Patent ID: 6056917
Filing Date: 2000-05-02
Classification: C21D,C22C

Abstract:
An austenitic stainless steel comprising the following elements in percent by weight based on total weight:0.03%<molybdenum<2%carbon<0.1%0.1%<silicon<1%5%<manganese<9%0.1%<nickel<2%15%<chromium<19%1% copper<4%0.1%<nitrogen<0.40%5.times.10.sup.-4 %<boron<50.times.10.sup.-4 %phosphorus<0.05%sulfur<0.01%and iron and impurities resulting from smelting, whereinthe composition satisfies the following relationship, where SI is the martensite stability index:SI=0.0267x.sup.2 +0.4332x-3.1459<20,wherex=250.4-205.4C %-101.4N %-7.6Mn %-12.1Ni %-6.1Cr %-13.3Cu %.