Tecnical information
Choice of material
Customer/Industry
Manufacturer of heavy vehicle components
Background
The customer has an oil tempered spring that was zinc plated. The springs often broke due to hydrogen embrittlement.
Action
Lesjöfors suggested a change of material to EN 10270-3-1.4568 (or SS 2388 which was the old Swedish standard).
Improvement
The customer was able to omit plane grinding, which saved about 3 million crowns/year.