Metal treatment – Compositions – Heat treating
Patent
1984-03-26
1985-08-06
Skiff, Peter K.
Metal treatment
Compositions
Heat treating
C22C 3812
Patent
active
045334056
ABSTRACT:
An article of manufacture is provided comprising a heat treated high strength low-alloy steel tubular product of the L-80 and N-80 type suitable for use as an oil well tubular member. The composition consists essentially of about 0.1 to 0.4% C, about 0.075 to 0.4% Mo, about 0.002 to 0.03% N, about 0.75 to 1.5% Mn, about 0.1 to 0.4% Si, and the balance essentially iron, the carbon and molybdenum contents being controlled and correlated such that for a carbon content ranging from about 0.1 to 0.25%, the molybdenum content ranges from about 0.075 to 0.25%; and for a carbon content ranging from about 0.25 to 0.4%, the molybdenum content ranges from about 0.2 to 0.4%.
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Iron Age, "Materials Come First in Sour Gas Drilling", Nov. 12, 1980, pp. 1-6.
Hamre et al., "Properties of Acicular-Ferrite Steel for Large Diameter Line Pipe", MicroAlloying 75, Session 2B, Wash., D.C., Oct. 1975, pp. 21-27.
Sponseller David L.
Straatmann John A.
Amax Inc.
Ciomek Michael A.
Kalil Eugene J.
Skiff Peter K.
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