Haynes 25* / L605 Specification
*Trade name of Haynes International
- W.NR 2.4964
- UNS R30605
- AWS 060
Applicable Standards:
- AMS 5796
- ASTM F90
- NACE MR0175 / ISO 15156-3
Haynes 25/L605 is a Cobalt-Nickel-Chromium-Tungsten alloy that combines good high temperature strength with good resistance to oxidising environments up to 980oC (1795oF) for long exposures. It also has excellent resistance to sulphidation.
| Good Mechanical Properties at Elevated Temperatures | Yes |
| Corrosion Resistant at Ambient Temperatures | No |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | No |
| Oxidation Resistant | Yes |
| Precipitation Hardenable | Yes |
Applications include:
- Parts for gas turbine engines and bearings
| Approximate Chemical Composition | |
| Co | 51% max |
| Cr | 20% |
| W | 15% |
| Ni | 10% |
| Fe | 3% max |
| Mn | 1.5% |
| Properties | ||
| DENSITY | 9.13 g/cm3 | 0.330 lb/in3 |
| MELTING POINT | 1410oC | 2570oF |
| COEFFICIENT OF EXPANSION | 12.3 µm/m °C (20 - 100°C) |
6.8 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 98 kN/mm2 | 14214 ksi |
| MODULUS OF ELASTICITY | 225 kN/mm2 | 32634 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Temper | Stress relieve at 400oC - 450oC (750oF - 840oF) for 2 hours and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 950 - 1100 N/mm2 | 138 - 159 ksi | -200 to +900oC | -330 to +1650oF |
| (for lightly stressed applications) | ||||
| Spring Temper | 1400 - 1800 N/mm2 | 203 - 261 ksi | -200 to +900oC | -330 to +1650oF |
| (for lightly stressed applications) | ||||
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