General characteristics
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. No preheat required, it is desirable to keep interpass below 150°C. Applications include furnaces and furnace parts, high temperature flues, exhaust and heat recuperator systems, combustion nozzles.

Products of the line 253MA

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