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Hastelloy X

Specs: AMS 5754, MIL-I-45208A

UNS# N06002

Hastelloy X is a Nickel-based alloy containing 47.5% Nickel, 22% Chromium, and 18.5% Iron, with small amounts of Cobalt, Molybdenum and Tungsten.

This corrosion and heat-resistant alloy is typically used for such parts as turbine rotors, shafts, flanges, blades, and bolts, requiring oxidation resistance up to 2200°F and relatively high strength about 1500°F.

Hastelloy X’s primary function is to endure effectively under high-temperature, high-stress applications in a moderately to severely corrosive, and/or erosion-prone environment where more common and less expensive iron-based alloys would fail. Although it is a superalloy, Hastelloy X does experience degradation due to fabricating and handling. Electropolishing or passivation of Hastelloy X can improve corrosion resistance.

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