Used materials

Used materials

The relevant material selection is extremely responsible task and is related to long-term spring operation

The used material are according to the following standards:

EN 10270 – 1 from high-carbon steel

  • Quality SM – for static and medium load
  • Quality SH – for static and high load
  • Quality DM – for dynamic and medium load
  • Quality DH - for dynamic and high load

EN 10270 –2 by CrSi and CrV steels

  • Heat treated in oil
  • Type of steel CrSi – FD - for important functions of the spring and its long term usage
  • CrSi – VD – for important functions of the spring and its long term usage for dynamic load. 100% micro cracks defectoscopy.
  • CrSiV – FD - for important functions of the spring and its long term usage – for operating under temperature of 100-250 C deg.

EN 10270 –3 – corrosion-resistance spring wires