Ferritic stainless steel

Details Ferritic stainless steel Ferritic stainless steel

1979-06-28

1981-03-10

Lewis, Michael L.

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

75124, 75128N, 75128G, 75128T, 75128W, C22C 3806, B32B 1518

Patent

active

042554977

ABSTRACT:
A ferritic stainless steel having improved impact properties contains between about 21% and about 30% chromium, up to about 5% molybdenum, up to about 6% nickel, between about 0.1% and about 0.4% niobium, between about 0.1% and about 0.75% aluminum, up to about 0.3% titanium, up to about 0.025% carbon, up to about 0.035% nitrogen, and the balance essentially iron and incidental impurities. The ferritic stainless steels of the present invention are particularly useful in welded structures because the weld metal displays superior impact properties.

REFERENCES:
patent: 3957544 (1976-05-01), Pinnow et al.
patent: 3992198 (1976-11-01), Demo, Jr.
patent: 4119765 (1978-10-01), Pinnow et al.
patent: 4155752 (1979-05-01), Oppenheim
Smechyshen, M. et al., "Effects of Composition on Ductility and Toughness of Ferritic Stainless Steels," Toward Improved Ductility and Toughness, Kyoto International Conference Hall, pp. 235-250, Climax Molybdenum Development Co., Tokyo, Japan (1971).

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