The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
May. 10, 1988

Filed:

Sep. 24, 1986
Applicant:
Inventors:

John J Fischer, Huntington, WV (US);

Gaylord D Smith, Huntington, WV (US);

Assignee:

Inco Alloys International, Inc., Huntington, WV (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C22C / ; C22C / ;
U.S. Cl.
CPC ...
148442 ; 148409 ; 148327 ; 420584 ; 420585 ; 420586 ; 138D / ;
Abstract

An iron-nickel-chromium-aluminum alloy containing about 30 to 40% nickel, about 15 to less than 19% chromium, about 2 to 4% aluminum, carbon in an amount of at least 0.05% and up to 0.2%, about 0.2 to 0.8% titanium, from 1.5 to 4% molybdenum, up to 0.1% boron, up to 0.5% zirconium, up to about 5% cobalt and the balance iron. Alloy is characterized by (i) carburization resistance and (ii) stress-rupture strength which is desirable for ethylene pyrolysis tubing, (iii) highly oxidation resistant, (iv) cold workable such that mill product forms can be readily produced without deleterious cracking, (vi) ductile, (vii) structurally stable, i.e., will resist forming detrimental quantities of undesirable phases such as sigma, and (viii) weldable.


Find Patent Forward Citations

Fischer, John. (1988). Carburization/oxidation resistant worked alloy (U.S. Patent No. 4743318). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4743318

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