Patent ID: 7967927
Filing Date: 2011-06-28
Classification: B22F,C21D,C22C

Abstract:
1. A method of producing a structural, stainless steel alloy comprising the steps of: (a) combining a mixture in weight percent in a melt of about 0.15 to 0.30% carbon (C), about 8 to 17% cobalt (Co), about 2.0 to 10.0% nickel (Ni), about 8.0 to 11.0% chromium (Cr), about 1.0 to 3.0% molybdenum (Mo), less than about 0.8% vanadium (V), and less than about 3% tungsten (W), the balance essentially iron (Fe) and incidental elements and impurities; and (b) processing said melt mixture to form an article of manufacture characterized in that the alloy has a predominantly lath martensite microstructure essentially without topologically close packed intermetallic phases and said carbon (C) is in predominantly a dispersion of nanoscale, M