STEEL FOR WELD WIRE Russian patent published in 1996 - IPC

FIELD: arc welding. SUBSTANCE: steel contains (in wt %): 0.01-0.1 carbon, 0.5-2 manganese, 0.1-0.5 silicium, 0.01-2 chromium, 0.01-0.4 nickel, 0.01-0.4 copper, 0.001- 0.05 aluminium, 0.3-1.5 molybdenum, 0.001-0.1 tungsten, iron - the rest. Such a composition meets the requirements for the weld wire, use of which prevents formation of big carbide aggregates on the borders of grains over the period of cooling the weld metal after welding, provides release of the fine-disperse particles of carbide-nitrides with oxides inside the grains at subcritical temperatures during the cooling, and increases the weld stability toward formation of cold cracks. EFFECT: increased operation stability of welded constructions. 1 tbl