Alloy 800H,Incoloy 800H Foil,Shim,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 Datasheet: Alloy 800H / Incoloy 800H Foil & Shim (UNS N08810)** ### **1.0 Product Overview** **Alloy 800H Foil and Shim** (commercially known as **Incoloy 800H Foil/Shim**, UNS **N08810**) is a thin-gauge, high-performance nickel-iron-chromium superalloy engineered for extreme-temperature applications requiring precision thickness and dimensional stability. The "H" designation signifies controlled carbon content (0.05–0.10%) and optimized aluminum/titanium ratios, ensuring superior creep resistance and microstructural stability in ultrathin sections (typically ≤0.2 mm). --- ### **2.0 Chemical Composition (wt%)** | Element | Content (ASTM B409) | Role | |---------|---------------------|------| | Ni | 30.0–35.0 | Austenitic matrix stability, oxidation/carburization resistance | | Cr | 19.0–23.0 | High-temperature oxidation and sulfidation resistance | | Fe | ≥39.5 | Base element | | C | 0.05–0.10 | **Key for "H" grade**; enhances creep strength via carbide formation | | Al | 0.15–0.60 | Forms protective oxide scale; improves oxidation resistance | | Ti | 0.15–0.60 | Stabilization and precipitation strengthening | | Mn | ≤1.50 | Improves hot workability | | Si | ≤1.00 | Enhances oxidation/carburization resistance | | S | ≤0.015 | Minimized to avoid hot shortness | | Cu | ≤0.75 | — | *Note: Al + Ti ≥ 0.85% for UNS N08810.* --- ### **3.0 Physical Properties** | Property | 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 (70°F) | | Thermal Conductivity | 15.6 W/m·K (9.0 Btu·in/hr·ft²·°F) | 21°C (70°F) | | Thermal Expansion | 16.6 × 10⁻⁶ /K | 20–650°C | | Electrical Resistivity | 116 μΩ·cm (45.8 μΩ·in) | 21°C (70°F) | | Modulus of Elasticity | 201 GPa (29.1 × 10⁶ psi) | RT | | Magnetic Permeability | <1.05 | Essentially non-magnetic | --- ### **4.0 Mechanical Properties** **Typical Room-Temperature 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% (thickness-dependent) - **Hardness:** 70–90 HRB **High-Temperature Performance** - **Max Service Temperature:** 815°C (1500°F) continuous - **Creep Strength:** Excellent under sustained loads at high temperatures - **Oxidation Resistance:** Suitable for long-term use in air up to 1150°C (2100°F) --- ### **5.0 International Standards** | Standard Type | Number | Description | |--------------|--------|-------------| | UNS | N08810 | Unified Numbering System | | ASTM | B409 | Plate, Sheet, and Strip (including foil/shim) | | ASME | SB-409 | Boiler and Pressure Vessel Code | | AMS | 5876 | Aerospace Material Specification (foil) | | EN/DIN | 1.4876 | X8NiCrAlTi32-21 | | ISO | 6207 | Nickel alloy strip/foil specifications | --- ### **6.0 Product Forms & Dimensions** **Foil** - Thickness: 0.025–0.20 mm (0.001–0.008 in) - Width: 50–600 mm (2–24 in) - Finish: 2B (cold-rolled), BA (bright annealed), or matte **Shim Stock** - Thickness: 0.20–0.50 mm (0.008–0.020 in) - Custom shapes/sizes available (e.g., punched, stamped) --- ### **7.0 Applications** **Aerospace & Defense** - Turbine sealing shims - Combustion chamber gaskets - Thermal shield components - Rocket engine insulation **Electronics & Energy** - High-temperature heating elements - Thermocouple sheaths/shim stock - Fuel cell components - Battery thermal management **Industrial Equipment** - Furnace radiation shields - Heat treatment fixtures - High-temperature gaskets/spacers - Brazing foils for joint filling **Automotive** - Exhaust gaskets - Turbocharger heat shields - Sensor mounting shims --- ### **8.0 Fabrication Notes** - **Forming:** Excellent ductility in annealed condition; minimal springback in hard tempers. - **Welding:** Use GTAW/TIG with matching filler (e.g., ERNiCrFe-8). Post-weld annealing recommended. - **Machining:** Low machinability rating; use sharp tools and coolants. - **Joining:** Compatible with brazing (e.g., Ni-Cr-Si filler metals) and laser welding. --- ### **9.0 Quality Assurance** - Certification to EN 10204 3.1/3.2 - Dimensional tolerances per ASTM B409 - Ultrasonic or eddy current testing available - Grain size control for optimized high-temperature performance --- ### **10.0 Why Choose Alloy 800H Foil/Shim?** - **High-Temperature Stability:** Resists oxidation, carburization, and creep deformation. - **Precision Manufacturing:** Tight thickness tolerances and uniform properties. - **Versatility:** Suitable from cryogenic to 1150°C environments. - **Non-Magnetic:** Ideal for electronic and sensitive applications. --- **Contact Us** For custom sizes, technical support, or certification details, reach out to our engineering 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 1908 gallon liquid totes Special package is available on request.