WELDING WIRE FOR AUTOMATIC WELDING OF HEAT-RESISTANCE PEARLITIC STEELS Russian patent published in 2014 - IPC B23K35/30 C22C38/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to production of welding materials and can be used for automatic welding of heat-resistant steels of 2.25Cr-1Mo-0.25V composition at production of structures in chemical and petrochemical machine building. Proposed composition contains the following substances, in wt %: carbon 0.12-0.16, silicon 0.15-0.22, manganese 0.70-0.90, chromium 2.1-2.5, nickel 0.01-0.20, molybdenum 0.90-1.50, titanium 0.05-0.10, vanadium 0.15-0.25, aluminium 0.005-0.020, copper 0.01-0.06, niobium 0.001-0.05, boron 0.0001-0.005, tin 0.0001-0.001, stibium 0.001-0.005, arsenic 0.001-0.010, cobalt 0.005-0.020, nitrogen 0.003-0.015, sulphur 0.001-0.006, phosphorus 0.001-0.006, lead 0.001-0.010, bismuth 0.0001-0.0010, iron making the rest.

EFFECT: higher tensile strength of weld metal, higher duration at operating temperatures.

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