Alloy 800H,Incoloy 800H Sheet,N08810,E FORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA15，American Specs:AMS 5766 Bar and Forgings AMS 5871 Sheet, Strip and Plate ASTM B408 ASTM B564 ASTM A240 ASTM A480，German Specs:WS 1.4876 WS 1.4958 WS 1.4959

### **Technical Data Sheet: Alloy 800H / Incoloy 800H Sheet (UNS N08810)** --- #### **1.0 Product Overview** **Alloy 800H Sheet** (commercially known as **Incoloy 800H Sheet**, UNS **N08810**) represents the thin-gauge product form of a nickel-iron-chromium superalloy specifically designed for high-temperature applications. The "H" designation indicates controlled chemistry with elevated carbon content (0.05-0.10%) and a specific annealing treatment that produces optimal grain structure for enhanced creep and stress-rupture properties. This sheet material combines excellent high-temperature strength with outstanding resistance to oxidation and carburization, making it suitable for thin-section components in aggressive thermal environments. --- #### **2.0 Chemical Composition** | Element | Content (%) (Per ASTM B409) | Function | |---------|------------------------------|----------| | **Nickel (Ni)** | 30.0 - 35.0 | Austenitic matrix formation, oxidation and carburization resistance | | **Chromium (Cr)** | 19.0 - 23.0 | High-temperature oxidation and sulfidation resistance | | **Iron (Fe)** | ≥ 39.5 | Balance element, provides alloy matrix | | **Carbon (C)** | 0.05 - 0.10 | **Key element for "H" grade** - enhances creep rupture strength | | **Aluminum (Al)** | 0.15 - 0.60 | Oxidation resistance through protective scale formation | | **Titanium (Ti)** | 0.15 - 0.60 | Stabilization and high-temperature strengthening | | **Manganese (Mn)** | ≤ 1.50 | Hot workability improvement | | **Copper (Cu)** | ≤ 0.75 | - | | **Silicon (Si)** | ≤ 1.00 | Enhances oxidation and carburization resistance | | **Sulfur (S)** | ≤ 0.015 | Impurity control | *Note: Aluminum + Titanium content ≥ 0.85% for N08810 specification* --- #### **3.0 Physical Properties** | Property | Metric Value | Imperial Value | Condition | |----------|--------------|----------------|-----------| | **Density** | 8.03 g/cm³ | 0.29 lb/in³ | At 20°C (68°F) | | **Melting Range** | 1354-1384°C | 2470-2520°F | - | | **Specific Heat** | 460 J/kg·K | 0.11 Btu/lb·°F | At 21°C (70°F) | | **Mean Coefficient of Thermal Expansion** | 16.6 × 10⁻⁶ /K | 9.2 × 10⁻⁶ /°F | 20-650°C (70-1200°F) | | **Thermal Conductivity** | 15.6 W/m·K | 9.0 Btu·in/hr·ft²·°F | At 21°C (70°F) | | **Electrical Resistivity** | 116 μΩ·cm | 45.8 μΩ·in | At 21°C (70°F) | | **Modulus of Elasticity** | 201 GPa | 29.1 × 10⁶ psi | At 21°C (70°F) | | **Magnetic Permeability** | < 1.05 | < 1.05 | Essentially non-magnetic | --- #### **4.0 Mechanical Properties** **ASTM B409 - Sheet Product (Annealed Condition)** - **Tensile Strength:** 450 MPa (65 ksi) minimum - **Yield Strength (0.2% Offset):** 170 MPa (25 ksi) minimum - **Elongation in 2 inches:** 30% minimum **High-Temperature Capability** - **Maximum Continuous Service Temperature:** 815°C (1500°F) - **Creep Strength:** Excellent up to 815°C (1500°F) - **Stress Rupture Life:** Superior performance under sustained loading --- #### **5.0 International Standards & Specifications** | Standard Type | Standard Number | Description | |---------------|-----------------|-------------| | **UNS** | **N08810** | Unified Numbering System | | **ASTM** | **B409/B409M** | Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip | | **ASME** | **SB-409** | ASME Boiler and Pressure Vessel Code Section I & VIII | | **EN/DIN** | **1.4876** | Material Number X8NiCrAlTi32-21 | | **ISO** | **6207** | Nickel alloy plate, sheet, and strip | --- #### **6.0 Product Applications** **Thermal Processing Equipment** - Heat treatment furnace linings and interiors - Radiant heat shields and baffles - Muffles and retorts - Annealing covers and fixtures **Aerospace & Aviation** - Combustion chamber components - Afterburner parts - Heat shield assemblies - Exhaust system components **Power Generation** - Heat exchanger surfaces - Turbine shroud segments - Combustion liner parts - High-temperature gaskets and seals **Chemical Processing** - Reactor linings and covers - Distillation column internals - High-temperature filter elements - Process vessel cladding **Industrial Manufacturing** - High-temperature conveyor belts - Sintering trays and pans - Brazing fixtures and jigs - Thermal processing fixtures --- #### **7.0 Fabrication Characteristics** **Forming Operations** - Excellent cold forming characteristics - Good ductility for deep drawing applications - Suitable for spinning and stretch forming - Minimum bend radii: 1.5t (annealed), 2.5t (as-rolled) **Welding Compatibility** - Excellent weldability using common processes - Recommended processes: GTAW, GMAW, SMAW - Filler metals: ENiCrFe-2, ENiCrFe-3 - Post-weld heat treatment recommended **Machining** - Can be machined using standard methods - Use positive rake angles and sharp tools - Adequate coolant supply recommended - Work hardening requires consistent feed rates **Surface Finishing** - Good response to pickling and passivation - Suitable for various surface treatments - Can be polished to high surface finishes --- #### **8.0 Key Advantages** - **Superior High-Temperature Strength:** Excellent creep and stress rupture properties - **Outstanding Oxidation Resistance:** Continuous service to 815°C (1500°F) - **Excellent Carburization Resistance:** Maintains integrity in hydrocarbon atmospheres - **Good Thermal Fatigue Resistance:** Withstands thermal cycling - **Non-Magnetic Characteristic:** Suitable for specialized applications - **Excellent Fabricability:** Good forming and welding characteristics - **Consistent Performance:** Reliable long-term service in aggressive environments --- #### **9.0 Quality Assurance & Supply** **Standard Specifications:** - Thickness range: 0.5mm to 6.0mm (0.020" to 0.250") - Widths up to 1500mm (60 inches) - Lengths up to 6000mm (240 inches) **Quality Documentation:** - Mill Test Certificate 3.1 according to EN 10204 - Chemical Analysis Certificate - Mechanical Properties Certification - Non-Destructive Testing Reports (as required) **Available Conditions:** - Solution Annealed - Pickled and Descaled - Cold Rolled - Surface Finish: 2B, 2D, or as specified --- ### **Conclusion** **Alloy 800H / Incoloy 800H Sheet (UNS N08810)** offers an exceptional combination of high-temperature strength, corrosion resistance, and fabricability in thin-gauge form. Its superior performance in aggressive thermal environments makes it the material of choice for critical applications across aerospace, thermal processing, power generation, and chemical processing industries. The material's consistent properties and reliable performance ensure long service life in the most demanding operating conditions.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1903 gallon liquid totes Special package is available on request.