Alloy 25 / L605,Udimet L605 Plate,UNS W73605,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 Plate (UNS R30605)** **High-Temperature Cobalt-Based Superalloy Plate** --- #### **1. Overview & Designation Clarification** **CORRECT DESIGNATIONS:** - **Alloy 25, L605, Haynes 25** - Standard commercial names - **UNS R30605** - Correct Unified Numbering System designation - **AMS 5537** - Primary plate specification **DESIGNATION CORRECTION:** - "Udimet L605" is incorrect - Udimet alloys are nickel-based superalloys - "UNS W73605" is incorrect for this material Alloy 25 Plate is a solid-solution strengthened cobalt-based superalloy supplied in plate form, offering exceptional high-temperature strength, outstanding oxidation resistance, and excellent structural stability for demanding applications in aerospace, power generation, and industrial sectors. --- #### **2. Chemical Composition (Typical Weight %)** | Element | Content (%) | Role in the Alloy | |---------|-------------|-------------------| | **Cobalt (Co)** | Balance | Base matrix providing solid-solution strength and wear resistance | | **Chromium (Cr)** | 19.0 - 21.0 | Exceptional oxidation and corrosion resistance | | **Tungsten (W)** | 14.0 - 16.0 | Primary solid-solution strengthener | | **Nickel (Ni)** | 9.0 - 11.0 | Stabilizes FCC structure, improves ductility | | **Iron (Fe)** | 3.0 max | Impurity control | | **Manganese (Mn)** | 1.0 - 2.0 | Enhances hot workability | | **Silicon (Si)** | 0.30 - 0.60 | Improves oxidation resistance | | **Carbon (C)** | 0.05 - 0.15 | Carbide formation for wear resistance | --- #### **3. Physical Properties** | Property | Value | |----------|-------| | **Density** | 9.13 g/cm³ (0.330 lb/in³) | | **Melting Range** | 1330 - 1410°C (2425 - 2570°F) | | **Thermal Conductivity** | 9.6 W/m·K (20°C) | | **Coefficient of Thermal Expansion** | 12.5 μm/m·K (20-100°C) | | **Specific Heat Capacity** | 420 J/kg·K (20°C) | | **Electrical Resistivity** | 0.92 μΩ·m | | **Magnetic Permeability** | Essentially non-magnetic | --- #### **4. Mechanical Properties** **Plate (Annealed Condition):** - **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 **High-Temperature Performance:** - **Maximum Service Temperature**: 1150°C (2100°F) in oxidizing atmospheres - **Creep Resistance**: Excellent up to 980°C (1800°F) - **Oxidation Resistance**: Outstanding long-term performance --- #### **5. International Standards & Specifications** | Standard | Description | Product Form | |----------|-------------|---------------| | **AMS 5537** | Sheet, strip, and plate | Plate | | **ASTM F90** | Wrought cobalt-chromium-tungsten alloy | All forms | | **ASME SB-574** | Plate specifications | Plate | | **UNS R30605** | Correct UNS designation | All forms | | **EN 2.4964** | European material number | All forms | --- #### **6. Product Applications** **Aerospace & Defense:** - Gas turbine engine components - Combustion chambers and liners - Afterburner components - Heat shields and thermal protection systems - Structural support plates **Power Generation:** - Gas turbine casings and components - Heat exchanger plates - Boiler components - High-temperature structural supports **Industrial Applications:** - Heat treatment fixtures - Furnace components - Chemical processing equipment - High-temperature tooling plates **Medical Applications:** - Medical equipment components - Surgical instrument platforms - Specialized medical devices --- #### **7. Plate Specifications** **Standard Sizes:** - **Thickness**: 5mm to 100mm (0.197" to 3.937") - **Width**: 1000mm to 2000mm (39.4" to 78.7") - **Length**: 2000mm to 6000mm (78.7" to 236.2") **Available Conditions:** - **Hot Rolled**: As-rolled condition - **Annealed**: Solution annealed for optimal properties - **Machined**: Precision machined surfaces **Surface Finish:** - **2B Finish**: Standard mill finish - **No. 1 Finish**: Hot rolled, annealed, and pickled - **Machined Finish**: Precision machined surfaces - **Polished Finish**: Special order --- #### **8. Fabrication Characteristics** **Machining:** - Machinability rating: 25% of B1112 steel - Use positive rake carbide tools - Rigid setup required - Adequate cooling essential **Welding:** - Excellent weldability - TIG and MIG processes recommended - Use L605 filler wire - Preheating generally not required **Forming:** - Good hot forming characteristics - Hot working temperature: 1150-1200°C - Cold forming possible in annealed condition --- #### **9. Quality Assurance** **Testing & Certification:** - Ultrasonic testing per ASTM A578 - Chemical analysis certification - Mechanical properties certification - Dimensional inspection reports - Full traceability maintained **Quality Standards:** - AMS 5537 compliance - AS9100 quality system - NADCAP accreditation available - Customer-specific requirements --- **Important Note**: This datasheet provides accurate technical data for genuine **Alloy 25/L605/Haynes 25 Plate (UNS R30605)**. The designations "Udimet L605" and "UNS W73605" are incorrect and should not be used. Always verify material certifications against AMS 5537 or ASTM F90 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 2214 gallon liquid totes Special package is available on request.