Fe-base sintered alloy for valve seats for use in internal combu

Details Fe-base sintered alloy for valve seats for use in internal combu Fe-base sintered alloy for valve seats for use in internal combu

1991-06-18

1993-06-22

Walsh, Donald P.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75243, 419 11, 419 38, 419 53, 419 55, C22C 3800, C22C 3302

Patent

active

052213218

ABSTRACT:
A Fe-base sintered alloy for a valve seat for use in internal combustion engines, which constitutes a chemical composition of 0.4 to 2% of C, 0.5 to 5% of Cr, 5 to 15% of Mo, 0.2 to 2% of Ni, 0.4 to 2% of Co, 8 to 20% of Cu, 0.01 to 0.5% of S, and the balance Fe, wherein percentages are by weight. The Fe-base sintered alloy possesses high strength and high rigidity, and hence exhibits excellent abrasive and corrosion wear resistance properties, as well as excellent lubricity.

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