Metal treatment – Stock – Ferrous
Patent
1992-05-27
1993-06-08
Yee, Deborah
Metal treatment
Stock
Ferrous
420 41, C22C 3850
Patent
active
052175456
ABSTRACT:
A material for electric heater element sheathing, which has good weldability, is oxidation- and corrosion-resistant, and forms an eye-pleasing dark gray or black surface oxide, consists essentially of, by weight, from about 8.75-15.5% nickel, about 19.5-21.0% chromium, about 0.30-0.50 manganese, about 0.50-2.0% silicon, about 0.25-0.60% aluminum, about 0.25-1.0% titanium, up to about 0.05% carbon, up to about 0.005% sulfur, up to about 0.75% copper, up to about 1.0% cobalt, up to about 1.0% molybdenum, up to about 0.02% phosphorus, about 0.001-0.015% calcium plus magnesium and remainder essentially iron, wherein the Ferrite Number is between 1 and 15.
REFERENCES:
patent: 3362813 (1968-01-01), Ziolkowski
patent: 3729308 (1973-04-01), Eiselstein et al.
patent: 5087414 (1992-02-01), Maniar
Metals Handbook Ninth Edition, Volume 3, Properties and Selection: Stainless Steels, Tool Materials and Special-Purpose Metals, ASM, pp. 5, 9, Dec. 1980.
Sievart et al., "Ferrite Number Predicion to 100 FN in Stainless Steel Weld Metal", American Welding Society Publication, Welding Research Supplement, pp. 289-s to 298-s, Dec. 1988.
O'Donnell David B.
Smith Gaylord D.
Wendler Walter H.
INCO Alloys International, Inc.
Londo Bruce S.
Steen Edward A.
Yee Deborah
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