Alloy 25 / L605,Haynes 25 Strip,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 Strip (UNS R30605)** **Precision Cold-Rolled Cobalt-Based Superalloy Strip for High-Temperature Applications** --- #### **1. Overview** **Alloy 25 Strip** (commercially known as **Haynes 25**, **L605**, or **UNS R30605**) is a solid-solution strengthened cobalt-chromium-tungsten-nickel superalloy supplied in precision cold-rolled strip form. Characterized by its exceptional dimensional accuracy, superior surface finish, and consistent mechanical properties, this product is engineered for applications requiring precise geometries and reliable performance in extreme environments. The strip form of L605 offers unique advantages for high-volume production of components where close tolerances, excellent formability, and consistent material properties are critical. Its combination of high-temperature strength, oxidation resistance, and fabricability makes it particularly suitable for automated manufacturing processes. --- #### **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 | | **Phosphorus (P)** | 0.03 max | Impurity control | | **Sulfur (S)** | 0.03 max | Impurity control | --- #### **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 | | **Surface Finish** | 0.2 - 0.8 μm Ra (standard) | --- #### **4. Mechanical Properties** **Annealed Condition**: - **Tensile Strength**: 950 - 1150 MPa (138 - 167 ksi) - **0.2% Yield Strength**: 450 - 550 MPa (65 - 80 ksi) - **Elongation**: 55 - 65% - **Hardness**: Rockwell B 90 - 100 - **Vickers Hardness**: 180 - 220 HV **Hard Temper (¼ Hard)**: - **Tensile Strength**: 1150 - 1350 MPa (167 - 196 ksi) - **0.2% Yield Strength**: 800 - 1000 MPa (116 - 145 ksi) - **Elongation**: 25 - 35% - **Hardness**: Rockwell B 100 - 108 **Elevated Temperature Performance**: - Maintains excellent mechanical properties up to **980°C (1800°F)** - Outstanding oxidation resistance up to **1150°C (2100°F)** - Good creep and stress rupture properties --- #### **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** | Strip specifications | | **Unified Numbering System** | **UNS R30605** | All product forms | | **European (EN)** | **2.4964** | Material number | --- #### **6. Product Applications** **Electronics & Electrical**: - High-temperature electrical contacts - Spring contacts and connectors - Lead frames for high-power devices - Thermocouple elements and protection tubes **Automotive & Aerospace**: - Turbine blade seals and shrouds - Gaskets and sealing elements - Fuel nozzle components - High-temperature spring components **Industrial & Medical**: - Precision springs for high-temperature applications - Medical device components - Surgical instrument parts - Chemical processing equipment components --- #### **7. Manufacturing & Fabrication** **Standard Dimensions**: - **Thickness**: 0.05 mm to 2.0 mm - **Width**: 2 mm to 600 mm - **Tolerance**: ±0.005 mm (thickness), ±0.1 mm (width) **Available Conditions**: - Annealed (soft) - ¼ Hard, ½ Hard, Full Hard - Custom tempers available **Fabrication Characteristics**: - **Stamping**: Excellent for precision stamping operations - **Forming**: Suitable for deep drawing and bending operations - **Welding**: Good weldability with TIG and laser welding - **Heat Treatment**: Can be supplied in various tempers; annealing at 1175-1230°C recommended between severe forming operations --- #### **8. Quality Assurance** - Certified to ASTM F90 and AMS 5537 standards - Dimensional accuracy guaranteed - Surface quality inspection per MIL-STD-105E - Full material traceability and test certificates - Statistical process control maintained throughout production --- **Note**: This technical data sheet provides typical values and characteristics. Specific properties may vary depending on manufacturing process, temper condition, and strip dimensions. 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 2203 gallon liquid totes Special package is available on request.