description Incoloy 800H has excellent corrosion resistance in the water media at extremely high temperature of 500℃. Its higher nickel content made it have good stress corrosion resistance cracking properties in the water corrosion condition. High chromium content made it better resistance to pitting and crevice corrosion cracking. This alloy can resist nitric acid and organic acid, but it is not so fine in the sulfuric acid and hydrochloric acid. Incoloy 800H Specification Grade UNS W.Nr Alloy 800H N08810 1.4958 Incoloy 800H Chemical composition Grade % Ni Cr Fe C Mn Si Cu S Al Ti P Alloy 800H Min 30 19 Bal, 0.05 0.15 0.15 Max 35 23 0.10 1.5 1 0.75 0.015 0.60 0.60 0.03 Incoloy 800H Mechanical properties：(Minimum value at 20℃) Tensile Strength σb/MPa Yield Strength σp0.2/MPa Elongation σ5/% ≥450 ≥180 ≥35 Incoloy 800H Standard Bar Forging Sheet/Strip Wire Pipe ASTM B408 ASTM B564 ASTM B409 ASTM B408 ASTM B407 ASTM B514 Incoloy 800H 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.