We are considering using other materials for compression springs rather than the piano wire and hard steel wire.
In JIS G3521 or 3522, it seems like only the necessary information for considering spring materials such as tensile strength is specified and the specifications such as hardness are not found.
I would like to know about the hardness of the SWP-A/B and SW-A/B/C materials that are usually used for compression springs and the hardness after annealing.
I also would like to know what kind of material is the most suitable for making springs as the selection criterion for us is material with the hardness of Hv400 or more with a low price.
Also, is it possible for you to produce a U-shape spring by pressing a cross-section material into a different shape such as a triangle and then bend it into a U shape with a coiling machine (forming?)
We do not normally measure the hardness of specified materials.
However, it can be converted from tensile strength using the conversion table in the JIS standard for steel. (Unfortunately, it cannot be converted here because the wire diameter is unknown.)
Also, although you need a material with a hardness of Hv400 or more and is cheap, if you let us know the usage conditions and usage environment, we will be able to recommend the suitable material.
