Method and wire for submerged arc welding of pipe

Details Method and wire for submerged arc welding of pipe Method and wire for submerged arc welding of pipe

C - Chemistry, Metallurgy

22

C

75/119, 327/41,

C22C 38/04 (2006.01) B23K 35/30 (2006.01) B23K 35/36 (2006.01)

Patent

CA 1127880

ABSTRACT OF THE DISCLOSURE A combination of welding wire and welding flux for submerged arc welding of high strength low alloy pipe which require low temperature impact properties of at least 30 ft./ lb. at -13°F. The wire consists essentially of 2.0 to 3.5 wt.% manganese; 0.01 wt.% to 1.5 wt.% silicon; .05 to 0.15 wt.% carbon; balance iron with the proviso that when manganese is greater than 2.5 up to 3.5 wt.% the silicon content is between 0.01 wt.% to 1.5 wt.% and when the manganese content is between 2.0 to 2.5 wt.% the silicon content is greater than .3 wt.% up to 1.5 wt.%. The flux used with these wires is preferably acidic in nature.

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