N08810
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N08810 is a high-performance nickel-iron-chromium alloy, specifically designed for high-temperature environments, and possesses excellent oxidation, carburization, and sulfidation resistance.
Product name：
German sign number
Material：
2.4668
Warehouse：
Tianjin
Surface treatment：
Pickled/bright/black leather etc.
Keyword：
N08810
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Details description
Basic Information
Name: N08810 (UNS Number), corresponding to Incoloy 800H (ASTM B409), Incoloy 800HT (ASTM B408), and GH1180 in China.
Classification: Nickel-iron-chromium alloy (Ni-Fe-Cr based), a solid solution strengthened high-temperature alloy.
Characteristics: Excellent strength and creep resistance at high temperatures, while maintaining superior corrosion resistance.
Physical Properties
Density: 8.0 g/cm³
Melting Point: 1350-1400°C
Coefficient of Thermal Expansion: 14.6×10⁻⁶/°C (20-100°C)
Thermal Conductivity: 11.7 W/(m·K) (100°C)
Elastic Modulus: 200 GPa (room temperature)
Main Characteristics
High-Temperature Resistance:
Excellent oxidation and carburization resistance in the range of 800-1100°C.
The addition of titanium and aluminum elements forms a stable oxide layer, effectively resisting high-temperature corrosion.
Creep Resistance:
Compared to ordinary Incoloy 800, 800H/HT significantly improves high-temperature strength and creep resistance through controlled carbon content (0.05-0.10%) and heat treatment processes.
Corrosion Resistance:
Good resistance to various corrosive media (such as sulfuric acid, phosphoric acid, nitric acid, etc.).
Excellent performance in sulfur-containing atmospheres, strong sulfidation resistance.
Processing Performance:
Wide hot working temperature range (1100-950°C), good cold working performance.
It can be processed by conventional welding methods (such as TIG, MIG), but care must be taken to control heat input to avoid intergranular corrosion.
Product Specifications and Supply Forms
Plates/Strips: Thickness 0.5-10mm, width ≤1500mm.
Pipes: Seamless pipes (outer diameter 6-219mm, wall thickness 0.5-20mm), welded pipes.
Bars/Wires: Diameter 5-200mm, wires can be used for welding.
Forgings: Customized parts such as flanges, valves, and shafts.
Application Fields
Chemical Industry:
Heat treatment furnace components (furnace rollers, radiant tubes, fixtures).
Petrochemical cracking furnace tubes, converter pipelines.
Energy Sector:
Nuclear power steam generator heat transfer tubes.
Superheaters and reheater pipelines in coal-fired power plants.
Environmental Protection Equipment:
Linings and grates of garbage incinerators.
Absorption towers and pipelines in flue gas desulfurization (FGD) systems.
Other Fields:
Food processing equipment (high-temperature sterilization kettles).
Heat-resistant components in glass manufacturing.
Usage Precautions
Welding: It is recommended to use matching nickel-based welding materials (such as ERNiCr-3), and solution treatment is required after welding to eliminate stress.
Heat Treatment: 800H requires solution annealing at 1000-1065°C, 800HT requires solution annealing at 1120-1180°C to achieve optimal performance.
Temperature Limit: The long-term use temperature should not exceed 1100°C, and avoid staying in the 400-700°C range to prevent embrittlement.
Comparison with Other Alloys
Compared with Incoloy 800: 800H/HT significantly improves high-temperature strength and creep resistance through higher carbon content and specific heat treatment.
Compared with Inconel 600: Lower cost, higher iron content, suitable for non-strongly reducing environments.
Implementation Standards
International: ASTM B409 (plates), ASTM B514 (pipes), ASTM B564 (forgings).
Domestic: GB/T 15007 (NS1102), GB/T 14992 (high-temperature alloy classification).
Qualification certification
Corporate video
Seamless steel pipe manufacturing
3PE anti-corrosion pipe manufacturing
Spiral steel pipe manufacturing
Application fields
Petrochemicals
Petrochemicals
Aerospace
Aerospace
Energy equipment
Energy equipment
Oil/gas/water pipelines
Oil/gas/water pipelines
Building construction
Building construction
Dredging & piling works
Dredging & piling works
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