Alloy 25 / L605,Udimet L605 Sheet,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 Sheet (UNS R30605)** **High-Temperature Cobalt-Based Superalloy Sheet** --- #### **1. Overview & Designation Clarification** **CORRECT DESIGNATIONS:** - **Alloy 25, L605, Haynes 25** - Standard commercial names - **UNS R30605** - Correct Unified Numbering System designation - **AMS 5537** - Primary sheet specification **DESIGNATION CORRECTION:** - "Udimet L605" is incorrect - Udimet alloys are nickel-based superalloys - "UNS W73605" is incorrect for this material Alloy 25 Sheet is a solid-solution strengthened cobalt-based superalloy supplied in thin sheet form, offering an exceptional combination of high-temperature strength, outstanding oxidation resistance, and excellent fabricability for demanding 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 wear resistance | | **Chromium (Cr)** | 19.0 - 21.0 | Exceptional oxidation and hot corrosion resistance | | **Tungsten (W)** | 14.0 - 16.0 | Primary solid-solution strengthener | | **Nickel (Ni)** | 9.0 - 11.0 | Stabilizes FCC structure, improves 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 | 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** **Sheet (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 - **Shear Strength**: 550 - 700 MPa **High-Temperature Performance:** - **Maximum Service Temperature**: 1150°C (2100°F) in oxidizing atmospheres - **Creep Resistance**: Excellent up to 980°C (1800°F) - **Fatigue Strength**: Good high-cycle fatigue resistance --- #### **5. International Standards & Specifications** | Standard | Description | Product Form | |----------|-------------|---------------| | **AMS 5537** | Sheet, strip, and plate | Sheet | | **ASTM F90** | Wrought cobalt-chromium-tungsten alloy | All forms | | **ASME SB-574** | Sheet specifications | Sheet | | **UNS R30605** | Correct UNS designation | All forms | | **EN 2.4964** | European material number | All forms | --- #### **6. Product Applications** **Aerospace & Defense:** - Gas turbine engine combustion chambers - Afterburner components and liners - Exhaust system components - Heat shields and thermal protection systems - Aircraft structural components **Power Generation:** - Gas turbine combustion liners - Heat exchanger components - Boiler protection plates - High-temperature ducting **Industrial Applications:** - Heat treatment fixtures and baskets - Furnace components - Chemical processing equipment - High-temperature tooling **Medical Applications:** - Medical equipment components - Surgical instrument parts - Specialized medical devices --- #### **7. Sheet Specifications** **Standard Sizes:** - **Thickness**: 0.5mm to 5.0mm (0.020" to 0.197") - **Width**: 600mm to 1500mm (23.6" to 59.1") - **Length**: 1500mm to 3000mm (59.1" to 118.1") **Available Conditions:** - **Annealed**: Solution annealed for optimal formability - **Cold Rolled**: For increased strength - **Stress Relieved**: For dimensional stability **Surface Finish:** - **2B Finish**: Standard mill finish - **No. 1 Finish**: Hot rolled, annealed, and pickled - **Polished Finish**: Special order (various grits available) - **Brushed Finish**: Decorative applications --- #### **8. Fabrication Characteristics** **Forming & Bending:** - Excellent cold forming characteristics - Minimum bend radius: 2T (annealed condition) - Suitable for deep drawing operations - Hot forming possible for complex shapes **Machining:** - Use positive rake carbide tools - Moderate speeds with consistent feed - Adequate cooling required - Work hardens during machining **Welding:** - Excellent weldability using TIG process - Recommended filler: L605 welding wire - Low heat input recommended - Post-weld heat treatment optional --- #### **9. Quality Assurance** **Testing & Certification:** - Chemical analysis certification - Mechanical properties testing - Dimensional verification - Surface quality inspection - Ultrasonic testing available **Quality Standards:** - AMS 5537 compliance - AS9100 quality system - NADCAP accreditation available - Customer-specific requirements - Full traceability maintained --- **Important Note**: This datasheet provides accurate technical data for genuine **Alloy 25/L605/Haynes 25 Sheet (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. Consult with engineering for specific forming and fabrication recommendations.

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 2215 gallon liquid totes Special package is available on request.