Case-hardening alloy steel and case-hardened article made theref

Details Case-hardening alloy steel and case-hardened article made theref Case-hardening alloy steel and case-hardened article made theref

1978-08-18

1979-06-05

Steiner, Arthur J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75125, 75128E, 75128G, 75128Z, 75128T, 75128V, 75128W, 148 315, 148 36, C22C 3842, C22C 3844

Patent

active

041572580

ABSTRACT:
A carburizing alloy steel and case-hardened articles made therefrom, having high core impact strength and fracture toughness combined with high case hot hardness and temper resistance at 400.degree. F. (204.degree. C.), containing 0.06-0.16% carbon, 0.2-0.7% manganese, 0.5-1.5% silicon, 0.5-1.5% chromium, 1.5-3% nickel, 1-4% copper, 2.5-4% molybdenum, up to 0.4% vanadium, and the balance iron and incidental impurities. The alloy may also contain small amounts of phosphorus, sulfur, nitrogen, aluminum, columbium, titanium, zirconium, and calcium.

REFERENCES:
patent: 3036912 (1962-05-01), Roberts et al.
patent: 3661565 (1972-05-01), Harvey
patent: 3713905 (1973-01-01), Philip et al.

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