Alloy R41,Rene 41 Rod,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 Rod (UNS N07041) - Technical Datasheet** #### **1. Overview** Alloy R-41 (René 41) Rod is a high-strength, precipitation-hardenable nickel-chromium alloy supplied in round bar form. As one of the strongest commercially available nickel-based superalloys, René 41 Rod maintains exceptional mechanical properties at temperatures up to 980°C (1800°F), making it ideal for machining critical components in aerospace and gas turbine 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 | | **Modulus of Elasticity** | 221 GPa | 32 × 10⁶ psi | | **Electrical Resistivity** | 1.30 μΩ·m | - | #### **4. Mechanical Properties (Rod - Aged Condition)** **Room Temperature Properties:** - **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 Properties (870°C/1600°F):** - **Tensile Strength:** 620-690 MPa (90-100 ksi) - **Yield Strength:** 480-550 MPa (70-80 ksi) - **Stress Rupture (100h life):** 170 MPa (25 ksi) #### **5. René 41 Rod Product Characteristics** **Available Conditions:** - **Solution Annealed:** Suitable for subsequent machining and forming - **Solution Treated & Aged:** Ready-for-use condition - **Hot Finished:** As-forged or hot-rolled condition - **Centerless Ground:** Precision ground to tight tolerances **Standard Sizes:** - **Diameter Range:** 3 mm to 300 mm (0.125" to 12") - **Lengths:** Standard random lengths 3-6 meters, cut lengths available - **Tolerances:** Standard per AMS 2249, special tolerances available **Key Features:** - Excellent machinability in annealed condition - Consistent microstructure throughout cross-section - Suitable for high-speed machining operations - Can be welded using proper procedures #### **6. Applications** **Aerospace Components:** - **Turbine Engine Parts:** Disks, shafts, and rotating components - **Afterburner Parts:** Nozzle segments, seals, and supports - **Rocket Motor Components:** Nozzle inserts, mounting rings - **Fasteners:** High-temperature bolts, studs, and pins **Industrial Applications:** - **Gas Turbine Components:** Buckets, blades, and shafts - **Nuclear Reactor Parts:** Control rod mechanisms, fasteners - **Hot Work Tools:** Extrusion dies, hot forming tools - **Test Equipment:** High-temperature fixtures and supports #### **7. Machining & Fabrication** **Machining Guidelines:** - **Annealed Condition:** Recommended for heavy machining - **Tool Material:** Carbide or premium high-speed steel - **Cutting Speed:** 30-50% slower than stainless steels - **Coolant:** Heavy-duty soluble oil or synthetic coolants - **Tool Geometry:** Positive rake angles, sharp cutting edges **Heat Treatment:** - **Solution Treatment:** 1065-1080°C (1950-1975°F), rapid cool - **Aging:** 760°C (1400°F) for 16 hours, air cool - **Stress Relieving:** 870°C (1600°F) for 1-2 hours, air cool #### **8. International Standards** **Aerospace Specifications:** - **AMS 5712:** Bars, Forgings, and Rings (Solution Heat Treated and Aged) - **AMS 5713:** Bars and Forgings (Annealed) **ASTM/ASME Standards:** - **ASTM B637/ASME SB637:** Bar, Forgings, and Forging Stock **International Equivalents:** - **Europe:** DIN 2.4972 - **France:** NC15K19DAT - **United Kingdom:** HR 506 - **ISO 9724:** Nickel alloy bars for high-temperature service **Quality Standards:** - **AMS 2249:** Tolerances for Corrosion and Heat Resistant Alloys - **AMS 2355:** Quality Assurance for Premium Aircraft Alloys #### **9. Quality Assurance** **Testing Requirements:** - Chemical analysis certification - Mechanical testing per applicable specification - Macroetch and microcleanliness evaluation - Ultrasonic testing available for critical applications - Grain size verification **Certification:** - Mill test certificates to EN 10204 3.1/3.2 - Original material certifications - Full traceability to melt heat number --- **Note:** René 41 Rod is particularly valued for its consistent properties throughout the cross-section, making it ideal for machining symmetrical components. The material requires careful attention to heat treatment parameters to achieve optimal properties. Post-machining stress relief is recommended for complex components to minimize residual stresses.

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 2314 gallon liquid totes Special package is available on request.