伸和商事 List of Products and Services

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

The new low beryllium copper round bar product "ESHT/EHT" is a material that achieves both high conductivity and high strength. It features no need for heat treatment (already heat-treated), is lead-free compliant, and supports high current applications, making it ideal for applications that require reliability. It is primarily available in thin rod sizes, with some free samples available. 【Example of Use Cases】 1. Compliance with Environmental Regulations and Safety Lead-free and low beryllium → Responding to the need to replace conventional materials (such as BeCu) as environmental regulations like RoHS and REACH become stricter. 2. Cost and Process Reduction No heat treatment required → Reduces processing steps, achieving shorter delivery times and cost reductions. It is also suitable for prototype and short delivery projects that avoid complex heat treatment processes. 3. Improved Electrical Properties High conductivity → Suitable for high current applications (semiconductor testing equipment, EV charging connectors, power tools, industrial equipment). Ensures stable operation in signal transmission systems (high-speed communication connectors, semiconductor test sockets). 4. Support for Miniaturization and High Density Thin rod compatibility → For fine probe pins, precision contact components, and small terminals for medical devices. Fits well with semiconductor testing fixtures and communication equipment that are advancing towards higher density. *For more details, please contact us or download the materials.

• Coaxial Connectors
• Non-ferrous metals
• alloy

Phosphor bronze and beryllium copper are generally used as high-strength and high-spring materials in electronic components and mechanical parts among copper alloys, and many of the users are likely to be involved in machining. Our company has a proven track record in sales for various applications, including musical instruments, test pieces, daily products, models, and more, ranging from small quantity sales to mass production. In particular, we can assist with issues such as: - Inability to obtain materials in time - Difficulty in small quantity sales - Lack of mill certificates - No shipping options to remote areas - Uncertainty in arranging environmental documentation - Mistakes in arrangements by the purchasing department There are various reasons and circumstances that may cause difficulties, but in such cases, please feel free to contact us. Additionally, based on our long-standing sales experience, we may be able to obtain products that are not widely available in the market. We have phosphor bronze and beryllium copper in stock in round bars and standard-sized plates.

• Non-ferrous metals
• alloy
• Other electronic parts

The new product "ESHT/EHT" made from low beryllium copper round bars is a material that combines high conductivity and high strength. It features no need for heat treatment, is lead-free, and supports high current applications, making it ideal for applications where reliability is essential. We can provide it primarily in thin rod form. 【Example of Applications】 1. Compliance with Environmental Regulations and Safety Lead-free and low beryllium → Responding to the need to replace conventional materials (such as BeCu) as environmental regulations like RoHS and REACH become stricter, while also focusing on reducing health risks for workers. 2. Cost and Process Reduction No heat treatment required → Reduces processing steps, achieving shorter delivery times and cost reductions. It is also suitable for prototype and short delivery projects that avoid complex heat treatment processes. 3. Improved Electrical Properties High conductivity → Suitable for high current applications (EV charging connectors, power tools, industrial equipment) and applications requiring low contact resistance, ensuring stable operation in signal transmission systems (high-speed communication connectors, semiconductor test sockets). 4. Support for Miniaturization and High Density Thin rod compatibility → Fits applications such as fine probe pins, precision contact components, and small terminals for medical devices, aligning well with the increasing density in semiconductor testing jigs and communication equipment. *For more details, please contact us or download the materials.

• Non-ferrous metals
• Coaxial Connectors
• probe

Beryllium copper is a high-performance alloy that combines multiple properties such as high strength, high electrical conductivity, excellent formability, fatigue resistance, heat resistance, and corrosion resistance. It is widely used as a reliable material in various fields, including automotive, semiconductors, and electronic devices. Our company offers two types of beryllium copper, "high beryllium copper" and "low beryllium copper," based on the difference in beryllium content, and we propose the most suitable materials for each application. ■ High beryllium copper (C1720): It excels in high strength, fatigue resistance, and formability, making it ideal for applications that require mechanical properties. ■ Low beryllium copper (BeCu11, etc.): It combines high electrical conductivity and high strength, making it suitable for applications where electrical performance is prioritized. With the realization of a carbon-neutral society and the advancement of digitalization, beryllium copper plays an important role in product development that demands high performance and high reliability. We also accommodate small lot sizes, short delivery times, and provide free samples. For more details, please contact us or download the materials.

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

Beryllium copper is a high-performance alloy that combines multiple properties such as high strength, high electrical conductivity, excellent formability, fatigue resistance, heat resistance, and corrosion resistance. It is widely adopted as a reliable material in various fields, including automotive, semiconductors, and electronic devices. Our company offers two types of beryllium copper, "high beryllium copper" and "low beryllium copper," based on the difference in beryllium content, and we propose the optimal material for each application. ■ High beryllium copper (C1720): It excels in high strength, fatigue resistance, and formability, making it ideal for applications that require mechanical properties. ■ Low beryllium copper (BeCu11, etc.): It combines high electrical conductivity and high strength, suitable for applications where electrical performance is prioritized. With the realization of a carbon-neutral society and the advancement of digitalization, beryllium copper plays an important role in the development of high-performance and high-reliability products. We also accommodate small lot orders, short delivery times, and provide free samples. Please feel free to contact us.

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

Phosphor bronze is an alloy made by adding tin and a small amount of phosphorus to copper. C5191 is an alloy that contains 5.5% to 7% tin added to copper. C5210 is a material that increases hardness by adding more tin. In particular, C5210 has high spring properties and is suitable for leaf springs with minimal bending processing. 【Features】Mechanical strength, high spring properties, ductility, corrosion resistance, fatigue resistance, wear resistance 【Main Applications】Springs for electronic and electrical equipment, switches, connectors, relays, lead frames, diaphragms, bellows, fuse clips, moving parts, washers, bearings, bushes, etc. We mainly stock standard plates (180mm × 1200mm) from domestic materials (Ooki Shindou Kogyo Co., Ltd.). We can accommodate cutting for thick plate products of 3.0mm or more. Stock items can be sold from one piece. We offer shipping to remote areas. Standard plates are not suitable for large-scale processing but are very convenient for small-scale processing. Please inquire about stock status. We have a rich inventory of plate thicknesses from 0.1mm to 12mm.

• Non-ferrous metals
• Spring

We stock products such as phosphor bronze, nickel silver, and beryllium copper as standard lengths. However, we understand that there are often requests like the following: ■ I would like to have thick materials cut before processing. ■ I need a small quantity, so I would like to purchase in small lots. ■ Due to transportation weight and processing machine specifications, I would like them cut in half before delivery. At Shinwa Shoji, we provide the necessary items in the required quantities with the fastest delivery times. We ship long products (standard round bars of 2000mm to 2500mm) and standard plates, whether in small quantities or over several hundred kilograms, to locations nationwide. If you have any issues, such as needing prototypes or urgent arrangements for copper alloys, please feel free to contact us.

• Non-ferrous metals
• alloy
• switch

Free-cutting phosphor bronze is an alloy made by adding tin, lead, and a small amount of phosphorus to copper. 【Main Uses】Electrical components such as contacts, connectors, bolts, nuts, and motors; electronic and mechanical parts that undergo cutting processes, such as gears and precision clock components. 【Features】Mechanical strength, high elasticity, machinability, fatigue resistance, and wear resistance. It has good machinability and possesses the mechanical properties of phosphor bronze, making it widely used in products with various processing methods. Free-cutting phosphor bronze round bars are available in various sizes from domestic materials (Fujii Manufacturing Co., Ltd.) (φ1.0 to φ150). For more details, please contact us or download the materials.

• Non-ferrous metals
• Other metal materials
• socket