伸和商事 List of Products and Services

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.

We would like to introduce the beryllium copper rods that we handle. Beryllium copper is a material known for its excellent corrosion resistance, high ductility before aging treatment, and increased fatigue resistance and conductivity after aging treatment. Its main applications include aircraft engine parts, propellers, bolts, and cams. 【Overview】 ■ Alloy Number: C1720B (BeCuB) ■ Cu (Copper): - ■ Be (Beryllium): 1.8-2.0 ■ Ni + Co: 0.2 or more ■ Ni + Co + Fe: 0.6 or less ■ Cu + Be + Ni + Co + Fe: 99.5 or more *For more details, please refer to the PDF document or feel free to contact us.

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.

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.

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.

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 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.

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.

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.

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.).

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

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

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

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

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

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

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 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

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

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

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 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