Sintered alloy for valve seat

Details Sintered alloy for valve seat Sintered alloy for valve seat

1983-07-28

1985-03-19

Sebastian, Leland A.

Stock material or miscellaneous articles

All metal or with adjacent metals

Having metal particles

75243, 75246, 251359, 419 27, 428567, B22F 326, B22F 500

Patent

active

045059888

ABSTRACT:
A sintered alloy for a valve seat comprising, in weight percent, 0.5 to 1.7% C, 0.5 to 2.5% Ni, 3.0 to 8.0% Cr, 0.1 to 0.9% Mo, 1.0 to 3.8% W and 4.5 to 8.5% Co, the balance being substantially Fe provided by a base atomized powder; said alloy containing 8 to 14% by volume of 250 mesh or less C-Cr-W-Co-Fe and Fe-Mo hard grains and 6 to 13% by volume of cells, with the continuous cells being infiltrated by a copper alloy.

REFERENCES:
patent: 4123265 (1978-10-01), Takahashi et al.
patent: 4363662 (1982-12-01), Takahashi et al.
patent: 4424953 (1984-01-01), Takagi et al.

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