Alloy 901,Nimonic 901 Wire,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 Wire / 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 **Wire** product form, which is manufactured through precision drawing processes to achieve specific diameters and enhanced mechanical properties. Nimonic 901 Wire combines excellent high-temperature performance with good formability, making it suitable for fasteners, springs, welding consumables, and other critical components operating at temperatures up to 590°C (1100°F). --- #### **2. Key Characteristics** * **Excellent High-Temperature Strength:** Maintains mechanical properties at temperatures up to 590°C (1100°F) * **Outstanding Creep Resistance:** Superior long-term creep rupture strength under sustained loading * **Good Fatigue Resistance:** Excellent resistance to mechanical fatigue * **Age-Hardenable:** Achieves high strength through precipitation hardening heat treatment * **Excellent Formability:** Can be cold formed and shaped in annealed condition * **Good Spring Properties:** Suitable for spring applications in high-temperature environments * **Consistent Quality:** Uniform properties throughout wire 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 | 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)** | Condition | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HV) | | :--- | :--- | :--- | :--- | :--- | | **Annealed** | 700-850 | 550-700 | 20-30 | 250-320 | | **Hard Drawn** | 950-1150 | 850-1050 | 8-15 | 320-400 | | **Spring Temper** | 1150-1350 | 1050-1250 | 5-10 | 380-450 | | **Aged Condition** | 1200-1400 | 1000-1200 | 10-18 | 350-420 | --- #### **6. International Standards & Specifications** **Wire Product Standards:** * **ASTM B637:** Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock * **AMS 5660:** Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings * **ASTM B425:** Nickel-Iron-Chromium-Molybdenum-Copper Alloy Bar and Wire **Welding Wire Standards:** * **AWS A5.14:** ERNiFeCr-1 * **ISO 18274:** S Ni 8065 **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **JIS:** NCF 901 --- #### **7. Product Specifications & Availability** **Wire Specifications:** * **Diameter Range:** 0.5 mm to 10.0 mm (0.020" to 0.400") * **Tolerance:** ±0.02 mm for diameters up to 2.0 mm, ±0.03 mm for larger diameters * **Surface Finish:** Bright, cleaned, or special coatings * **Packaging:** Spools, coils, or straight lengths **Available Conditions:** * **Annealed:** Soft condition for forming and machining * **Hard Drawn:** Increased strength for fasteners * **Spring Temper:** Maximum strength for spring applications * **Solution Treated & Aged:** Fully heat treated condition **Special Wire Types:** * **Welding Wire:** ERNiFeCr-1 classification * **Spring Wire:** High tensile strength with good fatigue resistance * **Fastener Wire:** Cold heading quality * **Electrical Resistance Wire:** For heating elements --- #### **8. Applications** **Aerospace Industry:** * Gas turbine engine fasteners * High-temperature spring components * Engine control system components * Aircraft structural fasteners **Power Generation:** * Gas turbine component fasteners * High-temperature spring washers * Turbine blade retention wires * Boiler and heat exchanger components **Industrial Applications:** * High-temperature bolts and studs * Spring components for elevated temperature service * Heat treatment fixture components * Nuclear reactor components **Fastener Industry:** * High-temperature bolts and nuts * Specialized screws and studs * Marine and chemical processing fasteners * Critical service fasteners **Other Applications:** * Welding consumables for similar alloys * Wire mesh for high-temperature filtration * Electrical resistance heating elements * Instrumentation and sensor components --- #### **9. Processing & Fabrication** **Wire Drawing:** * Multiple pass drawing with intermediate annealing * Controlled reduction per pass * Use of appropriate lubricants and die materials * Regular annealing to maintain workability **Forming Operations:** * **Cold Heading:** Suitable for fastener manufacturing * **Spring Coiling:** Various coil configurations possible * **Wire Weaving:** For mesh and filter applications * **Bending and Forming:** Good formability in annealed condition **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 **Welding Characteristics:** * **Weldability:** Fair - requires special procedures * **Recommended Process:** GTAW with pulsed current * **Filler Metal:** AWS A5.14 ERNiFeCr-1 * **Pre/Post Weld Heat Treatment:** Required --- #### **10. Quality Assurance & Testing** **Dimensional Control:** * Diameter verification at multiple points * Ovality and surface quality inspection * Length measurement and coil integrity * Surface defect detection **Mechanical Testing:** * Tensile testing per ASTM E8 * Hardness surveys * Wrap tests for ductility assessment * Torsion tests for specific applications **Non-Destructive Testing:** * Eddy Current Testing for surface defects * Visual inspection per applicable standards * Ultrasonic testing for larger diameters **Certification & Documentation:** * Full traceability with material certifications * Heat treatment records * Test reports and certificates of conformity * Mill Test Reports (MTR) with complete chemical analysis --- **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 wire 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 1961 gallon liquid totes Special package is available on request.