Carbon steel powders and method of manufacturing powder...

B - Operations – Transporting – 22 – F

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B22F 1/00 (2006.01) B22F 3/16 (2006.01)

Patent

CA 2268581

Fine powders of iron with less than 5% by weight graphite, copper, and an organic binder can be formed into shapes having a green density of up to about 7.4 g/cc and sintered in a hydrogen containing atmosphere to yield parts having minimum variations in physical properties. Incorporation of small quantities of copper, e.g. 1 % or less by weight, negates variations in physical properties of sintered parts that were subjected to variations in the hydrogen content of the sintering atmosphere.

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