Ferritic alloys of low flow stress for P/M forgings
AssigneeThe International Nickel Company, Inc.
InventorStephen James Donachie
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Abstract
Ferritic age-hardenable alloy steels containing correlated percentages of nickel, copper, molybdenum, carbon, etc. in powder form are characterized by low flow stress, thus rendering them particularly suitable for P/M hot forging.
Claims6
A consolidated age-hardenable powder metallurgical alloy steel in the ferritic condition particularly adapted for PM/hot forging and characterized by (a) low flow stress, (b) good impact strength, (c) high resistance to fatigue and (d) good flowability such as to fill complex dies, said steel being formed from about 0.7% to about 1% nickel, 1.4% to 2% copper, 0.15% to 0.35% molybdenum, up to 0.02% carbon, up to 0.1% silicon, up to 0.15% manganese, and the balance essentially iron.
A consolidated age-hardenable powder metallurgical steel in the ferritic condition particularly adapted for PM/hot forging, said steel having from 0.7 to 1.25% nickel, from 0.75% to 2.25% copper, from 0.1 to 0.4% molybdenum, up to 0.2% silicon, up to 0.2% manganese, up to 0.03% carbon and the balance essentially iron.
Dependencies are inferred from the claim text.