Method and alloy for introducing machinability increasing ingred

Details Method and alloy for introducing machinability increasing ingred Method and alloy for introducing machinability increasing ingred

1979-08-29

1981-01-13

Rosenberg, P. D.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75 58, 75134B, 75166R, 75166B, C22C 3300

Patent

active

042447372

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.degree. C. (752.degree. F.).

REFERENCES:
patent: 1584922 (1926-05-01), Geppert
patent: 3301642 (1967-01-01), Youssef
patent: 3784374 (1974-01-01), Almand
patent: 3933480 (1976-01-01), Tipnis

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