Claims
- 1. A normalized, rolled and welded tubular product having a wall thickness of about 3/8 inch or more formed of an aluminum-killed steel consisting essentially of from 0.28 to 0.40% carbon, from 1.00 to 1.75% manganese, from 0.15 to 0.50% silicon, from 0.20 to 1.00% chromium, and the balance iron, said steel being further characterized by a yield strength of about 55 to 80 ksi and a minimum ultimate tensile strength of about 95 ksi.
- 2. A normalized, rolled and welded tubular product having a maximum wall thickness of about 3/8 inch formed of an aluminum-killed steel consisting essentially of from 0.20 to 0.40% carbon, from 1.00 to 1.75% manganese, from 0.15 to 0.50% silicon, from 0.20 to 1.00% chromium, and the balance iron, said steel being further characterized by a minimum ultimate tensile strength of about 95 ksi and a yield strength of from about 55 to 80 ksi.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of application Ser. No. 868,261, entitled "Welded Alloy Casing" filed Jan. 9, 1978 and now U.S. Pat. No. 4,189,333.
US Referenced Citations (18)
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
868261 |
Jan 1978 |
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