HIGH-ALUMINUM-CONTAINING FERRITIC STAINLESS STEEL HAVING IMPROVED HIGH-TEMPERATURE OXIDATION RESISTANCE

摘要

A ferric stainless steel consists by weight ofless than 0.03 % carbon, less than 1 % silicon, lessthan 1 % manganese, less than 0.04 % phosphorus, lessthan 0.03 % sulphur, from 15 % to 25 % chromium, lessthan 0.03 % nitrogen, from 3 % to 6 % aluminum, from0.1 % to 4 % molybdenum. A small amount of rare-earthelements and yttrium of from 0.01 % to 0.15 % are addedin the steel.