Alloy 25 / L605,Haynes 25 Sheet,UNS R30605,E FORU

British Specs:，American Specs:AMS 5537 Sheet AMS 5759 Bar & Rod AMS 5796 Welding wire AMS 5797 Covered welding rod，German Specs:

### **Technical Data Sheet: Alloy 25 / L605 / Haynes 25 Sheet (UNS R30605)** **High-Temperature, Corrosion-Resistant Cobalt-Based Superalloy Sheet** --- #### **1. Overview** **Alloy 25 Sheet** (commercially known as **Haynes 25**, **L605**, or **UNS R30605**) is a solid-solution strengthened cobalt-chromium-tungsten-nickel superalloy supplied in thin sheet form. This product combines exceptional high-temperature strength with outstanding oxidation resistance, making it ideal for applications requiring lightweight yet durable components in severe service environments. The sheet form of L605 offers excellent formability and fabricability while maintaining the alloy's characteristic performance at temperatures up to 1150°C (2100°F). Its unique combination of properties makes it particularly valuable for aerospace, industrial, and specialized engineering applications where weight savings and high temperature performance are critical. --- #### **2. Chemical Composition (Typical Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | **Cobalt (Co)** | Balance | Base matrix providing solid-solution strength and inherent wear resistance | | **Chromium (Cr)** | 19.0 - 21.0 | Provides exceptional oxidation and hot corrosion resistance | | **Tungsten (W)** | 14.0 - 16.0 | Primary solid-solution strengthener for high-temperature strength | | **Nickel (Ni)** | 9.0 - 11.0 | Stabilizes the FCC structure, improving ductility and fabricability | | **Iron (Fe)** | 3.0 max | Impurity control | | **Manganese (Mn)** | 1.0 - 2.0 | Enhances hot workability and sulfur control | | **Silicon (Si)** | 0.30 - 0.60 | Acts as deoxidizer and improves oxidation resistance | | **Carbon (C)** | 0.05 - 0.15 | Forms carbides for wear resistance and grain boundary strength | --- #### **3. Physical Properties** | Property | Value / Condition | |----------|-------------------| | **Density** | 9.13 g/cm³ (0.330 lb/in³) | | **Melting Range** | 1330 - 1410°C (2425 - 2570°F) | | **Thermal Conductivity** | 9.6 W/m·K (at 20°C) | | **Coefficient of Thermal Expansion** | 12.5 μm/m·K (20-100°C)
17.8 μm/m·K (20-1000°C) | | **Specific Heat Capacity** | 420 J/kg·K (at 20°C) | | **Electrical Resistivity** | 0.92 μΩ·m | | **Magnetic Permeability** | Essentially non-magnetic | --- #### **4. Mechanical Properties (Typical for Annealed Sheet)** **Room Temperature Properties**: - **Tensile Strength**: 950 - 1200 MPa (138 - 174 ksi) - **0.2% Yield Strength**: 450 - 600 MPa (65 - 87 ksi) - **Elongation**: 50 - 60% - **Hardness**: Rockwell B 95 - 105 **Elevated Temperature Performance**: - Excellent creep resistance up to **980°C (1800°F)** - Outstanding oxidation resistance up to **1150°C (2100°F)** - Good fatigue strength and thermal stability - Maintains mechanical properties under thermal cycling conditions --- #### **5. International Standards & Specifications** | Standard Organization | Standard Designation | Description | |----------------------|----------------------|-------------| | **ASTM International** | **ASTM F90** | Wrought cobalt-20chromium-15tungsten-10nickel alloy | | **Aerospace (SAE/AMS)** | **AMS 5537** | Sheet, strip, and plate | | **ASME** | **SB-574** | Sheet specifications | | **Unified Numbering System** | **UNS R30605** | All product forms | | **European (EN)** | **2.4964** | Material number | --- #### **6. Product Applications** **Aerospace & Defense**: - Gas turbine engine components - Combustion chambers and liners - Afterburner components - Exhaust system components - Heat shields and thermal protection systems **Industrial & Energy**: - Heat treatment fixtures - Furnace components and radiant tubes - Heat exchanger components - Chemical processing equipment **Specialized Applications**: - Medical device components - Semiconductor processing equipment - High-temperature gaskets and seals --- #### **7. Manufacturing & Fabrication** **Available Forms**: - Sheet thickness: 0.1mm to 5mm - Standard sheet sizes or custom dimensions - Various surface finishes available **Fabrication Characteristics**: - **Forming**: Excellent cold forming characteristics; may require annealing between severe forming operations - **Machining**: Can be machined using conventional methods; carbide tooling recommended - **Welding**: Excellent weldability using TIG, MIG, and resistance welding methods - **Heat Treatment**: Typically supplied in annealed condition --- #### **8. Quality Assurance** - Certified to meet ASTM F90 and AMS 5537 standards - Full material traceability and certification - Dimensional inspection per customer requirements - Surface quality verification and defect detection --- **Note**: This technical data sheet provides typical values and characteristics. Specific properties may vary depending on manufacturing process, heat treatment, and sheet thickness. Users should consult with our technical team for application-specific recommendations and verification of properties for critical 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 2202 gallon liquid totes Special package is available on request.