Stainless steels (DIN 17224/EN 10088), medium/high carbon steels (DIN 17223.1), copper alloys (DIN 17666 & 17677.1).
Thicknesses from 0.10 to 3.00 cm.
Various shape springs, from cylindrical to twin-taper/biconvex, with ground and unground ends, cold stress relieved.
Fatigue tests, elasticity measurements, surface treatment thickness measurements, salt mist tests (UNI-ISO 9227).