Alloy 901,Nimonic 901 Strip,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 Strip / UNS N09901** --- #### **1. Overview** **Alloy 901** (commercially known as **Nimonic® 901**) is a nickel-iron-chromium precipitation-hardening superalloy specifically engineered for high-temperature applications requiring exceptional creep resistance and mechanical strength. This datasheet focuses on the **Strip** product form, characterized by its thin, narrow configuration typically supplied in coiled form. Nimonic 901 Strip combines excellent high-temperature properties with good formability, making it ideal for precision components, electrical applications, and specialized industrial uses where both corrosion resistance and specific dimensional requirements are critical in high-temperature environments up to 590°C (1100°F). --- #### **2. Key Characteristics** * **Excellent High-Temperature Strength:** Maintains mechanical properties at temperatures up to 590°C (1100°F) * **Superior Creep Resistance:** Exceptional long-term creep rupture strength under sustained loading * **Outstanding Thermal Fatigue Resistance:** Excellent resistance to thermal cycling * **Age-Hardenable:** Achieves high strength through precipitation hardening heat treatment * **Excellent Formability:** Can be precision formed and shaped in annealed condition * **Good Spring Properties:** Suitable for spring applications in high-temperature environments * **Consistent Mechanical Properties:** Uniform characteristics throughout the strip length --- #### **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 | Confers oxidation and corrosion resistance | | **Iron (Fe)** | Balance | - | Base element, enhances solid solution strengthening | | **Molybdenum (Mo)** | 5.0 | 6.5 | Solid solution strengthener, improves high-temperature strength | | **Titanium (Ti)** | 2.8 | 3.1 | Primary precipitation hardening element (forms γ' phase) | | **Aluminum (Al)** | - | 0.30 | Secondary precipitation hardener | | **Carbon (C)** | 0.10 | 0.20 | Forms carbides for grain boundary stabilization | | **Boron (B)** | 0.01 | 0.02 | Enhances creep strength and grain boundary cohesion | | **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 for Strip Products)** | Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HV) | | :--- | :--- | :--- | :--- | :--- | | **Annealed** | 700-850 | 550-700 | 20-30 | 250-320 | | **Hard Temper** | 950-1150 | 850-1050 | 8-15 | 320-400 | | **Spring Temper** | 1150-1350 | 1050-1250 | 5-10 | 380-450 | --- #### **6. International Standards & Specifications** **Strip Product 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 **Material Specifications:** * **ASTM B637:** Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock * **AMS 5660:** Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **ISO:** 6207 (Nickel alloy strip) --- #### **7. Product Specifications & Availability** **Strip Specifications:** * **Thickness Range:** 0.05 mm to 2.0 mm (0.002" to 0.080") * **Width Range:** 10 mm to 300 mm (0.4" to 12") * **Coil Weight:** 50 kg to 500 kg (110 lbs to 1100 lbs) * **Tolerance:** Thickness ±0.005mm to ±0.02mm depending on thickness **Available Conditions:** * **Solution Annealed:** Optimal for forming and machining * **Hard Temper:** For applications requiring higher strength * **Spring Temper:** Maximum strength and spring properties * **Custom Tempers:** Quarter-hard, half-hard available **Surface Finish:** * **Bright Annealed (BA):** Smooth, reflective surface * **Cold Rolled:** Standard mill finish * **Polished:** Special surface requirements * **Coated:** Protective coatings available --- #### **8. Applications** **Aerospace Industry:** * Gas turbine engine seals and gaskets * High-temperature spring components * Instrumentation and sensor elements * Thermal protection system components **Electrical & Electronic:** * High-temperature electrical contacts * Spring contacts for elevated temperature service * Battery and fuel cell components * Semiconductor processing equipment **Industrial Components:** * High-temperature springs * Diaphragms and bellows * Precision stamping components * Heat treatment fixture components **Power Generation:** * Turbine seal strips * High-temperature spring washers * Instrumentation components * Thermal management system parts **Specific Applications:** * **Annealed Strip:** Formed components, deep drawn parts * **Hard Temper:** Structural components, fasteners * **Spring Temper:** High-temperature springs, clip fasteners --- #### **9. Processing & Fabrication** **Forming Operations:** * **Blank and Pierce:** Suitable for precision blanking * **Bending:** Excellent bend capability in annealed condition * **Deep Drawing:** Good deep draw characteristics * **Stamping:** Can be stamped into complex shapes * **Roll Forming:** Suitable for continuous forming operations **Heat Treatment:** * **Solution Treatment:** 1095-1120°C (2000-2050°F), rapid cooling * **Aging Treatment:** - Primary: 775-800°C (1425-1475°F) for 4 hours, air cool - Secondary: 700-730°C (1290-1350°F) for 24 hours, air cool * **Stress Relieving:** 650-675°C (1200-1250°F) for 1-2 hours **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 --- #### **10. Quality Assurance & Testing** * **Certification:** Full traceability with material certifications * **Dimensional Control:** - Thickness monitoring at multiple points - Width and edge condition inspection - Coil flatness and surface quality * **Mechanical Testing:** - Tensile testing per ASTM E8 - Hardness surveys - Springback and formability tests * **Non-Destructive Testing:** - Eddy Current Testing for surface defects - Visual inspection per ASTM A480 * **Microstructural Examination:** - Grain size measurement - Phase distribution analysis - Surface quality assessment --- **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 strip 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 1956 gallon liquid totes Special package is available on request.