Patent ID: 6783727
Filing Date: 2004-08-31
Classification: C21D,C22C

Abstract:
Steel containing carbon, chromium, silicon, manganese, nitrogen and iron, wherein said steel contains said components in % by weight as follows:carbonfrom 0.01 to 0.04chromiumfrom 21.00 to 24.00siliconfrom 0.25 to 0.65manganesefrom 0.19 to 0.70nitrogenfrom 1.00 to 1.4ironbalance,the silicon, chromium, carbon, nitrogen and manganese, being present in the steel in respective amounts such that 0.48&it;[Si]+[Cr]30&it;[C]+18&it;[N]+0.01&it;[Mn]=from&it;â€ƒ&it;0.8&it;â€ƒ&it;to&it;â€ƒ&it;1.3,wherein [Si], [Cr], [C], [N], [Mn] represent the content in the steel of silicon, chromium, carbon, nitrogen, and manganese, respectively, in % by weight.