is a withdrawn German standard. It was titled “Steel grades with specific magnetic properties – Technical delivery conditions for flat products made of magnetic steel” (roughly: Magnetic steel strip for electrical and electromechanical devices ).
Searching for a is an understandable first step when dealing with legacy spring steel wire. This article has provided the core technical data from that withdrawn standard, explained why copies are rare, and offered legal pathways to obtain a historical document. din 1624 standard pdf
It means the steel is cold-rolled to a smooth, shiny finish (often with surface roughness Ra ≤ 1.0 µm), then typically oiled to prevent rust. It is not hot-rolled, pickled, or coated. is a withdrawn German standard
If you specify this material on a modern drawing, a steel supplier will likely reject it or substitute material certified to DIN EN 10130 or DIN EN 10268 . This article has provided the core technical data