Patent ID: 8747733
Filing Date: 2014-06-10
Classification: C21D,C22C,F01D,F05D

Abstract:
1. A precipitation hardenable martensitic stainless steel containing at a mass rate, C: 0.05-0.10%, Cr: 12.0-13.0%, Ni: 6.0-7.0%, Mo: 1.0-2.0%, Si: 0.01-0.05%, Mn: 0.06-1.0%, Nb: 0.3-0.5%, V: 0.3-0.5%, Ti: 1.5-2.5%, Al: 1.0-2.3%, and the remainder consisting of Fe and an unavoidable impurity, wherein the precipitation hardenable martensitic stainless steel satisfies all conditions that a value of (a) defined in the equation below is in the range of 1.1 to 1.8, a value of (b) is in the range of 8.5 to 11.8, a value of (c) is 20.2 or less, and a value of (d) is 10.0 or less