Patent ID: 6123748
Filing Date: 2000-09-26
Classification: C22C

Abstract:
An iron-based powder for use in manufacturing a component by a powder metallurgy route, which powder is a mixture includinga first alloy powder consisting of, in weight percentages, 14 to 30 chromium; 1 to 5 molybdenum; 0 to 5 vanadium; 0 to 6 tungsten; the total of molybdenum, vanadium and tungsten being at least 3; a total of 0 to 5 of other strong carbide forming elements; 0 to 1.5 silicon; 0.555 to 2 carbon, with a minimum amount sufficient to form carbides with substantially all of the molybdenum, vanadium, tungsten, and any other strong carbide forming elements present; and the balance is iron together with incidental impurities;a second alloy powder of an austenitic stainless steel;wherein the iron-based powder also includes a finite amount of a solid lubricant up to 30% by weight thereof; and wherein, by weight, the major portion of the combination of the first alloy powder and the second alloy powder comprises the first alloy powder, with the second alloy powder comprising the minor portion of this combination.