Round spring steel wire:

When it comes to round spring steel wire You can choose between carbon steel or stainless steel:

spring steel wire (patented drawn)
Material Code SH (used to be: "Sorte C")
Tensile strength Depending on the diameter, find a table here
Diameter 0,2-18 mm
Product coils, spools, straightened bars

 

spring steel wire (stainless)
Material Code 1.4310 (X10CrNi18-8)
  Material 1.4404, 1.4401, 1.4571 is available on demand
Tensile strength Depending on the diameter, find a table here
Diameter 0,2-16 mm
Product Coils, spools, straightened bars