I first of all apologise for my lack of knowledge and details! I manufacture a tape measure type device which has an internal (clock style) return spring. This spring is supplied to us wound and trimmed to length (2100mm x 8mm x 0.127mm) with a 40mm internal Diameter. We reverse wind this spring into our product and the spring is used to recoil the measure. The material is a bright cold rolled high carbon strip 95% carbon (ASA1095) and sorry to say that is all the information I have on the material. This spring is too strong for our application and I wish to reduce it's power. The question is:- is it possible to heat treat this spring to reduce power? I cannot request deferent material or maybe thinner material mainly due to the fact that I purchase fairly small quantities (10,000/year) and costs for a non standard from the supplier are too high.
Cube3 - Creative Product Design