Weldable steel excellent in the toughness of the bond in a singl

Details Weldable steel excellent in the toughness of the bond in a singl Weldable steel excellent in the toughness of the bond in a singl

1975-05-30

1977-05-24

Stallard, W.

Metal treatment

Compositions

Heat treating

75123B, 75123E, C22C 3802

Patent

active

040253686

ABSTRACT:
A weldable steel excellent in the toughness of the bond in a single layer welding with a large heat-input more than 60,000 J/cm, which contains 0.03 to 0.22% of carbon, 0.02 to 0.80% of silicon and 0.40 to 2.00% of manganese in coexistance of 0.005 to 0.1% of rare earth metal and 0.0005 to 0.01% of boron, the remainder being substantially iron. Said weldable steel can be further improved by containing at least one of not more than 0.1% of niobium, not more than 0.1% of vanadium, not more than 0.5% of copper, not more than 1.0% of nickel, not more than 0.8% of chromium, not more than 0.5% of molybdenum, not more than 0.1% of selenium, not more than 0.1% of aluminum, not more than 0.1% of titanium and not more than 0.1% of zirconium.

REFERENCES:
patent: 2360717 (1944-10-01), Phelps
patent: 2686115 (1954-08-01), Clark
patent: 2861908 (1958-11-01), Mickelson et al.
patent: 2970903 (1961-02-01), Mickelson et al.
patent: 3664830 (1972-05-01), Kambayashi
patent: 3773500 (1973-11-01), Kanazawa et al.

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