Alloy 901,Nimonic 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 / Nimonic 901 Plate / UNS N09901** --- #### **1. Overview** **Alloy 901** (commercially known as **Nimonic® 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. Nimonic 901 Plate offers outstanding performance at temperatures up to 590°C (1100°F), maintaining structural integrity under extreme thermal and mechanical stresses. --- #### **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 --- #### **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 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 * **Creep Rupture Strength (540°C/1000°F):** 520 MPa (75 ksi) for 1000 hours --- #### **6. International Standards & Specifications** **Plate Product Standards:** * **ASTM B637:** Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock * **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 **Material Specifications:** * **AMS 5660:** Nickel Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings * **ASTM B409:** Nickel-Iron-Chromium Alloy Plate, Sheet, and Strip **Dimensional Standards:** * **ASTM B906:** Covers dimensional tolerances for plate products * **ASME SB637:** Nuclear and high-temperature service applications **International Equivalents:** * **UNS:** N09901 * **EN:** NiCr13Mo6Fe6Ti * **DIN:** 2.4662 * **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 **Surface Finish:** * **Hot Rolled Pickled:** HRAP condition * **Machined:** Surface machining available * **Ground:** Precision ground surfaces --- #### **8. Applications** **Aerospace Industry:** * Gas turbine engine components * Afterburner structural components * Engine mount supports and brackets * High-temperature structural panels **Power Generation:** * Gas turbine casings and supports * Steam turbine components * Heat exchanger plates and headers * High-temperature furnace components **Industrial Applications:** * High-temperature pressure vessels * Chemical processing equipment * Heat treatment fixtures and trays * Nuclear reactor components **Specific Component Applications:** * Turbine engine casings * Combustion chamber components * High-temperature brackets and supports * Thermal barrier system substrates --- #### **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) * **Coolant:** High-pressure coolant essential **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** * **Certification:** Full traceability with material certifications * **Non-Destructive Testing:** - Ultrasonic Testing per ASTM A388 - Liquid Penetrant Testing per ASTM E165 - Magnetic Particle Testing (if applicable) * **Destructive Testing:** - Tensile tests at room and elevated temperatures - Hardness surveys across plate surface - Impact testing and microstructural analysis * **Dimensional Inspection:** - Thickness verification at multiple points - Flatness and straightness checks - Surface quality evaluation --- **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 1954 gallon liquid totes Special package is available on request.