Alloy R41,Rene 41 Plate,UNS N07041,E FORU

British Specs:，American Specs: AMS 5545 Sheet, Strip and Plate AMS 5712 Bars and Forgings AMS 5713 Bars and Forgings AMS 5800 Welding Wire，German Specs:

### **Alloy R-41 / René 41 Plate (UNS N07041) - Technical Datasheet** #### **1. Overview** Alloy R-41 (René 41) Plate is the flat-rolled product form of this premium precipitation-hardenable nickel-based superalloy. Representing one of the highest strength commercially available superalloys, René 41 Plate maintains exceptional mechanical properties at temperatures up to 980°C (1800°F), making it ideal for structural components in aerospace, gas turbine, and high-temperature processing applications. #### **2. Chemical Composition** | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 18.00 - 20.00 | | **Cobalt (Co)** | 10.00 - 12.00 | | **Molybdenum (Mo)** | 9.00 - 10.50 | | **Aluminum (Al)** | 1.40 - 1.80 | | **Titanium (Ti)** | 3.00 - 3.50 | | **Iron (Fe)** | ≤ 2.00 | | **Carbon (C)** | 0.06 - 0.12 | | **Boron (B)** | 0.003 - 0.010 | | **Silicon (Si)** | ≤ 0.50 | | **Manganese (Mn)** | ≤ 0.50 | | **Copper (Cu)** | ≤ 0.50 | | **Sulfur (S)** | ≤ 0.015 | #### **3. Physical Properties** | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 8.27 g/cm³ | 0.299 lb/in³ | | **Melting Range** | 1316-1371 °C | 2400-2500 °F | | **Thermal Expansion (20-100°C)** | 12.6 μm/m·°C | 7.0 μin/in·°F | | **Thermal Conductivity** | 12.5 W/m·K | 86.6 BTU·in/hr·ft²·°F | | **Specific Heat Capacity** | 440 J/kg·K | 0.105 BTU/lb·°F | | **Modulus of Elasticity** | 221 GPa | 32 × 10⁶ psi | | **Electrical Resistivity** | 1.30 μΩ·m | - | #### **4. Mechanical Properties** **Room Temperature (Aged Condition):** - **Tensile Strength:** 1310-1520 MPa (190-220 ksi) - **Yield Strength (0.2% Offset):** 1030-1240 MPa (150-180 ksi) - **Elongation:** 8-15% - **Reduction of Area:** 10-20% - **Hardness:** 36-42 HRC **Elevated Temperature (870°C/1600°F):** - **Tensile Strength:** 620-690 MPa (90-100 ksi) - **Yield Strength:** 480-550 MPa (70-80 ksi) - **Creep Rupture Strength (100h):** 170 MPa (25 ksi) #### **5. René 41 Plate Product Specifications** **Available Forms:** - **Hot Rolled Plate:** As-rolled condition for further processing - **Solution Annealed Plate:** Optimal for fabrication and forming - **Solution Treated & Aged Plate:** Ready for service condition - **Precision Ground Plate:** Machined to tight thickness tolerances **Standard Sizes:** - **Thickness Range:** 3 mm to 100 mm (0.125" to 4") - **Width Range:** 500 mm to 1500 mm (20" to 60") - **Length Range:** 1000 mm to 3000 mm (40" to 120") - **Custom sizes available upon request** **Tolerances:** - **Thickness Tolerance:** ±5% standard, ±2.5% precision grade - **Flatness:** 3mm per meter standard, 1mm per meter premium - **Surface Finish:** 3.2 μm Ra as-rolled, 1.6 μm Ra ground finish #### **6. Applications** **Aerospace & Defense:** - **Turbine Engine Components:** Casings, mounts, and support structures - **Rocket Motor Components:** Nozzle supports and structural panels - **Aircraft Structures:** High-temperature mounting brackets and frames - **Afterburner Components:** Liners and structural supports **Power Generation:** - **Gas Turbine Components:** Casing sections and mounting plates - **Heat Exchanger Parts:** Header plates and support structures - **Combustion Chamber Components:** Liners and support plates **Industrial Applications:** - **Nuclear Components:** Core support plates and structural members - **Hot Work Tooling:** Die plates and forming tools - **Chemical Processing:** Reactor components and high-temperature fixtures - **Test Equipment:** High-temperature test fixtures and rig components #### **7. Fabrication & Processing** **Machining Guidelines:** - **Tool Material:** Carbide tools with positive rake angles recommended - **Cutting Speed:** 10-20 m/min for roughing, 15-25 m/min for finishing - **Feed Rates:** Moderate feeds with adequate coolant flow - **Coolant Requirements:** Heavy-duty soluble oils or synthetic coolants - **Tool Geometry:** Sharp cutting edges with adequate clearance angles **Forming Operations:** - **Hot Forming Temperature:** 1050-1150°C (1920-2100°F) - **Cold Forming:** Limited to mild forming in annealed condition - **Annealing Temperature:** 1065-1080°C (1950-1975°F) for 1-2 hours **Welding Procedures:** - **Processes:** GTAW (TIG) preferred for critical applications - **Filler Metal:** René 41 welding wire (AMS 5790) - **Preheat Temperature:** 200-300°C (400-600°F) - **Post-Weld Heat Treatment:** Required to prevent strain-age cracking #### **8. Heat Treatment** **Standard Heat Treatment:** 1. **Solution Treatment:** 1065-1080°C (1950-1975°F) for 1-2 hours, rapid cool 2. **Aging Treatment:** 760°C (1400°F) for 16 hours, air cool **Alternative Aging:** - 900°C (1650°F) for 4 hours, then 760°C (1400°F) for 16 hours **Stress Relieving:** - 870°C (1600°F) for 1-2 hours, air cool #### **9. International Standards** **Aerospace Specifications:** - **AMS 5545:** Sheet, Strip, and Plate - **AMS 5712:** Bars, Forgings, and Rings (for reference) **ASTM/ASME Standards:** - **ASTM B637/ASME SB637:** Bar, Forgings, and Forging Stock **International Equivalents:** - **Europe:** DIN 2.4972 - **France:** NC15K19DAT - **United Kingdom:** HR 506 - **Japan:** JIS NR 401 **Quality Standards:** - **AMS 2249:** Tolerances for Corrosion and Heat Resistant Alloys - **AMS 2355:** Quality Assurance for Premium Aircraft Alloys - **MIL-STD-2154:** Inspection, Ultrasonic, for Wrought Metals #### **10. Quality Assurance** **Testing Requirements:** - Chemical analysis with full traceability to melt heat - Mechanical testing including tensile and hardness - Ultrasonic testing per applicable specifications - Macroetch and microcleanliness evaluation - Grain size verification per ASTM E112 **Certification:** - Mill test certificates to EN 10204 3.1/3.2 - Original material certifications - Full traceability to melt heat number - NDE reports as specified by customer requirements --- **Note:** René 41 Plate offers exceptional high-temperature strength but requires careful handling during fabrication due to sensitivity to strain age cracking. Proper thermal processing and machining techniques are essential to achieve optimal performance. Consultation with materials engineering is recommended for specific application requirements and fabrication procedures.

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 2318 gallon liquid totes Special package is available on request.