Alloy 801,Incoloy 801 Sheet,UNS N08801,E FORU

British Specs:，American Specs: AMS 5552 Sheet, Strip and Plate，German Specs:

### **Product Introduction: Alloy 801 / Incoloy 801 / UNS N08801 Sheet** **Overview** Alloy 801, commonly known by the trade name **Incoloy 801**, is a nickel-iron-chromium alloy designed for high-temperature service. It is stabilized with titanium to resist intergranular corrosion and to provide excellent resistance to oxidation and carburization. This alloy is engineered to maintain its strength and structural integrity in corrosive atmospheres at temperatures up to 1100°C (2012°F). Incoloy 801 sheet is a preferred material for fabricating components that require long-term thermal stability and resistance to aggressive environments, such as those found in the petrochemical and heat-treating industries. **Key Characteristics** * **Excellent Oxidation Resistance:** Superior performance in cyclic and continuous service up to 1100°C. * **Good Carburization Resistance:** Withstands carburizing (carbon-rich) atmospheres, preventing embrittlement. * **High-Temperature Strength:** Maintains good mechanical properties and creep resistance at elevated temperatures. * **Stabilized Structure:** The titanium addition prevents sensitization and subsequent intergranular corrosion after exposure to high temperatures. * **Good Formability and Weldability:** Can be readily formed and welded using standard techniques. --- ### **Chemical Composition (Weight %)** The typical chemical composition of UNS N08801 is specified in various international standards. The following is a representative range: | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 30.0 - 34.0 | | **Chromium (Cr)** | 19.0 - 22.0 | | **Iron (Fe)** | Balance | | **Carbon (C)** | 0.05 - 0.10 | | **Titanium (Ti)** | 0.15 - 0.60 | | **Aluminum (Al)** | ≤ 0.30 | | **Manganese (Mn)** | ≤ 1.50 | | **Silicon (Si)** | ≤ 1.00 | | **Copper (Cu)** | ≤ 0.75 | | **Sulfur (S)** | ≤ 0.015 | *Note: The balance is Iron (Fe), with trace amounts of other residual elements.* --- ### **Physical Properties** The following are typical physical properties for Incoloy 801 at room temperature. | Property | Value | | :--- | :--- | | **Density** | 7.95 g/cm³ (0.287 lb/in³) | | **Melting Range** | 1350 - 1400 °C (2460 - 2550 °F) | | **Specific Heat (20°C)** | 450 J/kg·K | | **Electrical Resistivity** | 1.00 μΩ·m | | **Thermal Conductivity (20°C)** | 11.9 W/m·K | | **Mean Coefficient of Thermal Expansion (20-1000°C)** | 14.7 x 10⁻⁶ /°C | --- ### **Mechanical Properties (Typical for Sheet at Room Temperature)** Properties can vary based on the heat treatment (typically annealed) and product form. | Property | Value | | :--- | :--- | | **Tensile Strength** | ≥ 520 MPa (75 ksi) | | **Yield Strength (0.2% Offset)** | ≥ 205 MPa (30 ksi) | | **Elongation (in 2 inches)** | ≥ 30% | | **Hardness (Rockwell B)** | ≤ 85 HRB | --- ### **Product Applications** Incoloy 801 sheet is widely used in applications demanding high temperature and corrosion resistance. Key sectors include: * **Petrochemical Industry:** * Furnace components (radiant tubes, muffles, retorts) * Transfer piping and reactor internals for ethylene production * Catalyst support grids in reformers * **Heat Treating Industry:** * Basket fixtures, trays, and conveyor belts for carburizing and neutral hardening furnaces * **Power Generation:** * Heat exchangers, superheater tubes, and other boiler components * **Industrial Heating:** * Element support hardware and combustion chambers * **Nuclear Power:** * Certain core components and heat exchangers --- ### **International Standards** Incoloy 801 / UNS N08801 is covered by a range of international standards for plate, sheet, and tube forms. | Standard Type | Standard Number | Specification | | :--- | :--- | :--- | | **Material Standard** | **ASTM B409** | Standard Specification for Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip | | **Material Standard** | **ASME SB-409** | Equivalent to ASTM B409 for ASME Boiler and Pressure Vessel Code applications | | **Material Standard** | **DIN 17742** | Wrought Nickel-Iron-Chromium Alloys - Chemical Composition | | **Material Standard** | **EN 10095** | Heat resisting steels and nickel alloys | | **UNS Designation** | **N08801** | Unified Numbering System identifier | | **Werkstoff Number** | **1.4875** | German material identification number | | **Pipe & Tube** | **ASTM B163 / B407 / B517** | Standards for seamless and welded tube and pipe | --- **Disclaimer:** The information provided here is for reference purposes. Material properties can vary based on manufacturing process, heat treatment, and product form. For critical applications, always consult the official material data sheets and the relevant ASTM, ASME, or other applicable standards.

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 3008 gallon liquid totes Special package is available on request.