Patent ID: 6423159
Filing Date: 2002-07-23
Classification: C21D,C22C

Abstract:
A sheet of niobium-stabilized chromium ferritic steel comprising iron and the following by weight based on total weight:carbon&lE;0.02%, 0.002%&lE;nitrogen&lE;0.02%, 0.05%&lE;silicon&lE;1%, 0%&lE;manganese&lE;1%, 0.2%&lE;niobium&lE;0.6%, 13.5%&lE;chromium&lE;16.5%, 0.02%&lE;molybdenum&lE;1.5%, 0%0%0%0%0.005%impurities inherent to smelting,wherein the contents of niobium, carbon and nitrogen satisfy the relationship:9.5&lE;Nb/(C+N), and wherein the contents of silicon and manganese satisfy the relationship: Si/Mn>1.