| 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.
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