Heat resistant hot formable austenitic steel

摘要

The invention relates to a heat resistant hot formable austenitic steel consisting of (in % by weight) -carbon0.10 to0.20-silicon2.5 to3.0-manganese0.2 to0.5-phosphorusmax0.015-sulphurmax0.005-chromium25 to30-nickel30 to35-aluminium0.05 to0.15-calcium0.001 to0.005-rare earths0.05 to0.15-nitrogen0.05 to0.20- residue iron and the usual impurities due to melting.