Historical
DIN EN 10270-1:2017
Steel wire for mechanical springs - Part 1: Patented cold drawn unalloyed spring steel wire; German version EN 10270-1:2011+A1:2017
This European Standard applies to patented cold drawn unalloyed steel wire of circular cross-section for the manufacture of mechanical springs for static duty and dynamic duty applications.
Deutsches Institut für Normung [din]