WELDING MATERIAL FOR LOW COEFFICIENT OF THERMAL EXPANSION ALLOYS

摘要

The invention provides a welding material for welding iron containing low CTE alloys. The welding material contains 10-80% nickel, 0-80% cobalt, 0.05-0.5% carbon, 0.5-5% niobium less than about 1% silicon and balance iron with incidental impurities. The welding material also is operable with fluxes for submerged arc welding. In addition, the welding material may be configured to function as a flux coated or flux-cored electrode.