伸和商事 Product Lineup

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

"Quick-cutting brass" is a type of brass that improves machinability by adding nickel and zinc to copper, along with a small amount of lead. "C7941" significantly enhances machinability compared to conventional brass due to the slight addition of lead. It possesses excellent corrosion resistance and machinability, as well as the beauty of its silver appearance and resistance to discoloration. 【Features】 ■ "C7941" significantly improves machinability compared to conventional brass due to the slight addition of lead. ■ It has excellent corrosion resistance and machinability, along with the beauty of its silver appearance and resistance to discoloration. *For more details, please download the PDF or feel free to contact us.

• alloy
• Non-ferrous metals

"Nickel silver" is an alloy made by adding nickel and zinc to copper. "C7521" contains 64% copper, 18% nickel, with the remainder being zinc, and has an average nickel content among nickel silvers. It has a beautiful silver luster and is a copper alloy that is resistant to discoloration. Please feel free to contact us when you need it. 【Features】 ■ High corrosion resistance ■ Workability ■ Moderate strength and high springiness *For more details, please download the PDF or feel free to contact us.

• alloy
• Non-ferrous metals

"High-speed cutting phosphor bronze" is an alloy made by adding tin, lead, and a small amount of phosphorus to copper. The cutting processability, properties, and applications vary depending on the amounts of tin and lead used. "C5341" is an alloy that contains 3.5% to 5.8% tin and 0.8% to 1.5% lead added to copper, while "C5441" is an alloy that contains 3% to 4.5% tin, 3.5% to 4.5% lead (with stock items being less than 4%), and 1.5% to 4.5% zinc added to copper. It has good cutting processability and possesses the mechanical properties of phosphor bronze, making it widely used in various processing methods for products. 【Features】 ■ Mechanical strength ■ High elasticity ■ Cutability ■ Fatigue resistance ■ Wear resistance *For more details, please download the PDF or feel free to contact us.

• alloy
• Non-ferrous metals
• Other electronic parts

"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.

• alloy
• Non-ferrous metals

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.

• Non-ferrous metals
• Processing Contract

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.

• Non-ferrous metals
• Processing Contract
• Coaxial Connectors

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.

• Non-ferrous metals
• Processing Contract

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.

• Non-ferrous metals
• Processing Contract
• alloy