56 Welding

IC-221LA is the recommended weld wire for cast repair of Ni3Al-based alloys in applications to 800°C (1472°F). Above 800°C (1472°F), use IC-221 W. This latter wire is also useful for weld overlay deposits on steels, stainless steel, and other nickel-based alloys. Stoody Company and Polymet Corporation (Cincinnati, Ohio) produce weld wire (Fig. 5.12).

TABLE 5.2 Chemical Requirements Specified under A1002-99 for Castings of Ni3Al-Based Alloy

Element

Composition (wt%)

Ca

0 0

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