As a rule, appropriately composed and manufactured materials with sufficient ductility and suitable work hardening behavior are used for cold forming.
These are usually low-alloy steels without sulphur with a low carbon content, often with boron content to ensure hardenability. However, higher alloyed steels for high-strength parts or wrought aluminum alloys are also used.


  • use of cold-formable steels, i.e. low-alloy steels with sufficient ductility and a low carbon content
  • depending on the alloy, different strength classes can be achieved
  • the strengths are classified according to DIN EN ISO 898-1
  • we also offer induction or case-hardened steel parts as an option


  • cold-formable wrought aluminum alloys
  • high-strength parts through heat treatment (according to DIN EN 28839)
  • fasteners often AL9 (EN AW-6056) (material)
  • special density 1/3 of steel (2.7 g/cm³) à ideal for consistent lightweight construction
  • good electrical conductivity with low density (compared to copper)
  • aluminum is self-passivating (generally no additional surface coating required for corrosion protection) à optional surfaces available if there is a risk of intergranular corrosion
  • less tool wear during production
  • high-strength aluminum screws: Aludrive®

Copper / brass

  • very good electrical conductivity
  • connecting elements according to DIN EN 28839
  • example alloys: CuNi1Si (high strength), Cu-OFE and Cu-ETP – high conductivity