Alloy R41,Rene 41 Wire,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:

### **Product Introduction: Alloy R41 / Rene 41 Wire (UNS N07041)** **Alloy R41**, commercially known as **Rene 41**, is a high-strength, precipitation-hardenable nickel-chromium-cobalt superalloy. When supplied in the form of **Wire**, this alloy is engineered for critical applications requiring exceptional strength, fatigue resistance, and excellent oxidation resistance at temperatures up to 1800°F (980°C). Its outstanding properties are derived from a solution annealing treatment followed by an aging cycle that precipitates a high volume of the strengthening gamma prime [γ'] phase (Ni₃(Al, Ti)). **UNS N07041** is the Unified Numbering System designation that standardizes this specific alloy composition. --- ### **1. Chemical Composition** The typical chemical composition of Rene 41 (UNS N07041) wire is tightly controlled and conforms to the following range: | 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 | *Key Points:* * **Chromium** provides essential oxidation resistance. * **Molybdenum** contributes solid solution strengthening. * **Aluminum & Titanium** are the primary elements for forming the strengthening γ' phase during aging. --- ### **2. Physical Properties** The following are typical physical properties for Rene 41 in the solution-annealed condition. | Property | Value / Condition | | :--- | :--- | | **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** The mechanical properties of Rene 41 wire are highly dependent on its final heat treatment condition. Wire is often supplied in the solution-annealed form for subsequent fabrication and full heat treatment by the customer. **Typical Room-Temperature Properties for Heat-Treated Material:** | 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% | *Note: For specific applications like fasteners, the wire may be drawn to a specific temper to improve formability before a final age-hardening step.* --- ### **4. Product Applications** Rene 41 wire is utilized in applications that demand a combination of high strength, corrosion/oxidation resistance, and the formability of a wire product. * **Aerospace Fasteners:** The primary application. Used for high-temperature bolts, studs, nuts, and pins in jet engines and airframes. * **Welding Wire:** Used for joining components made of Rene 41 or other nickel-based superalloys, and for overlay cladding to provide a wear and corrosion-resistant surface. * **Springs & Screens:** Manufactured into springs that must retain their load at high temperatures, and woven into screens for high-temperature filtration. * **Nuclear Reactor Components:** Used for tying and structural support wires within reactor cores due to its strength and radiation resistance. * **Chemical Processing:** For mesh, baskets, and fixtures used in high-temperature furnaces and corrosive environments. --- ### **5. International Standards** Rene 41 wire is produced to meet various international and industry-specific standards to ensure quality and performance. | 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* (Often referenced for wire). | | **Aerospace Material Spec. (AMS)** | **AMS 5836** | *Wire, Nickel Alloy, Corrosion and Heat Resistant, 19Cr - 11Co - 10Mo - 3.1Ti - 1.6Al, Solution Heat Treated* (The primary specification for solution-annealed wire). | | **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* (Relevant for forged parts from wire). | | **UNS** | **N07041** | Unified Numbering System designation. | | **Werkstoff Nr.** | **2.4972** | Common German material number. | --- ### **Summary** **Rene 41 Wire (UNS N07041)** is a premium, high-performance product form of a classic nickel-based superalloy. Its exceptional high-temperature strength, stability, and corrosion resistance make it the material of choice for critical components like **fasteners** and **welding wire** in the most demanding aerospace, industrial, and energy sectors. Conformance to standards like **AMS 5836** guarantees the material's suitability for these severe-service 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 2325 gallon liquid totes Special package is available on request.