Alloy 800,Incoloy 800 Foil,Shim,N08800,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

### **Product Datasheet: Alloy 800 / Incoloy 800 Foil & Shim Stock (UNS N08800)** #### **1. Overview** **Alloy 800** (commonly known as **Incoloy 800** and designated **UNS N08800**) is a nickel-iron-chromium superalloy renowned for its high strength and exceptional resistance to oxidation, carburization, and corrosion. This datasheet focuses on the alloy in the form of **Foil** and **Shim Stock**. * **Foil:** A very thin, flexible sheet, typically defined as less than 0.005 inches (0.127 mm) thick, used for wrapping, shielding, and gasketing. * **Shim Stock:** A thin sheet material, often in a range from about 0.001 to 0.060 inches (0.025 mm to 1.5 mm), supplied in precise thicknesses for use as spacers, fillers, and seals in high-temperature assemblies. Incoloy 800 foil and shims leverage the alloy's base properties in applications where minimal thickness, precise dimensional control, and high-temperature integrity are critical. **Key Characteristics for Foil & Shim Applications:** * **Excellent High-Temperature Strength:** Maintains dimensional stability and mechanical properties under continuous high-temperature exposure. * **Outstanding Oxidation & Carburization Resistance:** The protective chromium oxide scale prevents degradation in furnace atmospheres. * **Good Formability and Flexibility:** Foil can be easily formed, wrapped, or shaped around complex components. * **Consistent Thickness & Surface Finish:** Precisely rolled to ensure uniform performance as a seal, spacer, or shield. * **Corrosion Resistance:** Suitable for use in corrosive chemical and marine environments. --- #### **2. Chemical Composition (Weight % - Typical)** The chemical composition is consistent with other forms of Alloy 800, ensuring the same robust performance. | Element | Content (%) | Role and Effect | | :--- | :--- | :--- | | **Nickel (Ni)** | 30.0 - 35.0 | Provides the austenitic matrix, ductility, and resistance to chloride stress corrosion cracking. | | **Chromium (Cr)** | 19.0 - 23.0 | Imparts primary resistance to oxidation and corrosion. | | **Iron (Fe)** | Balance (~39.5%) | The base element of the alloy. | | **Carbon (C)** | 0.05 - 0.10 | Contributes to high-temperature strength. | | **Manganese (Mn)**| ≤ 1.5 | Aids in deoxidation during melting. | | **Silicon (Si)** | ≤ 1.0 | Enhances resistance to oxidation and carburization. | | **Sulfur (S)** | ≤ 0.015 | Impurity, kept low to ensure good fabricability. | | **Aluminum (Al)** | 0.15 - 0.60 | Acts as a strengthener. | | **Titanium (Ti)** | 0.15 - 0.60 | Stabilizes the alloy against sensitization. | --- #### **3. Physical Properties (Typical for Wrought Foil/Sheet)** | Property | Value | | :--- | :--- | | **Density** | 0.29 lb/in³ (8.03 g/cm³) | | **Melting Point** | 2470-2520°F (1355-1385°C) | | **Thermal Conductivity** (68°F / 20°C) | 6.8 Btu·in/hr·ft²·°F (11.5 W/m·K) | | **Mean Coefficient of Thermal Expansion** (70-1000°F / 20-540°C) | 8.9 x 10⁻⁶/°F (16.0 x 10⁻⁶/°C) | | **Modulus of Elasticity** | 29.1 x 10⁶ psi (201 GPa) | --- #### **4. International Standards** While foil and shim stock are often supplied to customer-specific thickness tolerances, they are manufactured from material that conforms to major international standards for sheet and strip. | Standard Type | Standard Number | Title / Scope | | :--- | :--- | :--- | | **Material Specification** | ASTM B409 | Standard Specification for Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip | | **Material Specification** | ASME SB-409 | Equivalent to ASTM B409 for ASME code applications. | | **Dimensional Tolerances** | ASTM B906 | Standard Specification for General Requirements for Flat-Rolled Nickel and Nickel Alloys Plate, Sheet, and Strip (defines thickness tolerances). | | **European Standard** | DIN 17750 | Sheet, strip and foil of nickel and nickel alloys; technical delivery conditions. | | **UNS Designation** | UNS N08800 | Unified Numbering System. | **Common Thickness Range:** * **Foil:** 0.0005" to 0.005" (0.0127 mm to 0.127 mm) * **Shim Stock:** 0.001" to 0.060" (0.025 mm to 1.5 mm) --- #### **5. Product Applications** Incoloy 800 foil and shim stock are used in specialized, high-performance applications across various industries: * **Thermal Processing & Furnace Construction:** * **Foil:** Used as a flexible wrap or inner liner to protect sensitive components from carburizing or oxidizing atmospheres. * **Shims:** As high-temperature spacers and seals between furnace muffle sections, radiant tubes, and other hot zone assemblies. * **Aerospace & Turbine Engineering:** * **Shims:** For precise gap setting and alignment in turbine engine assemblies, exhaust systems, and afterburners where temperatures are high. * **Foil:** As a heat shield or reflective blanket material. * **Vacuum & Heat Treating Furnaces:** * **Foil Bags & Wraps:** Used to create a protective atmosphere around parts during heat treatment (hot isostatic pressing, annealing). * **Radiation Shields:** Multiple layers of foil are used to create effective thermal radiation barriers. * **Chemical Processing:** * **Gaskets & Seals:** Custom-cut shims and gaskets for flanges and reactors operating in corrosive environments. * **Lining:** Thin foil used as a protective liner in vessels or pipes. * **Electronics & Semiconductors:** * **Heat-Resistant Mounting:** Shim stock used in the construction of high-temperature processing equipment for semiconductor manufacturing. --- **Conclusion** Alloy 800 / Incoloy 800 (UNS N08800) foil and shim stock provide an essential thin-gauge solution for extreme environments. They combine the alloy's inherent high-temperature strength and corrosion resistance with the precision and flexibility required for critical sealing, shielding, and spacing applications. Whether used as a protective wrap in a heat-treating furnace or a precision spacer in a jet engine, this material delivers reliable performance where other materials would fail.

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 1895 gallon liquid totes Special package is available on request.