Alloy 901,Incoloy 901 Plate,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 Plate / UNS N09901** --- #### **1. Overview** **Alloy 901** (commercially referred to as **Incoloy® 901**) is a nickel-iron-chromium precipitation-hardening superalloy specifically designed for high-temperature applications requiring exceptional creep resistance and mechanical strength. This datasheet focuses on the **Plate** product form, which serves as fundamental material for fabricating high-temperature components in aerospace, power generation, and industrial applications. Incoloy 901 Plate offers outstanding performance at temperatures up to 590°C (1100°F), maintaining structural integrity under extreme thermal and mechanical stresses, and provides an optimal balance between high-temperature performance and cost-effectiveness. --- #### **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 and thermal shock * **Age-Hardenable:** Achieves optimal strength through precipitation hardening heat treatment * **Good Oxidation Resistance:** Suitable for continuous high-temperature service * **Excellent Structural Stability:** Maintains dimensional stability under thermal cycling * **Good Weldability and Fabricability:** Can be welded and formed using proper techniques --- #### **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 Aged Condition - Plate)** * **Tensile Strength:** 1200-1350 MPa (174-196 ksi) * **Yield Strength (0.2% Offset):** 1000-1150 MPa (145-167 ksi) * **Elongation:** 10-18% * **Reduction of Area:** 12-20% * **Hardness:** HB 350-410 * **Impact Strength:** 35-55 J (26-41 ft-lb) * **Creep Rupture Strength (540°C/1000°F):** 520 MPa (75 ksi) for 1000 hours --- #### **6. International Standards & Specifications** **Plate 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 plate products * **ASME SB409:** Nuclear and high-temperature service applications **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **JIS:** NCF 901 * **ISO:** 6207 (Nickel alloy plate) --- #### **7. Product Specifications & Availability** **Plate Specifications:** * **Thickness Range:** 5 mm to 150 mm (0.2" to 6") * **Width Range:** 1000 mm to 2000 mm (40" to 80") * **Length Range:** 2000 mm to 6000 mm (80" to 240") * **Tolerance:** Thickness ±5%, Width/Length ±10 mm **Available Conditions:** * **Solution Annealed:** 1095-1120°C (2000-2050°F) * **Solution Treated & Aged:** Fully heat treated ready for service * **Hot Rolled:** As-rolled condition for further processing * **Annealed and Pickled:** Clean surface condition **Surface Finish:** * **Hot Rolled Pickled (HRAP):** Standard mill finish * **Machined:** Surface machining available * **Ground:** Precision ground surfaces * **Polished:** Special surface finishes available --- #### **8. Applications** **Aerospace Industry:** * Gas turbine engine components and casings * Afterburner structural components * Engine mount supports and brackets * High-temperature structural panels and heat shields **Power Generation:** * Gas turbine casings and supports * Steam turbine components and housings * Heat exchanger plates and headers * High-temperature furnace components **Oil & Gas Industry:** * Pressure vessel components * Wellhead equipment plates * High-temperature reactor sections * Offshore platform components **Industrial Applications:** * High-temperature pressure vessels * Chemical processing equipment * Heat treatment fixtures and trays * Nuclear reactor structural components **Specific Component Applications:** * **Structural Components:** Frames, brackets, and supports * **Pressure Parts:** Vessel walls and heads * **Heat Resistant Parts:** Furnace components and heat treats fixtures * **Structural Panels:** High-temperature enclosures and covers --- #### **9. Processing & Fabrication** **Machining Guidelines:** * **Condition:** Machine in solution-treated condition * **Tool Material:** Premium carbide tools recommended * **Cutting Speed:** 10-20 m/min (30-65 SFM) * **Feed Rate:** 0.1-0.3 mm/rev (0.004-0.012 IPR) * **Depth of Cut:** 2-5 mm (0.080-0.200 inches) * **Coolant:** High-pressure coolant essential **Forming Operations:** * **Cold Forming:** Possible with proper tooling design * **Hot Forming:** Recommended for complex shapes * **Press Brake Forming:** Suitable for plate forming * **Roll Forming:** For cylindrical sections **Welding Procedures:** * **Weldability:** Fair - requires special precautions * **Recommended Process:** GTAW (TIG) with pulsed current * **Filler Metal:** AWS A5.14 ERNiFeCr-1 * **Preheat Temperature:** 200-300°C (400-570°F) * **Post-Weld Heat Treatment:** Required to restore properties **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 --- #### **10. Quality Assurance & Testing** **Material Certification:** * Full traceability from melt to final product * Certified Mill Test Reports (CMTR) * Heat treatment charts and records * Chemical analysis certificates **Non-Destructive Testing:** * **Ultrasonic Testing (UT):** Per ASTM A388 for internal quality * **Liquid Penetrant Testing (PT):** Per ASTM E165 for surface defects * **Magnetic Particle Testing (MT):** Per ASTM E709 where applicable * **Radiographic Testing (RT):** For critical welded sections **Destructive Testing:** * **Tensile Testing:** At room and elevated temperatures * **Hardness Surveys:** Multiple locations across plate surface * **Impact Testing:** Charpy V-notch tests * **Microstructural Analysis:** Grain size and phase distribution **Dimensional Inspection:** * Thickness verification at multiple points * Flatness and straightness measurements * Surface quality assessment * Compliance with specified tolerances --- **Disclaimer:** This technical information is for reference purposes. For critical applications in aerospace, nuclear, or high-temperature structural 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 plate 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 1967 gallon liquid totes Special package is available on request.