WELDING WIRE FOR AUTOMATIC WELDING OF HEAT-RESISTANCE PEARLITIC STEELS Russian patent published in 2012 - IPC B23K35/30 C22C38/54 

FIELD: process engineering.

SUBSTANCE: invention relates to metallurgy, in particular, to production of welding materials and may be used in automatic welding of heat-resistant pearlitic steels in power generating equipment production. Proposed wire is made from alloy that comprises the following components, in wt %: carbon - 0.07-0.11, silicon - 0.15-0.25, manganese - 0.8-1.0, chromium - 1.6-1.9, nickel - 0.6-0.8, molybdenum - 0.5-0.7, titanium - 0.05-0.11, niobium - 0.001-0.01, copper - not over 0.06, aluminium - not over 0.02, vanadium - not over 0.03, tin - not over 0.001, stibium - not over 0.005, arsenium - 0.005, cobalt - 0.02, nitrogen - not over 0.015, sulfur - not over 0.006, phosphorus - not over 0.006, and iron makes the rest. Embrittlement criterion at irradiation Q does not exceed 0.85 wherein Q=(Ni+Co)²+1.5Cu+0.2Mn+P+0.25(Sb+Sn).

EFFECT: higher radiation resistance of weld seam metal, high mechanical properties.

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