Alloy 800HT,Incoloy 800HT Foil,Shim,N08811,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 Datasheet: Alloy 800HT / Incoloy 800HT Foil & Shim Stock (UNS N08811)** --- ### **1.0 Product Overview** **Alloy 800HT Foil and Shim Stock** (commercially known as **Incoloy 800HT Foil/Shim**, UNS **N08811**) represents the thin-gauge product form of this enhanced nickel-iron-chromium superalloy, specifically engineered for high-temperature applications requiring minimal thickness and precise dimensional control. With optimized chemistry featuring controlled carbon content (0.06–0.10%) and elevated aluminum+titanium (Al + Ti ≥ 1.20%), this alloy delivers superior creep rupture strength and oxidation resistance in ultra-thin sections at temperatures up to 815°C (1500°F). These products combine exceptional high-temperature properties with excellent formability for precision applications in demanding thermal environments. --- ### **2.0 Chemical Composition (wt%)** | Element | Content (ASTM B409/ASME SB-409) | Role | |---------|----------------------------------|------| | **Nickel (Ni)** | 30.0–35.0 | Austenitic matrix stability, oxidation/carburization resistance | | **Chromium (Cr)** | 19.0–23.0 | High-temperature oxidation and sulfidation resistance | | **Iron (Fe)** | ≥39.5 | Base element | | **Carbon (C)** | 0.06–0.10 | Enhanced carbide strengthening for creep resistance | | **Aluminum (Al)** | 0.25–0.60 | Forms stable protective oxide scale | | **Titanium (Ti)** | 0.25–0.60 | Stabilization and precipitation strengthening | | **Manganese (Mn)** | ≤1.50 | Improves hot workability | | **Silicon (Si)** | ≤1.00 | Enhances oxidation/carburization resistance | | **Sulfur (S)** | ≤0.015 | Minimized to avoid hot shortness | | **Copper (Cu)** | ≤0.75 | — | *Critical Requirement: Aluminum + Titanium ≥ 1.20% for UNS N08811* --- ### **3.0 Physical Properties** | Property | Metric Value | Imperial Value | Condition | |----------|--------------|----------------|-----------| | **Density** | 8.03 g/cm³ | 0.29 lb/in³ | RT | | **Melting Range** | 1354–1384°C | 2470–2520°F | — | | **Specific Heat** | 460 J/kg·K | 0.11 Btu/lb·°F | 21°C | | **Thermal Conductivity** | 15.6 W/m·K | 9.0 Btu·in/hr·ft²·°F | 21°C | | **Thermal Expansion** | 16.6 × 10⁻⁶ /K | 9.2 × 10⁻⁶ /°F | 20–650°C | | **Electrical Resistivity** | 116 μΩ·cm | 45.8 μΩ·in | 21°C | | **Modulus of Elasticity** | 201 GPa | 29.1 × 10⁶ psi | RT | | **Magnetic Permeability** | <1.05 | <1.05 | Essentially non-magnetic | --- ### **4.0 Mechanical Properties** **Standard Mechanical Properties (Annealed Condition)** - **Tensile Strength:** 450–620 MPa (65–90 ksi) - **Yield Strength (0.2% Offset):** 170–380 MPa (25–55 ksi) - **Elongation:** 20–40% (varies with thickness) - **Hardness:** 70–90 HRB **Thickness-Specific Properties** | Thickness Range | Tensile Strength | Yield Strength | Elongation | |-----------------|------------------|----------------|------------| | **0.025–0.10mm** | 480–550 MPa | 200–300 MPa | 20–30% | | **0.10–0.20mm** | 450–520 MPa | 170–250 MPa | 25–35% | | **0.20–0.50mm** | 450–500 MPa | 170–220 MPa | 30–40% | --- ### **5.0 International Standards** | Standard Type | Standard Number | Description | |--------------|----------------|-------------| | **UNS** | N08811 | Unified Numbering System | | **ASTM** | B409 | Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip | | **ASME** | SB-409 | Boiler and Pressure Vessel Code | | **AMS** | 5876 | Aerospace Material Specification - Foil | | **EN/DIN** | 1.4959 | X8NiCrAlTi32-21 (Enhanced) | | **ISO** | 6207 | Nickel alloy strip specifications | --- ### **6.0 Product Specifications** **Foil & Shim Thickness Ranges** - **Ultra-Thin Foil:** 0.025mm to 0.10mm (0.001" to 0.004") - **Standard Foil:** 0.10mm to 0.20mm (0.004" to 0.008") - **Shim Stock:** 0.20mm to 0.50mm (0.008" to 0.020") **Standard Widths & Forms** - **Width Range:** 50mm to 600mm (2" to 24") - **Coils:** ID 150–300mm, OD up to 1200mm - **Sheets:** Custom sizes up to 1000mm × 2000mm - **Pre-cut Shims:** Standard and custom shapes **Tolerances** - **Thickness:** ±0.005mm for precision grades - **Width:** ±0.1mm for slit edges - **Camber:** 1mm per meter maximum - **Flatness:** 2mm per meter maximum --- ### **7.0 Applications** **Aerospace & Defense** - Turbine blade sealing shims - Combustion chamber gaskets - Thermal protection systems - High-temperature insulation blankets - Rocket engine components **Electronics & Electrical** - High-temperature heating elements - Thermocouple compensation leads - Electrical resistance strips - Battery component separators - High-temperature circuit elements **Industrial Furnace Applications** - Radiation heat shields - Furnace curtain systems - Thermal barrier components - High-temperature gaskets - Muffle furnace linings **Precision Engineering** - High-temperature shim stock - Thermal expansion joints - High-precision spacers - Critical clearance components --- ### **8.0 Specialized Applications** **Foil-Specific Applications** - Thin-film deposition substrates - High-temperature vacuum furnace components - Laboratory sample holders - Precision brazing foils - High-temperature filters **Shim-Specific Applications** - Turbine clearance control shims - High-temperature gaskets - Precision alignment shims - Thermal expansion compensators - High-pressure sealing elements --- ### **9.0 Fabrication Characteristics** **Forming & Blanking** - Excellent punchability and blanking characteristics - Good springback control in hardened tempers - Suitable for progressive die operations - Minimum bend radii: 0.5t (annealed), 1.5t (hard) **Joining Methods** - **Resistance Welding:** Excellent capability - **Laser Welding:** Precision joining - **EB Welding:** High-quality joints - **Brazing:** Compatible with high-temperature alloys **Heat Treatment** - **Solution Annealing:** 1120–1170°C (2050–2140°F) - **Bright Annealing:** In controlled atmosphere - **Stress Relieving:** For dimensional stability --- ### **10.0 Quality Assurance** **Testing & Certification** - Mill Test Certificate 3.1 per EN 10204 - Chemical analysis certification - Mechanical properties verification - Dimensional compliance reports **Surface Finishes** - **2B Finish:** Standard cold-rolled finish - **BA Finish:** Bright annealed surface - **Matte Finish:** For improved adhesion - **Special Finishes:** Coated or treated surfaces **Special Testing** - High-temperature property verification - Surface roughness measurement - Grain size determination - Non-destructive testing as required --- ### **11.0 Advantages over Standard 800H Foil/Shim** - **Enhanced High-Temperature Strength:** Superior creep resistance at 650–815°C - **Improved Oxidation Resistance:** Higher Al+Ti content provides better scale formation - **Superior Microstructural Stability:** Resists embrittlement in long-term service - **Better Thermal Fatigue Resistance:** Enhanced performance in cyclic conditions - **Extended Service Life:** Proven reliability in critical applications --- ### **12.0 Packaging & Handling** - Protective winding with interleaving - Waterproof and vapor-proof wrapping - Custom packaging for sensitive applications - Clean, dry handling environment required - Proper support to prevent deformation --- **Contact Information** For technical specifications, pricing, or custom foil/shim requirements, please contact our technical sales team.

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 1921 gallon liquid totes Special package is available on request.