Ametek, Specialty Metal Products Division

John H Reinshagen

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.

Process for improving the corrosion resistance of stainless steel powder

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.

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North Huntindton, PA, United States of America

John H Reinshagen