Use of an air-hardened steel alloy containing alloying additions of silicon, manganese, chromium, molybdenum, aluminum and vanadium in the production of a vehicle component in a hot working process

摘要

Use of an air-hardened steel alloy in the production of a vehicle component in a hot working process is new. The alloy contains (in wt.%) 0.09-0.13 carbon, 0.15-0.30 silicon, 1.10-1.60 manganese, maximum 0.015 phosphorus, maximum 0.011 sulfur, 1.00-1.60 chromium, 0.30-0.60 molybdenum, 0.02-0.05 aluminum, 0.12-0.25 vanadium and a balance of iron. The vehicle component is hardened by quenching and has a tensile strength Rm of 950-1300 n/square mm, a yield point Rp0.2 of 750-1100 N/square mm and an expansion A5 of 7-16%.