伸和商事 List of Products and Services

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.