伸和商事 Product Lineup

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.

"Aluminum bronze" is an alloy made by adding tin and a small amount of phosphorus to copper. "C5191" is an alloy with 5.5% to 7% tin added to copper, while "C5212" is a material that has increased hardness by adding even more tin. Since C5191 and C5212 do not contain lead, they are difficult-to-machine materials in precision cutting processes, but they are highly ductile and have good bending and plating properties. 【Features】 ■ Mechanical strength ■ High elasticity ■ Corrosion resistance ■ Fatigue resistance ■ Wear resistance *For more details, please download the PDF or feel free to contact us.

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.

We would like to introduce the free-cutting phosphor bronze rods and general phosphor bronze rods that we handle. Phosphor bronze is an alloy made by adding tin to copper, and it possesses spring properties, corrosion resistance, fatigue resistance, and wear resistance. Its main applications include rods used in gears, shafts, bearings, bolts, nuts, connectors, and more. Free-cutting phosphor bronze is an improved version of phosphor bronze with enhanced machinability by adding lead (Pb). 【Product Lineup】 ■C5191B(PBB2) ■C5212B(PBB3) ■C5341B(PbPBB1) ■C5441B(PbPBB2) ■FX400B *For more details, please refer to the PDF document or feel free to contact us.

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.

Here is a case study of the antibacterial bronze triangle "Ringuru" that we produced. With a diameter of 10mm and a side length of 180mm, we used C5191B-H as the material. The material itself has antibacterial properties, making it suitable as a shared instrument, and it features a soft sound quality, particularly characterized by a long and resonant sustain. 【Features】 ■ A triangle reborn with the "high elasticity" of bronze ■ The material itself has antibacterial properties ■ Well-suited as a shared instrument ■ Soft sound quality, particularly resonant with a long sustain *For more details, please refer to the PDF document or feel free to contact us.

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.

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.

Our company has been a primary wholesaler specializing in unique non-ferrous metals, such as [phosphor bronze bars, nickel silver bars, beryllium copper bars], since its establishment in 1964. Our management philosophy of "coexistence and co-prosperity" is not only about pursuing our own sales and profits but also about making tireless efforts to ensure that all our partners can achieve profits as well. This is our motto. We are determined to become a company that is loved by many customers and will strive to achieve this goal. 【Partner Manufacturers】 ■ Fujii Seisakusho Co., Ltd. (Major trading partner) ■ NGK Insulators, Ltd. (Major trading partner) ■ Oki Shindou Kogyo Co., Ltd. *For more details, please refer to the PDF document or feel free to contact us.

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

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

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

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

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

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

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

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

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

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

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

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.

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

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

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

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

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