Beijing Hownew Energy Technology Group Co., Ltd vincent@hownewenergy.com 86-10-53681027
Incoloy 800 is an Fe-Ni-Cr based solid solution strengthened, deformable high-temperature corrosion-resistant alloy used under 1000°C. It exhibits excellent high-temperature corrosion resistance and good fabricability. The alloy has good structural stability, and it is easy to form both in cold and hot working conditions, making it suitable for components that require long service life at high temperatures under severe corrosive conditions.
The chromium content in Incoloy 800 typically ranges from 15-25%, while the nickel content is between 30-45%, with small amounts of aluminum and titanium included. After rapid cooling from high temperatures, the alloy remains in a single austenitic phase, meaning its operational state is of a singular austenitic structure. The alloy’s high chromium content and sufficient nickel provide it with excellent high-temperature corrosion resistance, making it widely applied in industry. It exhibits excellent resistance to stress corrosion cracking in environments containing chlorides, dilute NaOH solutions, and in high-temperature, high-pressure water, thus it is used in manufacturing equipment resistant to stress corrosion cracking.
Corresponding Grade
| American UNS、ASTM | No8800、N08800 | Incoloy800 |
| German DIN and EN | 1.4876 | M10NiCrAlTi32-20 |
| China standard high-temperature grade | GH1180 | |
| China standard corrosion-resistant grade | NS111 | 0Cr20Ni32Fe |
chemical composition
| % | C | Si | Mn | Cr | Ni | Al | Ti | Cu | F | S | Fe |
| Min | — | — | 19 | 30 | 0.15 | 0.15 | — | 一 | 0.15 | ||
| Max | 0.1 | 1 | 1.5 | 23 | 35 | 0.6 | 0.6 | 0.75 | 0.03 | 0.015 | Balance |
Application area
Chemical industry nuclear generator nitric acid cooler, acetic anhydride cracking tube heat exchange equipment, heat exchange tube
