Piano wire types "A" and "B" are widely used, but type "V" does not have good marketability.
The material is "Piano Wire Type A (SWP-A)," and the wire diameter is Φ3.5. Piano wire is the most commonly used material for iron-based spring materials, and there are three types: Type A, Type B, and Type V. Type A (SWP-A) and Type B (SWP-B) are used for high-end springs that require durability and precision. The difference between Type A and Type B is hardness. Type B is harder and has better resistance to deformation, but it has less elongation, making it unsuitable for forming processes like bending and drawing. For products like "twisted coil springs" with bending processes or "tension coil springs" with hook processing, it is common to use Type A due to its good formability. Type V (SWP-V) is a material specialized for valve springs, but it seems to be less commonly used because the material "SWOSC-V" for valve springs is more widely adopted. If you have any issues with springs, please feel free to consult us. Our technical staff will respond carefully. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Tsuruga Spring Co., Ltd. for springs We also support web meetings.
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Tsuruga Spring Co., Ltd. is a spring manufacturer located in Tsuruoka City, Yamagata Prefecture. We specialize in the design and manufacturing of coil springs, as well as wire forming processing. 1) Our strength lies in our ability to respond quickly from design to prototyping. Are you facing issues such as springs breaking, deforming, or being weak? Our technical staff will respond carefully, so please feel free to consult with us. It's okay even if you don't have drawings. 2) We can accommodate a wide range of wire thicknesses from 0.1mm to 10.0mm. We stock piano wire, stainless steel wire for springs, oil-tempered wire, and phosphor bronze wire. We can also handle special spring materials that are outside JIS standards, such as Herculite and SWIC. Additionally, we can accommodate wire diameters exceeding 10mm through outsourcing. 3) We accept orders from one piece to tens of thousands of pieces. Technical Contact: Ujiie Phone: 0235-22-0407 FAX: 0235-22-0546 Email: web@tohj.com Tsuruga Spring Co., Ltd. 〒997-0011 3-10-25 Takarada, Tsuruoka City, Yamagata Prefecture
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