Iron-chromium-nickel heat resistant alloys

Details Iron-chromium-nickel heat resistant alloys Iron-chromium-nickel heat resistant alloys

1988-04-11

1989-08-29

Yee, Deborah

Alloys or metallic compositions

Ferrous

Nine percent or more chromium containing

420 47, 420453, 420586, C22C 3844, C22C 3000

Patent

active

048615471

ABSTRACT:
Modified ACI-type alloys having creep rupture strengths higher than such alloys which retain the resistance to hot tearing or cracking during casting or welding as is associated with the standard ACI alloy counterparts of such modified alloys. The modified alloys consist of about 8% and about 62% by weight nickel, between about 12% and about 32% by weight chromium, between about 0.05% and about 1.5% by weight molybdenum, less than about 1% tungsten, between about 0.05% and about 1% by weight columbium (niobium), up to about 3% by weight silicon, up to about 3% by weight manganese, up to about 0.8% by weight carbon, up to about 0.5% by weight nitrogen, and the balance essentially iron.

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patent: 2703277 (1955-03-01), Spendelow et al.
patent: 3127265 (1964-03-01), Avery
patent: 3164465 (1965-01-01), Thielemann
patent: 3607250 (1971-09-01), English et al.
patent: 3758299 (1973-09-01), Ennis et al.
patent: 4077801 (1978-03-01), Heyer et al.

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