Alloy 901,Incoloy 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 / Incoloy 901 Strip / UNS N09901** --- #### **1. Overview** **Alloy 901** (commercially referred to as **Incoloy® 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. Incoloy 901 Strip combines excellent high-temperature properties with superior formability and precise dimensional control, making it ideal for precision components, electrical applications, and specialized industrial uses where both high-temperature performance and specific dimensional requirements are critical. --- #### **2. Key Characteristics** * **Excellent High-Temperature Strength:** Maintains mechanical properties at temperatures up to 590°C (1100°F) * **Superior Creep Resistance:** Exceptional long-term dimensional stability under load * **Outstanding Thermal Fatigue Resistance:** Excellent resistance to thermal cycling * **Age-Hardenable:** Achieves optimal 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 * **Precision Thickness Control:** Consistent dimensional accuracy and surface quality * **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 | Provides oxidation and corrosion resistance | | **Iron (Fe)** | Balance | - | Base element, provides cost-effective 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 | Metric Value | Imperial 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 | 0.105 BTU/lb·°F | | **Thermal Conductivity** | 12.5 W/m·K | 72.2 BTU·in/hr·ft²·°F | | **Mean Coefficient of Thermal Expansion** | 13.5 μm/m·K | 7.5 μin/in·°F | | **Electrical Resistivity** | 1.18 μΩ·m | 708 ohm·circ mil/ft | | **Modulus of Elasticity** | 214 GPa | 31.0×10⁶ 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 | | **Aged Condition** | 1200-1400 | 1000-1200 | 10-18 | 350-420 | --- #### **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 **Dimensional Standards:** * **ASTM B906:** Covers dimensional tolerances for strip products * **Thickness Tolerance:** Typically ±0.005mm to ±0.02mm **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **JIS:** NCF 901 * **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 * **Width Tolerance:** Typically ±0.1mm to ±0.5mm **Available Conditions:** * **Solution Annealed:** Optimal for forming and machining * **Hard Temper:** For applications requiring higher strength * **Spring Temper:** Maximum strength and spring properties * **Solution Treated & Aged:** Fully heat treated condition * **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 * Aircraft engine control system parts **Electrical & Electronic:** * High-temperature electrical contacts and springs * Spring contacts for elevated temperature service * Battery and fuel cell components * Semiconductor processing equipment parts * Electrical resistance heating elements **Industrial Components:** * High-temperature springs and spring washers * Diaphragms and bellows for corrosive service * Precision stamping components * Heat treatment fixture components * Turbine seal strips and sealing elements **Power Generation:** * Turbine seal strips and components * High-temperature spring elements * 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 * **Aged Condition:** Critical high-temperature components --- #### **9. Processing & Fabrication** **Forming Operations:** * **Blank and Pierce:** Suitable for precision blanking operations * **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 * **Progressive Die Forming:** Ideal for high-volume production **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 * **Mechanical Fastening:** Riveting, clinching --- #### **10. Quality Assurance & Testing** **Dimensional Control:** * Thickness monitoring at multiple points across strip width * Width and edge condition inspection * Coil flatness and surface quality assessment * Camber and straightness verification **Mechanical Testing:** * Tensile testing per ASTM E8 * Hardness surveys across strip width * Springback and formability tests * Microstructural examination **Non-Destructive Testing:** * **Eddy Current Testing:** For surface defects and consistency * **Visual Inspection:** Per ASTM A480 * **Surface Roughness Measurement:** For critical applications **Certification & Documentation:** * Full traceability with material certifications * Heat treatment records and charts * Test reports and certificates of conformity * Mill Test Reports (MTR) with complete chemical analysis * Dimensional inspection reports --- **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 1969 gallon liquid totes Special package is available on request.