Hastelloy C-4* Specification
*Trade name of
Haynes International
- W.NR 2.4610
- UNS N06455
- AWS 052
Applicable Standards:
- ASTM B574
- ASTM B619
This Nickel-Chromium-Molybdenum alloy tolerates high temperatures and gives a design freedom in areas where weld geometry makes excessive heat build-up unavoidable. Resistance to general and localised corrosion and stress corrosion cracking is generally similar to Hastelloy C-276.
| Good Mechanical Properties at Elevated Temperatures | No |
| Corrosion Resistant at Ambient Temperatures | Yes |
| Corrosion Resistant & Good Mechanical Properties at Elevated Temperatures | No |
| Oxidation Resistant | No |
| Precipitation Hardenable | No |
Applications include:
- Chemical processing
| Approximate Chemical Composition | |
| Ni | 65% |
| Cr | 16% |
| Mo | 16% |
| Fe | 3% max |
| Co | 2% max |
| Properties | ||
| DENSITY | 8.64 g/cm3 | 0.312 lb/in3 |
| MELTING POINT | 1399oC | 2550oF |
| COEFFICIENT OF EXPANSION | 10.8 µm/m °C (20 - 100°C) |
6.0 x 10-6 in/in
°F (70 - 212°F) |
| MODULUS OF RIGIDITY | 81.2 kN/mm2 | 11777 ksi |
| MODULUS OF ELASTICITY | 212.4 kN/mm2 | 30807 ksi |
| CONDITION OF SUPPLY | HEAT TREATMENT (AFTER FORMING) |
| Annealed/Spring Temper | Stress relieve at 400 - 450oC (750 - 840oF) for 2 hours and air cool. |
| CONDITION | APPROX TENSILE STRENGTH | APPROX SERVICE TEMPERATURE | ||
| Annealed | 800 - 1100 N/mm2 | 116 - 159 ksi | -200 to +400oC | -330 to +750oF |
| Spring Temper | 1300 - 1500 N/mm2 | 189 - 218 ksi | -200 to +400oC | -330 to +750oF |
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