Patent ID: 6379611
Filing Date: 2002-04-30
Classification: B23K,C22C

Abstract:
A high strength, low alloy, heat resistant steel having an average crystal grain diameter of at most 110 &mgr;m and consisting essentially of, in mass %:C: 0.03-0.15%Si: at most 1%Mn: at most 2%P: at most 0.03%S: at most 0.03%Ni: at most 0.5%Cu: 0-0.1%Cr: 1.8-2.8%V: 0.1-0.3%Nb: 0.01-0.08%Mo: 0.05-0.35%W: 1.2-1.8%Ti: 0.001-0.05%B: 0-0.02%Al: at most 0.1%O: at most 0.1%N: in an amount satisfying the formula (1)[%N]&lE;[%Ti]+5[%B]+0.004â€ƒâ€ƒ(1) and a remainder of Fe and unavoidable impurities.