Alloy 901,Nimonic 901 Foil,Shim,UNS N09901,E FORU

British Specs:，American Specs:AMS 5830 Welding Wire AMS 5660 Bar and Forgings AMS 5661 Bar and Forgings，German Specs:WS 2.4662

### **Technical Datasheet: Alloy 901 / Nimonic 901 Foil & Shim / UNS N09901** --- #### **1. Overview** **Alloy 901** (commercially known as **Nimonic® 901**) is a nickel-iron-chromium precipitation-hardening superalloy designed for high-temperature applications requiring exceptional creep resistance and mechanical strength. This datasheet specifically addresses the **Foil** and **Shim** product forms, which are thin-gauge materials used for precision applications in extreme environments. Nimonic 901 Foil and Shim offer excellent high-temperature stability, oxidation resistance, and mechanical properties at temperatures up to 590°C (1100°F), making them ideal for critical spacing, sealing, and thermal management applications in aerospace, power generation, and industrial sectors. --- #### **2. Key Characteristics** * **Excellent High-Temperature Strength:** Maintains mechanical properties at temperatures up to 590°C (1100°F) * **Outstanding Creep Resistance:** Superior long-term dimensional stability under load * **Excellent Thermal Stability:** Minimal thermal expansion and distortion * **Good Oxidation Resistance:** Suitable for continuous high-temperature service * **Precision Thickness Control:** Consistent dimensional accuracy * **Age-Hardenable:** Can be heat treated for optimal properties * **Good Formability:** Can be shaped and formed in annealed condition --- #### **3. Chemical Composition (Weight %)** | Element | Minimum (%) | Maximum (%) | Key Function | | :--- | :--- | :--- | :--- | | **Nickel (Ni)** | 40.0 | 45.0 | Austenitic matrix base, provides high-temperature stability | | **Chromium (Cr)** | 11.0 | 14.0 | Provides oxidation and corrosion resistance | | **Iron (Fe)** | Balance | - | Base element, contributes to solid solution strengthening | | **Molybdenum (Mo)** | 5.0 | 6.5 | Solid solution strengthener, enhances high-temperature strength | | **Titanium (Ti)** | 2.8 | 3.1 | Primary precipitation hardening element (forms γ' phase) | | **Aluminum (Al)** | - | 0.30 | Secondary hardening element | | **Carbon (C)** | 0.10 | 0.20 | Forms carbides for grain boundary strengthening | | **Boron (B)** | 0.01 | 0.02 | Enhances creep strength and ductility | | **Manganese (Mn)** | - | 0.50 | - | | **Silicon (Si)** | - | 0.40 | - | | **Sulfur (S)** | - | 0.015 | - | | **Copper (Cu)** | - | 0.50 | - | --- #### **4. Physical Properties (Typical)** | Property | Value | | :--- | :--- | | **Density** | 8.21 g/cm³ (0.297 lb/in³) | | **Melting Range** | 1330 - 1360 °C (2425 - 2480 °F) | | **Specific Heat (20°C)** | 440 J/kg·K | | **Thermal Conductivity** | 12.5 W/m·K (at 100°C) | | **Mean Coefficient of Thermal Expansion** | 13.5 μm/m·K (20 - 100°C) | | **Electrical Resistivity** | 1.18 μΩ·m | | **Modulus of Elasticity** | 214 GPa (31.0 x 10⁶ psi) | --- #### **5. Mechanical Properties (Typical)** | Property | Foil (Annealed) | Shim (Hard Temper) | Shim (Aged) | | :--- | :--- | :--- | :--- | | **Tensile Strength** | 700-850 MPa | 950-1150 MPa | 1200-1350 MPa | | **Yield Strength** | 550-700 MPa | 850-1050 MPa | 1000-1150 MPa | | **Elongation** | 20-30% | 8-15% | 10-18% | | **Hardness** | HV 250-320 | HV 320-400 | HV 350-410 | | **Thickness Range** | 0.025-0.5 mm | 0.05-2.0 mm | 0.05-2.0 mm | --- #### **6. International Standards & Specifications** **Foil & Shim Standards:** * **AMS 5911:** Nickel Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate * **ASTM B906:** General Requirements for Flat-Rolled Nickel and Nickel Alloy Plate, Sheet, and Strip * **ASTM B409:** Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip **Dimensional Standards:** * **Thickness Range:** 0.025 mm to 2.0 mm (0.001" to 0.080") * **Width Range:** Up to 300 mm (12 inches) * **Tolerance Grades:** Precision tolerance per ASTM B906 **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **ISO:** 6207 (Nickel alloy strip) --- #### **7. Product Forms & Availability** **Foil Products:** * **Thickness:** 0.025 - 0.2 mm (0.001" - 0.008") * **Width:** Up to 300 mm (12 inches) * **Condition:** Annealed or solution treated * **Surface Finish:** Bright annealed, cold rolled * **Packaging:** Coils or flat sheets **Shim Products:** * **Thickness:** 0.05 - 2.0 mm (0.002" - 0.080") * **Width:** Up to 600 mm (24 inches) * **Condition:** Annealed, hard temper, or aged * **Forms:** Sheets, strips, custom-cut shapes * **Special Features:** Perforated, etched, or precision blanked --- #### **8. Applications** **Aerospace Industry:** * Gas turbine engine seals and gaskets * High-temperature shimming applications * Thermal barrier system components * Instrumentation and sensor mounting **Power Generation:** * Turbine casing seals and shims * High-temperature gaskets * Heat shield components * Alignment shims for hot sections **Industrial Applications:** * High-temperature furnace seals * Heat treatment fixture components * Precision spacing elements * Thermal management components **Electrical & Electronic:** * High-temperature electrical insulation * Thermal management substrates * Sensor mounting components * Specialized electrical contacts **Specific Applications:** * **Foil:** Wrapping, laminating, thermal barriers * **Shim:** Alignment, spacing, wear surfaces * **Custom Shapes:** Precision blanked components --- #### **9. Processing & Fabrication** **Forming Operations:** * **Blank and Pierce:** Suitable for precision blanking operations * **Bending:** Good bend capability in annealed condition * **Deep Drawing:** Can be deep drawn with proper tooling * **Stamping:** Suitable for precision stamping operations * **Heat Treatment:** Full solution and aging treatment possible **Joining Methods:** * **Resistance Welding:** Spot and seam welding * **GTAW:** Precision welding for critical applications * **Brazing:** Using nickel-based brazing alloys * **Adhesive Bonding:** For specific assembly requirements * **Mechanical Fastening:** Riveting, clinching **Heat Treatment:** * **Solution Treatment:** 1095-1120°C (2000-2050°F), rapid cooling * **Aging Treatment:** - Primary: 775-800°C (1425-1475°F) for 4 hours - Secondary: 700-730°C (1290-1350°F) for 24 hours * **Stress Relieving:** 650-675°C (1200-1250°F) for 1-2 hours --- #### **10. Quality Assurance & Testing** **Dimensional Control:** * Thickness monitoring at multiple points * Width and edge condition inspection * Surface quality assessment * Flatness and straightness verification **Mechanical Testing:** * Tensile testing per ASTM E8 * Hardness surveys * Springback and formability tests * Microstructural examination **Non-Destructive Testing:** * Visual inspection per ASTM A480 * Eddy Current Testing for surface defects * Dimensional verification per ASTM B906 **Certification:** * Full traceability with material certifications * Heat treatment records * Test reports and certificates of conformity * Mill Test Reports (MTR) --- **Disclaimer:** This technical information is for reference purposes. For critical applications in aerospace, nuclear, or high-temperature services, always consult the specific material certification and the latest version of applicable standards. Actual properties may vary depending on manufacturing processes, heat treatment, and specific product dimensions.

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 1960 gallon liquid totes Special package is available on request.