941) can meet these needs. 【Usage Scenarios】 - Decorative components for accessories - Design parts for jewelry - Wire for decorative items 【Benefits of Introduction】 - Increased work efficiency due to improved machinability - Enhanced product quality due to a beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the musical instrument parts industry, precise processing that affects tone and appearance is required. Particularly for parts that balance the aesthetics and functionality of instruments, ease of machining, a beautiful silver appearance, and corrosion resistance that is not prone to discoloration are important. Free-cutting brass round bars (C7941) can meet these needs. 【Usage Scenarios】 - Metal parts for instruments - Decorative parts - Other precision parts 【Benefits of Implementation】 - Increased work efficiency due to improved machinability - Enhanced product quality due to a beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the camera industry, the durability and appearance of products are important. In particular, screws that are essential for camera assembly require high precision machining, a beautiful appearance, and resistance to corrosion. Free-cutting brass round bars (C7941) can meet these needs. 【Usage Scenarios】 - Camera screws - Tripod screws - Other camera-related parts 【Benefits of Implementation】 - Increased work efficiency due to improved machinability - Enhanced product quality due to a beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the model railway industry, wheels, which influence the completeness of models, require precise processing and a beautiful appearance. The ease of machining, the beautiful silver appearance, and corrosion resistance that is not prone to discoloration are important. Free-cutting brass round bars (C7941) can meet these needs. 【Usage Scenarios】 - Wheels for model railways 【Benefits of Introduction】 - Increased work efficiency due to improved machinability - Enhanced product quality due to the beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the watch industry, the quality of springs that support precise movements greatly influences the reliability of products. In particular, durability, wear resistance, and accurate resilience are crucial factors that determine the performance of a watch. Materials such as phosphor bronze, nickel silver, and beryllium copper possess excellent properties that meet these demands. However, procuring the necessary materials in the required quantities can pose challenges during prototyping and repairs. Our products address these challenges. Additionally, nickel silver is sometimes used for watch cases and decorations, valued for its corrosion resistance and beautiful silver luster. 【Usage Scenarios】 - Spring components in watch manufacturing - Replacement of spring components in watch repair - Use as cases and decorations 【Benefits of Implementation】 - Stable supply of high-quality spring materials - Quick procurement of components - Support for prototyping and small-scale production

• Other machine elements
• Non-ferrous metals
• alloy

In the jewelry industry, the diversification of designs has led to a demand for various metal materials. Particularly in the prototyping and small-scale production of decorative items, it is important to procure the necessary materials in the required quantities. Additionally, high workability is also sought after, and there may be demands for short delivery times. Our products are sold in cut lengths starting from a minimum of 3mm in phosphor bronze, nickel silver, and beryllium copper to meet our customers' needs. 【Usage Scenarios】 - Accessory production - Engraving - Jewelry design 【Benefits of Implementation】 - Ability to purchase only the necessary materials in required amounts - Short delivery times - Support with a rich inventory of various sizes

• Other machine elements
• Non-ferrous metals
• alloy

In the home appliance industry, switches are crucial components that affect the operability and safety of products. Switch failures can lead to product malfunctions or accidents, so high durability and reliability are required. Phosphor bronze, which combines high mechanical strength, springiness, and corrosion resistance, is the ideal material for manufacturing switches. Phosphor bronze standard plates contribute to the improvement of switch quality due to these characteristics. 【Application Scenarios】 - Switches for home appliances - Switches for lighting fixtures - Switches for electronic devices 【Effects of Implementation】 - Improved durability of switches - Increased reliability of products - Long-term cost reduction

• Non-ferrous metals
• Spring

In the robotics industry, sensor applications require high precision and durability. It is important to withstand use in harsh environments and to demonstrate stable performance over long periods. Phosphor bronze excels in mechanical strength, high elasticity, corrosion resistance, and fatigue resistance, making it ideal as a key component in sensors. Its high elasticity also makes it very useful as contacts and switches. Phosphor bronze standard plates are available in a wide range of thicknesses and high-quality materials backed by years of proven performance to meet these demands. 【Application Scenarios】 - Sensors for robotic arms - Position detection sensors - Force sensing sensors - Various spring materials, switches, and contacts 【Benefits of Implementation】 - Improved durability of sensors - Achievement of high-precision operation - Cost reduction through increased lifespan

• Non-ferrous metals
• Spring
• Transport and handling robots

In the electronics industry, connectors are crucial components that influence the reliability of products. They require high conductivity, durability, and precise machining accuracy. The performance of connectors affects the operation of the entire electronic device, making material selection extremely important. Phosphor bronze possesses excellent characteristics that meet these demands. Phosphor bronze standard plates solve challenges in connector manufacturing and contribute to the creation of high-quality products. 【Application Scenarios】 - Connectors for electronic devices - Switches - Relays - Lead frames 【Benefits of Implementation】 - Reliable connections due to high springiness - Long-term reliability due to excellent corrosion resistance - Flexible response due to a wide variety of plate thicknesses

• Non-ferrous metals
• Spring
• Other Connectors

In the semiconductor manufacturing industry, precision machining and high durability are essential for jigs. In particular, they must withstand high-temperature environments and heavy loads while maintaining dimensional stability. The quality of the jigs significantly affects the accuracy and yield of semiconductor products, making the selection of reliable materials crucial. C1720 beryllium copper combines high strength, fatigue resistance, and excellent formability, contributing to solving the challenges of jigs in semiconductor manufacturing. We have a wide range of thicknesses available, from 0.06mm to 50mm. Additionally, since beryllium copper becomes stronger through heat treatment, please consult us regarding heat treatment. It excels in strength and conductivity, making it a versatile material used in various applications. 【Usage Scenarios】 * Jigs for wafer transport * Inspection jigs * Assembly jigs 【Benefits of Implementation】 * Enables high-precision machining * High durability for longer lifespan * Improved yield due to dimensional stability

• Other metal materials
• Non-ferrous metals
• Other Connectors

In the electronics industry, connectors are crucial components that influence the reliability of products. In particular, they must meet demands for contact resistance, repeated operation, signal transmission stability, and product durability, and they need to withstand use in harsh environments. Poor contact in connectors can lead to complete malfunction of the equipment, making material selection extremely important. C1720 beryllium copper excels in high strength, high conductivity, fatigue resistance, and corrosion resistance, contributing to the performance improvement of connectors. 【Application Scenarios】 * Connectors for electronic devices * Connectors for precision instruments * Connectors for communication equipment 【Benefits of Implementation】 * Achieving highly reliable connectors * Extending product lifespan * Ensuring stable signal transmission * Withstanding use in harsh environments

• Other metal materials
• Non-ferrous metals
• Other Connectors

In the model parts industry, precision machining and beautiful appearance are required. In particular, for wheels, which influence the overall quality of the model, ease of machining, a beautiful silver appearance, and corrosion resistance that is not prone to discoloration are important. Free-cutting brass round bars (C7941) can meet these needs. 【Application Scenes】 - Wheels for railway models - Wheels for miniature cars - Other precision model components such as lines and spokes 【Benefits of Implementation】 - Improved work efficiency due to enhanced machinability - Higher product quality due to a beautiful silver appearance - Long-lasting maintenance of a beautiful appearance that is resistant to discoloration

• alloy
• Non-ferrous metals

In the jewelry industry, design and durability are essential. For example, clasps not only affect the aesthetic of the product but also need to withstand long-term use. It is important to choose materials that are resistant to discoloration and have excellent workability. Free-cutting brass round bars (C7941) meet these needs. 【Usage Scenarios】 * Clasps for necklaces and bracelets * Parts for earrings and ear studs * Decorative metal fittings for bags and wallets 【Benefits of Introduction】 * Enhances product value with a beautiful silver appearance * Excellent workability allows for easy production of complex-shaped clasps * Corrosion resistance maintains aesthetic appeal over a long period

• alloy
• Non-ferrous metals

In the semiconductor manufacturing industry, the selection of materials is crucial for fixtures that require precise processing and high durability. Particularly for fixtures that must withstand high-temperature environments and heavy loads, as well as maintain dimensional stability, materials with excellent properties are essential. Beryllium copper possesses high strength, wear resistance, heat resistance, and excellent formability, making it one of the optimal materials to meet the demands of fixtures in semiconductor manufacturing. The beryllium copper alloy from NGK that we handle maximizes these properties and contributes to the efficiency and quality improvement of semiconductor manufacturing. 【Application Scenarios】 - Wafer transport fixtures - Probe pins - Dicing blade holding fixtures - Other fixtures requiring high precision 【Benefits of Implementation】 - Extended lifespan of fixtures - Achievement of high dimensional accuracy and stability - Streamlining of manufacturing processes - Improvement in product quality

• Non-ferrous metals
• Coaxial Connectors
• Other machine elements

In the aerospace industry, safety and reliability are of utmost importance, and components that can perform at high levels even in harsh environments are required. High strength, wear resistance, heat resistance, and corrosion resistance are essential in the aerospace sector. Any defects in components can lead to serious accidents, so careful attention is needed in material selection. Our NGK-made beryllium copper alloy is a high-performance alloy developed to meet these demands. 【Application Scenarios】 - Aircraft engines - Aircraft structural components - Space exploration vehicle parts 【Benefits of Implementation】 - Improved durability due to high strength - Extended lifespan due to wear resistance - Enhanced reliability due to heat and corrosion resistance

• Non-ferrous metals
• Coaxial Connectors
• Other machine elements

In the automotive industry, the miniaturization and high performance of connectors are advancing, and high reliability is required. Connectors are used in harsh environments exposed to vibrations and temperature changes, so high strength and conductivity are essential. Beryllium copper alloy is the optimal material to meet these demands. Our NGK beryllium copper alloy combines high strength, high conductivity, and excellent formability, contributing to the performance improvement of connectors. 【Application Scenarios】 - Automotive connectors - Electrical components - Wire harnesses 【Benefits of Implementation】 - Improved durability of connectors - Enhanced reliability of electrical connections - Increased product lifespan

• Non-ferrous metals
• Coaxial Connectors
• Other machine elements

In the mold industry, selecting mold materials is crucial to achieving both product quality and production efficiency. In particular, insert components require high strength and wear resistance. Damage or deterioration of inserts can shorten the lifespan of molds and reduce production efficiency. The beryllium copper alloy we handle combines high strength, fatigue resistance, and excellent formability, making it an ideal material for mold inserts. 【Application Scenarios】 - Injection molding molds - Press molds - Die-casting molds 【Benefits of Implementation】 - Longer mold lifespan - Maintenance of high dimensional accuracy and quality - Increased productivity

• Non-ferrous metals
• Coaxial Connectors
• Other machine elements

In the manufacturing of musical instruments, tone quality and durability are extremely important factors. The materials used must possess vibration characteristics and corrosion resistance. Phosphor bronze is a material that meets these requirements. Free-cutting phosphor bronze rods and general phosphor bronze rods have high strength while also possessing springiness, corrosion resistance, fatigue resistance, and wear resistance, making them very easy to process. They contribute to the improvement of the quality of various components. 【Application Scenarios】 - Manufacturing of reeds for saxophones and clarinets - Manufacturing of mouthpieces for brass instruments - Manufacturing of parts for reed instruments - Parts for percussion instruments - Triangles, etc. - Manufacturing of beaters 【Effects of Introduction】 - Improved durability of reeds - Enhanced stability of tone quality - Extended lifespan of instruments

• Non-ferrous metals
• Processing Contract

In the semiconductor manufacturing equipment industry, jigs that require high precision in positioning, fixing, and thermal conductivity are essential. Particularly for jigs that handle wafers and substrates, high strength, wear resistance, and precise machinability are indispensable. Inappropriate materials or processing can lead to a decline in equipment performance or failure. Our free-cutting phosphor bronze rods and general phosphor bronze rods are the optimal materials to meet these demands. 【Application Scenarios】 - Jigs for wafer transport - Jigs for substrate fixation - Precision positioning jigs for components 【Benefits of Implementation】 - Increased longevity of jigs due to high strength and wear resistance - Achieving high precision positioning through excellent machinability - Ability to deliver in a short time frame due to ample inventory

• Non-ferrous metals
• Processing Contract

In the medical device industry, precision components require high strength and corrosion resistance. Additionally, since these products are related to human life, the reliability of the components is extremely important. Phosphor bronze possesses excellent characteristics that meet these demands. The phosphor bronze rods we handle are high-strength yet excel in corrosion resistance, fatigue resistance, and wear resistance, making them ideal for precision components in medical devices. In particular, there are very few wholesalers in Japan that maintain a steady stock of C5212 and C5099. 【Application Scenarios】 - Medical testing equipment - Surgical instruments - Precision measuring instruments 【Benefits of Implementation】 - Extended product lifespan due to high durability - Improved product reliability due to high corrosion resistance - High-precision component manufacturing through precision machining

• Non-ferrous metals
• Processing Contract

In the aerospace industry, high safety and reliability are required, and components must possess excellent strength, wear resistance, and fatigue resistance. Bushings play a crucial role in reducing friction in moving parts and preventing wear. Phosphor bronze has excellent properties that meet these demands, making it ideal for aerospace applications. Our free-cutting phosphor bronze rods and general phosphor bronze rods are available in a wide range of sizes and abundant stock to meet our customers' needs. 【Application Scenarios】 - Aircraft engine components - Aircraft landing gear - Aircraft control systems 【Benefits of Implementation】 - Increased longevity of components due to high strength and wear resistance - Improved efficiency through reduced friction resistance - Stable performance maintenance under harsh environmental conditions

• Non-ferrous metals
• Processing Contract

In the automotive industry, high durability and wear resistance are required for motor bearings. Since they are used in harsh environments such as engines and transmissions, the performance of the bearings affects the overall reliability of the vehicle. Proper material selection is essential to extend product life and reduce maintenance costs. The free-cutting phosphor bronze rods and general phosphor bronze rods we handle are copper alloys that excel in high strength and wear resistance to meet these demands. 【Application Scenarios】 - Automotive bearings - Ultrasonic motor stators - Transmission components - Engine components 【Benefits of Implementation】 - Extended bearing lifespan - Improved wear resistance - Reduced maintenance costs - Enhanced vehicle reliability

• Non-ferrous metals
• Processing Contract

In the electronics industry, connectors are crucial components that influence the reliability of products. In particular, reliable transmission of electrical signals and long-term durability are required. The materials for connectors must possess high strength, elasticity, corrosion resistance, fatigue resistance, and wear resistance, and phosphor bronze is chosen as a material that meets these characteristics. Our free-cutting phosphor bronze rods and general phosphor bronze rods are products that meet these demands. 【Application Scenarios】 - Manufacturing connectors for electronic devices - Connection parts for electronic components - Parts for precision instruments 【Benefits of Implementation】 - Improved durability of connectors - Enhanced reliability of products - Long-term cost reduction

• Non-ferrous metals
• Processing Contract

Beryllium copper is an alloy that adds a small amount of beryllium to copper. It has the highest strength among copper alloys, possesses high springiness, and features non-magnetic properties, spark-free operation, and high corrosion resistance. Furthermore, it has properties suitable for metal processing, molding, and machining, and is widely used in mechanical parts, electrical and electronic component contacts and switches, electrodes requiring strength and conductivity, heat-resistant wires, brushes, sockets, and probe pins. Beryllium copper undergoes precipitation hardening, where beryllium precipitates within the structure, resulting in tensile strength and hardness values that are among the highest for copper alloys (up to 1500 N/mm² for C1720). This process is known as aging treatment (heat treatment); however, after aging treatment, there can be cases where bending processing leads to cracking or where machining resistance is high, making it difficult to process effectively. Since its machinability is not as good compared to brass, it is often the case that the material is partially processed before heat treatment for finishing, or that aging treatment is performed after machining. There are recommended settings for heat treatment that are somewhat fixed. Our company collaborates with businesses that have heat treatment furnaces to provide aging treatment for materials purchased from us, such as those from NGK (Nippon Gas Co., Ltd.).

• Coaxial Connectors
• Non-ferrous metals
• socket

Beryllium copper is a copper alloy with various characteristics, including strength, conductivity, formability, fatigue properties, heat resistance, corrosion resistance, non-magnetism, and improved hardness through heat treatment. It possesses strength and hardness comparable to stainless steel, while also having relatively high conductivity, making it one of the most outstanding performers among copper alloys. Among these, the 25 alloy (C1720), which excels in strength and hardness, is widely used, while the 11 alloy is utilized for applications requiring conductivity. In particular, in applications such as connectors and switches where formability, strength, and fatigue properties are crucial, as well as in probe pin applications where hardness and conductivity are emphasized, there is a trend towards miniaturization and thin-walling of components. Given the extensive track record and frequent use of beryllium copper in high-strength materials, it is expected to be a popular choice. This time, we introduce a new 11 alloy that offers higher strength and hardness than the conventional 11 alloy, while providing better conductivity than the 25 alloy. Additionally, while traditional beryllium copper requires heat treatment, this new alloy is heat-treated, eliminating the need for further heat treatment (it has high dimensional stability). Beryllium copper BeCuB11-ESHT/EHT is a product developed for probe pins and connectors. For more details, please download the materials and contact us.

• Non-ferrous metals
• probe
• Coaxial Connectors

Nickel silver is an alloy made by adding nickel and zinc to copper. It has a beautiful silver luster and is a type of copper alloy with high corrosion resistance and fatigue resistance, making it difficult to discolor in air and seawater. Lead-added free-cutting nickel silver is rich in machinability and is easy to process even with general-purpose lathes, making it suitable for various applications. We have a large stock of nickel silver and free-cutting nickel silver round bars, with short delivery times and immediate availability. Our company is the only one in the country that stocks a wide range of sizes. We perform cutting processes in-house and can sell even one piece. We also accommodate prototypes and small-scale processing. Applications and Case Studies: Eyeglasses, musical instruments, fishing gear, decorative items, model trains, keys, automotive parts, marine components, etc. Due to the wide range of applications, we receive inquiries from various users. We also sell to general customers, individuals processing items, and hobbyists.

• Non-ferrous metals
• Other food machinery
• alloy

Phosphor bronze is a copper alloy primarily used in electrical and electronic components as contacts and conductive terminals. It is an alloy made by adding tin and a small amount of phosphorus to copper, resulting in a material with excellent spring properties and adjustable hardness and workability depending on the amount of tin and the finishing treatment. It is used in numerous products, particularly in electronic components, such as connectors, switches, and relays, where repeated operations and contact points are involved. As a copper alloy, it encompasses essential properties required for electrical and electronic components, including wear resistance, high strength, high heat resistance, and springiness, making it one of the important materials supporting modern society. Phosphor bronze is chosen for its price, performance, and availability, as well as its long-standing track record and reliability. Our company stocks standard sheets and round bars of phosphor bronze. We have a particularly rich lineup of phosphor bronze, including spring phosphor bronze in addition to the standard variety. If you are interested in any products, please feel free to contact us.

• Other electronic parts
• Other machine elements
• relay

Phosphor bronze, nickel silver, and beryllium copper are available in standard lengths, mostly 2000mm or 2500mm. However, many customers prefer to purchase cut pieces due to prototyping, the machines used, and transportation considerations, especially for free-cutting materials, where most thicker items are sold as cut pieces. Shinwa Trading conducts processing and sales through band saw cutting, providing cutting and delivery with the shortest lead time. In recent years, the miniaturization of electronic and electrical components has led to a demand for lighter, thinner, and smaller materials. Particularly, the prices of copper alloys have risen, and there is a desire to purchase only the necessary materials in the required amounts for product prototyping, which often requires advanced processing. Sales are available from a minimum length of 3mm (or 8mm depending on the diameter). We can also accommodate small quantities of various types. We can provide various mill sheets and environmental materials for our products. Phosphor bronze (C5191/C5212) Free-cutting phosphor bronze (C5341/C5441) Nickel silver (C7521) Free-cutting nickel silver (C7941) Beryllium copper (25 alloy) We also offer cut sales of some thick phosphor bronze plates and beryllium copper thick plates and blocks. We appreciate your consideration of these as well.

• Other machine elements
• Non-ferrous metals
• alloy