Stainless Steel Sheet 800H Incoloy 800H NO8810 SS Sheet Metal
Stainless Steel Sheet 800H Incoloy 800H NO8810 SS Sheet Metal
800H Stainless Steel Sheet General Properties:
Alloy 800H has good creep-rupture properties at temperatures above 1100°F (600°C). It remains ductile during long term use at temperatures below 1290°F (700°C) due to a maximum titanium and aluminum content of 0.7%. Alloy 800 with a standard anneal is recommended for service below 1100°F (600°C). Alloy 800H resists reducing, oxidizing and nitriding atmospheres, as well as, atmospheres that alternate between reducing and oxidizing. The alloy remains stable in long term high temperature service.
800H Stainless Steel Sheet Chemical Analysis:
Weight % (all values are maximum unless a range is otherwise indicated)
| Element | 800H |
| Nickel | 30.0 min.-35.0 max. |
| Chromium | 19.0 min.-23.0 max. |
| Iron | 39.5 |
| Carbon | 0.05 min.-0.10 max. |
| Manganese | 1.50 |
| Phosphorus | 0.045 |
| Sulfur | 0.015 |
| Silicon | 1.0 |
| Aluminum | 0.15 min.-0.60 max. |
| Titanium | 0.15 min.-0.60 max. |
| Aluminum & Titanium | 0.30 min.-1.20 max. |
800H Stainless Steel Sheet Physical Properties:
| Mean Coefficient of Thermal Expansion Temperature Range |
|||
| °F | °C | in/in/°F | cm/cm°C |
| 200 | 93 | 7.9 x 10-6 | 14.4 x 10-6 |
| 400 | 204 | 8.8 x 10-6 | 15.9 x 10-6 |
| 600 | 316 | 9.0 x 10-6 | 16.2 x 10-6 |
| 800 | 427 | 9.2 x 10-6 | 16.5 x 10-6 |
| 1000 | 538 | 9.4 x 10-6 | 16.8 x 10-6 |
| 1200 | 649 | 9.6 x 10-6 | 17.1 x 10-6 |
| 1400 | 760 | 9.9 x 10-6 | 17.5 x 10-6 |
| 1600 | 871 | 10.2 x 10-6 | 18.0 x 10-6 |
800H Stainless Steel Sheet Corrosion Resistance:
The high nickel and chromium content of Alloys 800H generally means it will have very similar aqueous corrosion resistance. The alloys have corrosion resistance that is comparable to 304 when used in nitric and organic acid service. The alloys should not be used in sulfuric acid service. They are subject to chromium carbide precipitation if in service for prolonged exposure in the 1000-1400°F (538-760°C) temperature range.
Since Alloys 800H was developed primarily for hightemperature strength, corrosive environments to which these grades are exposed normally involve high temperature reactions such as oxidation and carburization.
800H Stainless Steel Sheet Mechanical Properties:
Typicals Values at 70°F (21°C)
| Yield Strength 0.2% Offset |
Ultimate Tensile Strength |
Elongation in 2 in. |
Hardness | ||
| psi (min.) | (MPa) | psi (min.) | (MPa) | % (min.) | (max.) |
| 29,000 | 200 | 77,000 | 531 | 52 | 126 Brinell |
800H Stainless Steel Sheet Applications:
1) Chemical and Petrochemical Processing—process equipment for the production of ethylene, ethylene dichloride, acetic anhydride, ketene, nitric acid and oxy-alcohol
2) Petroleum Refining—steam/hydrocarbon reformers and hydrodealkylation units
3) Power Generation—steam super-heaters and high temperature heat exchangers in gas-cooled nuclear reactors, heat exchangers and piping systems in coal-fired power plants
4) Thermal Processing Fixtures—radiant tubes, muffles, retorts and fixtures for heat-treating furnaces
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