Alloy R41,Udimet alloy R41 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:

### **Technical Data Sheet: Udimet Alloy R41 Rod (UNS N07041)** **Udimet Alloy R41 Rod** (UNS N07041) is a premium, precipitation-hardenable nickel-chromium-cobalt superalloy supplied in the form of round bars or rods. This product form is specifically engineered for machining into high-strength components that must perform under extreme mechanical stress and temperatures up to 1800°F (982°C). The "Udimet" name signifies its lineage from a renowned family of high-performance alloys, with R41 being one of the strongest, capable of being strengthened through a precise heat treatment process that precipitates a high volume of the gamma prime [γ'] phase. --- ### **1. Chemical Composition** The chemical composition of Udimet R41 rod is tightly controlled to ensure consistent performance and machinability in the annealed condition, followed by high strength after aging. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 18.00 - 20.00 | | **Cobalt (Co)** | 10.00 - 12.00 | | **Molybdenum (Mo)** | 9.00 - 10.50 | | **Titanium (Ti)** | 3.00 - 3.50 | | **Aluminum (Al)** | 1.40 - 1.80 | | **Iron (Fe)** | 5.00 max | | **Silicon (Si)** | 0.50 max | | **Manganese (Mn)** | 0.50 max | | **Carbon (C)** | 0.06 - 0.12 | | **Boron (B)** | 0.003 - 0.010 | | **Copper (Cu)** | 0.50 max | * **Metallurgical Notes:** * **Aluminum & Titanium:** The primary formers of the strengthening γ' phase (Ni₃(Al, Ti)). * **Chromium:** Imparts exceptional oxidation and hot corrosion resistance. * **Molybdenum & Cobalt:** Provide solid solution strengthening and enhance microstructural stability at high temperatures. --- ### **2. Physical Properties** The following are typical physical properties for R41 rod in the solution-annealed condition. | Property | Value | | :--- | :--- | | **Density** | 0.298 lb/in³ (8.25 g/cm³) | | **Melting Range** | 2410 - 2570°F (1320 - 1410°C) | | **Electrical Resistivity** | 48.6 μΩ·in at 70°F (1.23 μΩ·m at 21°C) | | **Thermal Conductivity** | 74.0 Btu·in/(hr·ft²·°F) at 70°F (10.7 W/m·K at 21°C) | | **Mean Coefficient of Thermal Expansion** | 7.5 x 10⁻⁶ in/in/°F (70 - 1200°F)
13.5 x 10⁻⁶ in/in/°F (20 - 650°C) | | **Modulus of Elasticity (E)** | 31.4 x 10⁶ psi (216 GPa) | --- ### **3. Mechanical Properties** Rod is typically supplied in the solution-annealed condition to facilitate machining. Final properties are achieved after a full aging heat treatment by the manufacturer. **Typical Room-Temperature Properties for Heat-Treated Rod:** | Condition | **Tensile Strength** | **Yield Strength (0.2% Offset)** | **Elongation (%)** | | :--- | :--- | :--- | :--- | | **Solution Annealed & Aged** | 180 - 200 ksi
(1240 - 1380 MPa) | 150 - 165 ksi
(1035 - 1140 MPa) | 8 - 15% | *The rod product form exhibits excellent strength retention, creep resistance, and fatigue strength at elevated temperatures.* --- ### **4. Product Applications** Udimet R41 rod is the starting material for numerous critical, high-stress components, primarily in the aerospace industry. * **Aerospace Jet Engines / Gas Turbines:** * **Turbine Blades and Buckets:** Machined from rod for high-temperature stages. * **Fasteners:** High-strength bolts, studs, and pins. * **Shafts and Spindles:** For engine transmission systems. * **Discs and Hubs:** Often forged from rod stock for turbine rotors. * **Valve Components:** For high-temperature environments. * **Nuclear Reactor Components:** Used for control rod parts and other high-strength internals. * **High-Performance Automotive:** Turbocharger turbines and racing engine components. --- ### **5. International Standards** Udimet R41 rod (bar) conforms to several key international standards that define its chemical, mechanical, and dimensional requirements. | Standard Organization | Standard Number | Title / Description | | :--- | :--- | :--- | | **ASTM International** | **ASTM B637** | *Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service* (The primary ASTM standard for rod/bar). | | **Aerospace Material Spec. (AMS)** | **AMS 5707** | *Bars, Forgings, and Rings, Nickel Alloy, Corrosion and Heat-Resistant, 19Cr - 11Co - 10Mo - 3.1Ti - 1.6Al, Consumable Electrode Melted, Solution Heat Treated, Precipitation Hardenable* | | **Aerospace Material Spec. (AMS)** | **AMS 5712** | *Forgings and Rings, Nickel Alloy, Corrosion and Heat-Resistant, 19Cr - 11Co - 10Mo - 3.1Ti - 1.6Al, Solution Heat Treated, Precipitation Hardenable* | | **UNS** | **N07041** | Unified Numbering System designation. | | **Werkstoff Nr.** | **2.4972** | Common German material number. | --- ### **Summary** **Udimet Alloy R41 Rod (UNS N07041)** is a high-performance nickel-based superalloy product form designed for machining and forging into the most critically stressed components in high-temperature environments. Its exceptional strength, derived from **gamma prime precipitation hardening**, makes it ideal for aerospace applications like **turbine blades and fasteners**. Conformance to standards like **ASTM B637** and **AMS 5707** guarantees the material's quality, consistency, and performance, making it a trusted choice for advanced engineering applications.

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 2327 gallon liquid totes Special package is available on request.