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  • Incoloy 800H Sheet/bar/pipe
  • Incoloy 800H Sheet/bar/pipe

Incoloy 800H Sheet/bar/pipe

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Specification, Chemical & Mechanical Performance

Equivalent designations
UNS N08810
DIN W. Nr. 1.4958
Form ASTM
Rod and bar B 408
Plate, sheet and strip A 240, A 480, B 409, B 906
Seamless pipe and tube B 407, B 829
Welded pipe B 514, B 775
Welded tube B 515, B 751
Welding fitting B 366
Forging B 564


Chemical composition

% Fe Ni Cr C Mn Si S Cu Al Ti
min 39.5 30.0 19.0 0.05         0.15 0.15
max   35.0 23.0 0.10 1.50 1.00 0.015 0.75 0.60 0.60


Physical properties

Density 7.94 g/cm3
Melting range 1357-1385℃


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.

Note: Incoloy is a registered trademark of the Special Metals Corporation group of companies.

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