Description Incoloy 800HT has superior corrosion resistance in oxidizing corrosive environments such as nitric acid and nitric acid-sulfuric acid. They perform similarly well in sodium salt and other molten salt environments, and provide stress corrosion crack sensitivity surpassing standard austenitic stainless steels. Alloy 800HT are widely used in chemical plants, heat treatment furnaces and other high-temperature environments. Incoloy 800HT Specification Grade UNS W.Nr Alloy 800HT N08811 1.4959 Incoloy 800HT Chemical composition Grade % Ni Cr Fe C Mn Si Cu S Al Ti Alloy 800HT Min 30 19 Bal. 0.06 0.25 0.25 Max 35 23 0.10 1.5 1 0.75 0.015 0.60 0.60 Incoloy 800HT Mechanical properties：(Minimum value at 20℃) Tensile Strength σb/MPa Yield Strength σp0.2/MPa Elongation σ5/% ≥500 ≥210 ≥35 Incoloy 800HT Standard Bar Forging Sheet/Strip Wire Pipe ASTM B408 ASTM B564 ASTM B409 ASTM B408 ASTM B407 ASTM B514 Incoloy 800HT Size Range 1、Wire: Dia 0.08-12mm 2、Bar: Dia1.0-300mm 3、Strip(Coil): 0.2-20mm TCK x 10-300mm W 4、Sheet: min.0.7mm TCK x 1200mm W max. 5、Tube & Forging & Machine Parts: customized 6、Welding wire: 0.8mm,1.0mm,1.2mm,2.0mm,2.4mm,3.2mm,3.8mm,4.0mm etc 7、Welding Strip: 0.4-0.7mm TCK x 25-60mm W Features: Incoloy 800H has a restricted carbon content range of 0.05 to 0.10%, which is in the upper portion of that of Incoloy 800, and is annealed at 1149 to 1177℃ (Incoloy 800 is annealed at 983 to 1038℃). These differences impart it to have higher stress rupture and creep properties than Incoloy 800. Applications: Chemical and petrochemical process piping, high temperature heat exchangers, furnace components, carburizing equipment, heating-element sheathing, and nuclear power steam superheating tubing.