Tubular products and methods of making the same

Details Tubular products and methods of making the same Tubular products and methods of making the same

1977-04-11

1978-07-11

Andrews, M. J.

Metal treatment

Compositions

Heat treating

148 4, 148 32, C21D 914

Patent

active

040999920

ABSTRACT:
Tubular metal products and methods of making tubular metal products for use in sour gas wells, which are characterized by resistance to hydrogen sulfide embrittlement at temperatures up to about 600.degree. F., are provided based upon an alloy having the composition up to about 0.035% maximum carbon, up to about 0.15% maximum silicon, up to about 0.15% maximum manganese, up to about 0.010% maximum sulfur, up to about 0.015% maximum phosphorus, about 19.0% to about 21.0% chromium, about 33.0% up to about 37.0% nickel, about 9.0% to about 10.5% molybdenum, up to about 1.0% titanium, up to about 0.015% boron, up to about 2% iron and the balance cobalt, said tubular product having been heat treated in the range 1350.degree. F. to 1500.degree. F. after cold working up to about 75%.

REFERENCES:
patent: 4026583 (1977-05-01), Gottlieb

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