hardened steel /INDUSTRY,INDUSTRY-METAL,ENG-MECHANICAL/
[DE] gehaerteter Stahl
[EN] hardened steel
[FR] acier durci
hardened steel,heat-treated steel /INDUSTRY-METAL/
[DE] Verguetungsstahl
[EN] hardened steel; heat-treated steel
[FR] acier amélioré; acier thermo-traité; acier traité thermiquement