Torsion springs, whose ends are rotated in an angular deflection, offer resistance to externally applied torque. Torsion springs are generally close wound. They reduce in body diameter and increase in body length as they are deflected.
Commerce Spring custom manufactures torsion springs using round wire between .008 and .162 in diameter in a variety of material. Most commonly used are Music Wire, Stainless Steel 302, Hard Drawn MB and Galvanized Hard Drawn. Other materials available are: Stainless Steel Type 316 and 17-7 PH, Plated Music Wire, Oil Tempered, Beryllium Copper, Phosphorous Bronze, Inconel, Monel, Brass, Chrome Silicon and Chrome Vanadium and more high temperature and corrosion resistant alloys.
Torsion spring end configurations vary. They may be straight, straight offset, short hook, hinge, or any other special ends.
Once springs are formed, a variety of finishes are available including passivation, zinc, cadmium, black oxide, copper, tinned, paint and others.
Experienced engineers are available to help you determine the best material, end configurations and finish to meet your requirements.