Alloy 25 / L605,Udimet L605 Other/Similar Specs,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 (UNS R30605) & Similar Specifications --- #### 1. Overview & Designation Clarification **CORRECT DESIGNATIONS:** - **Alloy 25, L605, Haynes 25** - Cobalt-based superalloy - **UNS R30605** - Correct Unified Numbering System **DESIGNATION CORRECTION:** - "Udimet L605" - Incorrect, Udimet alloys are nickel-based - "UNS W73605" - Incorrect for this alloy This datasheet covers the comprehensive specifications for Alloy 25/L605 and compares it with similar high-temperature alloys to assist in proper material selection and application engineering. --- #### 2. Chemical Composition Comparison (Typical Weight %) | Element | Alloy 25/L605 | Haynes 188 | Stellite 6B | Hastelloy X | Inconel 617 | |---------|---------------|------------|-------------|-------------|-------------| | **Co** | Balance | Balance | Balance | - | 12.5 max | | **Cr** | 19.0-21.0 | 20.0-24.0 | 28.0-32.0 | 20.5-23.0 | 20.0-24.0 | | **W** | 14.0-16.0 | 13.0-16.0 | 3.0-5.0 | 0.2-1.0 | - | | **Ni** | 9.0-11.0 | 20.0-24.0 | 2.0-3.0 | Balance | Balance | | **Fe** | 3.0 max | 3.0 max | 3.0 max | 17.0-20.0 | 3.0 max | | **Mo** | - | - | 0.5-1.5 | 8.0-10.0 | 8.0-10.0 | | **Co** | - | - | - | 0.5-2.5 | 12.5 max | | **Al** | - | - | - | - | 0.8-1.5 | --- #### 3. Physical Properties Comparison | Property | Alloy 25/L605 | Haynes 188 | Stellite 6B | Hastelloy X | Inconel 617 | |----------|---------------|------------|-------------|-------------|-------------| | **Density (g/cm³)** | 9.13 | 9.13 | 8.61 | 8.22 | 8.36 | | **Melting Range (°C)** | 1330-1410 | 1325-1360 | 1290-1425 | 1260-1355 | 1330-1380 | | **Thermal Conductivity (W/m·K)** | 9.6 | 10.3 | 14.6 | 11.9 | 13.4 | | **CTE (μm/m·K)** | 12.5 | 12.2 | 11.9 | 12.6 | 11.8 | | **Magnetic Permeability** | Non-magnetic | Non-magnetic | Slightly magnetic | Non-magnetic | Non-magnetic | --- #### 4. Mechanical Properties Comparison **Room Temperature (Annealed Condition):** | Property | Alloy 25/L605 | Haynes 188 | Stellite 6B | Hastelloy X | Inconel 617 | |----------|---------------|------------|-------------|-------------|-------------| | **Tensile Strength (MPa)** | 950-1200 | 965-1240 | 890-1050 | 730-950 | 700-900 | | **Yield Strength (MPa)** | 450-600 | 460-620 | 520-650 | 360-480 | 300-450 | | **Elongation (%)** | 50-60 | 50-65 | 8-15 | 45-55 | 45-65 | | **Hardness (HRB)** | 95-105 | 90-100 | 30-40 HRC | 85-95 | 80-95 | **High-Temperature Capability:** - **Alloy 25/L605**: Excellent strength to 980°C, oxidation resistance to 1150°C - **Haynes 188**: Superior oxidation resistance to 1200°C, better thermal stability - **Stellite 6B**: Excellent wear resistance, moderate high-temperature strength - **Hastelloy X**: Good overall strength and oxidation resistance to 1200°C - **Inconel 617**: Excellent creep strength and oxidation resistance to 1100°C --- #### 5. International Standards & Specifications **Alloy 25/L605 Primary Specifications:** - **ASTM**: F90 - **AMS**: 5537 (Sheet/Strip), 5759 (Bar/Forgings) - **UNS**: R30605 - **EN**: 2.4964 - **ASME**: SB-574 **Similar Alloy Specifications:** - **Haynes 188**: UNS R30188, AMS 5608 - **Stellite 6B**: UNS R30016, AMS 5385 - **Hastelloy X**: UNS N06002, AMS 5536 - **Inconel 617**: UNS N06617, AMS 5887 --- #### 6. Application Comparison & Selection Guide **Aerospace Applications:** - **Alloy 25/L605**: Turbine blades, combustion chambers, afterburner components - **Haynes 188**: Combustor liners, transition ducts, exhaust systems - **Stellite 6B**: Wear pads, bushings, bearing surfaces - **Hastelloy X**: Combustion cans, afterburners, spray bars - **Inconel 617**: Combustion chambers, transition ducts **Industrial Applications:** - **Alloy 25/L605**: High-temperature fasteners, valve components - **Haynes 188**: Heat exchangers, radiant tubes - **Stellite 6B**: Cutting tools, wear-resistant surfaces - **Hastelloy X**: Furnace components, heat treatment fixtures - **Inconel 617**: Heat exchangers, catalytic converters **Temperature Range Recommendations:** - **Up to 980°C**: Alloy 25/L605, Hastelloy X - **980-1100°C**: Inconel 617, Haynes 188 - **Above 1100°C**: Haynes 188 (oxidation resistance) - **Wear Applications**: Stellite 6B (all temperatures) --- #### 7. Fabrication Characteristics Comparison **Machinability Rating (Compared to Wrought 316 Stainless Steel):** - Alloy 25/L605: 25% - Haynes 188: 30% - Stellite 6B: 20% - Hastelloy X: 35% - Inconel 617: 30% **Weldability:** - **Excellent**: Alloy 25/L605, Haynes 188, Hastelloy X - **Good**: Inconel 617 - **Fair**: Stellite 6B (requires specialized procedures) **Forming Characteristics:** - **Excellent**: Hastelloy X, Inconel 617 - **Good**: Alloy 25/L605, Haynes 188 - **Poor**: Stellite 6B (limited formability) --- #### 8. Corrosion Resistance Comparison **Oxidation Resistance:** - **Excellent**: Haynes 188, Alloy 25/L605 - **Very Good**: Inconel 617, Hastelloy X - **Good**: Stellite 6B **Sulfidation Resistance:** - **Excellent**: Alloy 25/L605, Haynes 188 - **Good**: Hastelloy X, Inconel 617 - **Fair**: Stellite 6B **Hot Corrosion Resistance:** - **Excellent**: Haynes 188 (due to lanthanum addition) - **Very Good**: Alloy 25/L605 - **Good**: Inconel 617, Hastelloy X --- #### 9. Cost & Availability Considerations **Relative Cost Index (Approximate):** - Stellite 6B: 1.0 (Baseline) - Hastelloy X: 1.2 - Alloy 25/L605: 1.5 - Inconel 617: 1.8 - Haynes 188: 2.0 **Availability:** - **Widely Available**: Hastelloy X, Inconel 617 - **Readily Available**: Alloy 25/L605, Stellite 6B - **Special Order**: Haynes 188 --- #### 10. Selection Guidelines **Choose Alloy 25/L605 when:** - Optimal balance of high-temperature strength and oxidation resistance required - Non-magnetic properties are essential - Good fabricability and weldability needed - Medical implant compatibility required **Consider Alternatives when:** - **Haynes 188**: Higher temperature oxidation resistance needed (>1150°C) - **Stellite 6B**: Superior wear resistance is primary requirement - **Hastelloy X**: Better fabricability and lower cost acceptable - **Inconel 617**: Higher creep strength required at intermediate temperatures --- **Important Note**: This comparison provides general guidelines. Material selection should be based on specific application requirements, environmental conditions, and life cycle considerations. Always consult with materials engineers for critical applications and verify all certifications against applicable standards.

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 2219 gallon liquid totes Special package is available on request.