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
| UNS | W.Nr |
| N08810 | 1.4958 |
Incoloy 800H Chemical composition
| Grade | % | Ni | Cr | Fe | C | Mn | Si | Cu | S | Al | Ti | P |
| 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 |
