WELDING WIRE Russian patent published in 2014 - IPC B23K35/30 C22C38/52 

FIELD: metallurgy.

SUBSTANCE: invention refers to welding filler wires for gas-shielded argon-arc welding with a non-consumable electrode of heat-resistant alloy steels for equipment and pipelines of NPP working at action of a steam-water mixture and ionising emission. Welding wire contains the following component ratio, wt %: carbon 0.08-0.12, manganese 1.35-1.65, silicon 0.45-0.7, vanadium ≤0.02, nitrogen ≤0.01, aluminium ≤0.02, titanium ≤0.02, nickel 1.5-1.8, niobium ≤0.02, molybdenum 0.50-0.70, chrome 0.005-0.3, cobalt 0.005-0.02, copper 0.005-0.06, arsenic 0.001-0.02, sulphur 0.001-0.01, phosphorus 0.001-0.01, stannum 0.001-0.005, antimony 0.001-0.005, and iron is the rest.

EFFECT: decreasing critical weld metal brittleness temperature; improving cyclic strength and crack resistance of a weld joint under radiation effect conditions.

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