Patent ID: 9039961
Filing Date: 2015-05-26
Classification: C21D,C22C

Abstract:
1. Low-nickel austenitic stainless steel with high resistance to delayed cracking wherein the steel contains in weight % 0.02-0.15% carbon, 7-15% manganese, 14-19% chromium, 0.1-4% nickel, 0.1-3% copper, 0.05-0.35% nitrogen, the balance of the steel being iron and inevitable impurities, and a drawing ratio at least 2.0 in deep drawing is achieved to the steel without occurrence of delayed cracking, and the combination of the sum of carbon and nitrogen contents (C+N) and the austenite stability determined by experimentally measured M d30 -temperature of the steel is inside the area defined by the points ABCD which have the following values