N08811
Incoloy 800HT (UNS N08811 / W.Nr. 1.4958) nickel-iron-chromium alloys that have the same basic composition as INCOLOY alloy 800 but with significantly higher creep-rupture strength.
Incoloy 800HT Key Features
Corrosion Resistance: The addition of nickel & chromium to 800HT ensures excellent carburization, oxidation, & sulfidation.
Organic Media Resistance: This alloy also flaunts great resistance to widely found organic media components such as acetic, formic, as well as propionic acids.
High Heat Fabrication: Alloy 800HT is known to fabricate easily in high heat between 1200°F & 1600°F. However, anything below this leads to improper fabrication.
High Resistance to Creep Rupture: Incoloy 800HT has better creep-rupture resistance strength as compared to Alloy 800 given the close control for Al, Ti, & C.
Incoloy 800HT Chemical Composition
| Alloy | C(％) | Si(％) | Mn(％) | P(％) | S(％) | Ni(％) | Ti(％) | Ti+Al(％) | Cr(％) | Fe(％) |
| Incoloy 800HT | 0.06-0.10 | ≤1.0 | ≤3.00 | ≤0.03 | ≤0.02 | 30.00-35.00 | 0.15-0.60 | 0.25-1.20 | 19.00-23.00 | ≥39.5 |
Incoloy 800HT Mechanical Properties
| Melting Point, ºC | Tensile Strength Mpa | Yield Strength Mpa | Elongation % | Hardness HB | |||||
| 1357-1400 | 500 | 210 （Rp0.2） | 35 | – | |||||
Available Sizes And Standards
| Grade | Incoloy 800HT | ||||||
| Nickel coil | Thickness:0.3mm- 16.0mm Width: 1000mm – 3000mm | ||||||
| Nickel plate | Thickness:0.3mm- 150.0mm Width: 1000mm – 3000mm | ||||||
| Nickel strip/ nickel foil | Thickness:0.02mm- 16.0mm Width: 5mm – 3000mm | ||||||
| Nickel pipe | Outside diameter:6mm- 1219.0mm Thickness:0.5mm- 100.0mm | ||||||
| Nickel Capillary Pipe | Outside diameter:0.5mm- 6.0mm Thickness:0.05mm- 2.0mm | ||||||
| Nickel bar | Diameter: Ф4mm – Ф600mm | ||||||
| Nickel wire rod | Diameter:Ф0.01mm – Ф6mm | ||||||
| Standards | Plate, Sheet and Strip | ASTM A240/A480/B409/B906/ASME SA240/SA480/SB409/SB906, ISO 6208 | |||||
| Pipe and Tube | ASTM B163/ASME SB163, ASTM B407/B829/ASME SB407/SB829, ASTM B514/B775/ASME SB514/SB775, ASTM B515/B751/ASME SB515/SB751, ISO 6207 | ||||||
| Rod, Bar, Wire and Forgings | ASTM B408/ASME SB408, ASTM B564/ASME SB564, ISO 9723/9724/9725 | ||||||
| Others | ASTM B366/ASME SB366(Fittings) | ||||||
Applications
Chemical and Petrochemical Processing-process equipment for the production of ethylene, ethylene dichloride, acetic anhydride, ketene and oxy-alcohol
Petroleum Refining-steam/hydrocarbon reformers and hydrodealkylation units
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
Thermal Processing Fixtures-radiant tubes, muffles, retorts and fixtures for heat-treating furnaces
Nickel coils
Nickel plate/sheet
Nickel strip/ nickel foil
Nickel pipe/capillary pipe
Nickel bar/wire rod
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