Metrode Supermet-253MA description: Designed to match equivalent alloys with good hot strength coupled with excellent resistance to oxidation up to about 1100°C. Resistance to sulphidation under oxidising conditions is superior to many higher nickel heat-resistant alloys. Resistance to nitriding and carburisation is satisfactory except under reducing conditions where higher nickel alloys are superior. Also satisfactory for dissimilar combinations of materials with related levels of alloying. However, control of hot cracking in this high silicon weld metal is dependent on some ferrite being present during solidification.