Abstract: The present invention related to a process for improving the corrosion resistance and processability of stainless steel powder composition. The process comprises prealloying the stainless steel powder with about 1% to about 3% by weight of tin and blending the prealloyed stainless steel powder before molding with from about 0.5% to about 1.5% of an additive in particulate form consisting essentially of by weight 2 to 30% of tin and the balance consisting essentially of at least one element selected from copper and nickel.

Abstract: The present invention relates to a modified stainless steel powder composition from which moldings can be formed. The modified stainless steel powder composition comprises from about 1% to about 3% by weight of tin, from about 0.5% to about 1.5% by weight of an additive consisting essentially of from about 2% to about 30% by weight tin and the balance consisting essentially of at least one element selected from copper and nickel, and the balance essentially a stainless steel powder. A process for forming the modified stainless steel powder composition is also described.

Abstract: Discrete copper-nickel-tin spinodal alloy articles, such as bearings, containing from about 5 to about 35 wt. % nickel, from about 4 to about 13 wt. % tin and the balance copper are produced by processing a prealloyed alloy powder to form a green body having substantially the desired shape of, and proportionally sized to, the final article and sintering the green body in a reducing atmosphere or a vacuum at a temperature of at least 1650.degree. F. for sufficient time to achieve at least 90% of the theoretical density. The green body may be formed by either compaction or injection molding of the prealloyed powder. The resulting sintered article may be age hardened to effect a spinodal decomposition of the copper-nickel-tin alloy. The age hardened articles exhibit excellent strength properties and homogeneity while retaining significant ductility.

Abstract: Corrosion resistance of stainless steel powder moldings is improved by combining the powder before molding with about 8 to 16% by weight of an additive consisting essentially of about 2 to 30% by weight of tin and 98 to 70% by weight of copper and/or nickel. Stainless steel moldings are prepared by compacting the powder at high pressure and heating to sintering temperature.

Abstract: A process for producing a flush edge protected laminate of an inner sheet of a corrodable metal sandwiched between outer sheets of a protective metal which comprises attaching a C-shaped channel of the protective metal over the edge to be protected and rolling the laminate with the attached channel so that the channel is deformed to form a protective edge whose overlapping sides are flush with the upper and lower surfaces of the laminate; and a protected edge bi-metallic laminate prepared by the process.