Method and alloy for introducing machinability increasing...

C - Chemistry – Metallurgy – 22 – C

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75/14, 53/49

C22C 1/00 (2006.01) C22C 30/04 (2006.01) C22C 33/00 (2006.01)

Patent

CA 1119844

ABSTRACT Lead bismuth and tellurium and/or sulfur are added to steel, to increase the machinability of the steel, in an addition alloy consisting essentially of 5-40 parts lead, 5-40 parts bismuth, up to 6 parts tellurium and up to 25 parts sulfur. The alloy contains at least one of the group tellurium and sulfur, and the alloy has a melting point of at least about 400°C (752°F).

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