Patent ID: 6238455
Filing Date: 2001-05-29
Classification: B22F,C21D,C22C

Abstract:
A consolidated, powder-metallurgy article comprising a precipitation-hardenable stainless steel alloy consisting essentially of, in weight percent, aboutCarbon 0.03 max. Manganese 1.0 max. Silicon 0.75 max. Phosphorus 0.040 max. Sulfur 0.010-0.050 Chromium 10-14 Nickel 6-12 Molybdenum 6 max. Copper 4 max. Titanium 0.4-2.5 Aluminum 1 max. Niobium 1 max. Tantalum 2.5 max. Cobalt 9 max. Boron 0.010 max. Nitrogen 0.03 max.and the balance essentially iron and the usual impurities, said powder-metallurgy article containing a fine dispersion of minute sulfide particles that are not greater than 5 .mu.m in major dimension.