Metal treatment – Compositions – Heat treating
Patent
1987-07-08
1989-05-23
Yee, Deborah
Metal treatment
Compositions
Heat treating
148 12F, C21B 806
Patent
active
048327573
ABSTRACT:
An article of manufacture is provided in the form of a sucker rod for use in sucker rod pumps. The sucker rod is formed of a medium carbon manganese-molybdenum steel consisting essentially of about 0.25% to 0.45% carbon, about 1.2% to 1.8% manganese, about 0.20% to 0.55% molybdenum, up to about 0.03% niobium, and the balance essentially iron, the sucker rod being in the normalized condition and being characterized by a yield to tensile ratio in excess of about 0.572, a tensile strength of at least about 115 ksi, and by a microstructure consisting essentially of acicular ferrite, fine pearlite and bainite.
REFERENCES:
patent: 4486449 (1984-12-01), Woodings
Cox Thomas B.
Garber Richard I.
Amax Inc.
Ciomek Michael A.
Kalil Eugene J.
Yee Deborah
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