Type HH is an iron-chromium-nickel casting alloy having high heat, oxidation and corrosion resistance. It is recommended for furnace parts, salt pots, grate bars, belt conveyors and other parts operating up to 21008 F in intermittent service. It may be supplied in partially ferritic Type I or in wholly austenitic Type II depending on the applications and service requirements. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness and creep. It also includes information on high temperature performance and corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: SS-221. Producer or source: Stainless steel mills.

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