Machinable copper alloys having reduced lead content

Details Machinable copper alloys having reduced lead content Machinable copper alloys having reduced lead content

1991-03-01

1992-08-11

Roy, Upendra

Alloys or metallic compositions

Copper base

Zinc containing

148434, 420499, 420500, 420521, C22C 900

Patent

active

051376857

ABSTRACT:
Machinable copper alloys having a reduced lead concentration are disclosed. An additive to the alloy accumulates both at the grain boundaries and intragranularly. The additive facilitates chip fracture or lubricates the tool. One additive is a mixture of bismuth and lead with the lead concentration below about 2% by weight.

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