Metrode Nimax-C description: The weld deposit composition matches cast alloy C with Ni-15%Cr-16%Mo-4%W-5%Fe. Wrought forms of this alloy (C276) have low C and Si, see data sheet D-30. Cast versions of the alloy typically have higher carbon and silicon (like the original wrought alloy C which is now obsolete) but repair welds are usually solution treated for optimum corrosion resistance. A controlled level of carbon raises strength and response to work-hardening. These properties extend to elevated temperatures, and with good resistance to impact and thermal fatigue the weld metal finds extensive use for surfacing or build-up of hot-work forging dies, especially where large volumes of weld metal must be deposited economically.