Tempering and annealing guarantees more uniform mechanical properties than simple cold drawing.
Our trade mark is Becrosi 37® and Becrosi 37 H® for higher tensile strength, according to EN10270-2 norm.
Suspension spring wires are oil tempered or induction hardened chromium-silicon steel wires with a diameter ranging from 8 to 15.5mm. An oil tempered wire acquires its mechanical properties by heat treatment after it has been drawn to its final size.
