Alloy 25 / L605,Haynes 25 Plate,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 Plate (UNS R30605)** **High-Temperature, Corrosion-Resistant Cobalt-Based Superalloy Plate** --- #### **1. Overview** **Alloy 25 Plate** (commercially known as **Haynes 25**, **L605**, or **UNS R30605**) is a solid-solution strengthened cobalt-chromium-tungsten-nickel superalloy supplied in plate form. This product is specifically engineered to provide exceptional high-temperature strength, outstanding oxidation resistance, and excellent structural stability in severe service environments. The plate form of L605 is ideal for fabricating large structural components, high-temperature fixtures, and critical parts requiring exceptional mechanical properties at elevated temperatures. Its combination of strength, corrosion resistance, and fabricability makes it a preferred material for aerospace, energy, and industrial applications. --- #### **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 | --- #### **4. Mechanical Properties (Typical for Annealed Condition)** **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 and rupture strength up to **980°C (1800°F)** - Outstanding oxidation resistance up to **1150°C (2100°F)** - Good structural stability under thermal cycling conditions - Maintains mechanical properties in oxidizing and sulfidizing atmospheres --- #### **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** | Plate and 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 structures - Missile components **Industrial & Energy**: - Heat treatment fixtures and baskets - Furnace components - Heat exchanger plates - Chemical processing equipment - Power generation components **General Engineering**: - High-temperature structural components - Wear plates and surfaces - Specialized tooling and fixtures --- #### **7. Manufacturing & Fabrication** **Available Forms**: - Plate thickness: 5mm to 100mm (custom sizes available) - Standard sizes per customer requirements - Custom cutting and machining available **Fabrication Characteristics**: - **Machining**: Requires sharp tools with positive rake angles; carbide tooling recommended - **Welding**: Excellent weldability using TIG and MIG processes with L605 filler wire - **Forming**: Good hot and cold forming characteristics - **Heat Treatment**: Typically supplied in annealed condition --- #### **8. Quality Assurance** - Certified to meet ASTM F90 and AMS 5537 standards - Full material traceability and certification - Ultrasonic testing available per customer requirements - Comprehensive dimensional inspection and verification --- **Note**: This technical data sheet provides typical values and characteristics. Specific properties may vary depending on manufacturing process, heat treatment, and plate 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 2201 gallon liquid totes Special package is available on request.