This Nickel-Molybdenum-Chromium alloy with the addition of Tungsten, has excellent corrosion resistance in a wide range of corrosive media and is especially resistant to pitting and crevice corrosion.
Hastelloy C-276 is also known as Nicrofer 5716, Superimphy 276, and Inconel C-276.
| Element | Min % | Max % |
| Mo | 15.00 | 17.00 |
| Cr | 14.50 | 16.50 |
| Fe | 4.00 | 7.00 |
| W | 3.00 | 4.50 |
| Co | – | 2.50 |
| C | – | 0.01 |
| Si | – | 0.08 |
| Mn | – | 1.00 |
| V | – | 0.35 |
| P | – | 0.04 |
| S | – | 0.03 |
| Ni | bal | |
Density
8.89 g/cm³ | 0.321 lb/in³
Melting Point
1370°C | 2500°F
Coefficient of Expansion
11.2 μm/m °C (20 – 100°C) | 6.2 x 10-6 in/in °F (70 – 212°F)
Modulus of Rigidity
78.6 kN/mm² | 11400 ksi
Modulus of Elasticity
205.5 kN/mm² | 29806 ksi
Heat Treatment of Finished Parts
| Condition as supplied by Alloy Wire | Type | Temperature | Time (Hr) | Cooling | |
| °C | °F | ||||
| Annealed or Spring Temper | Stress Relieve | 400 – 450 | 750 – 840 | 2 | Air |
Properties
| Condition | Approx. tensile strength | Approx. operating temperature | ||
| N/mm² | ksi | °C | °F | |
| Annealed | 850 – 1050 | 123 – 152 | -200 to +400 | -330 to +750 |
| Spring Temper | 1300 – 1700 | 189 – 247 | -200 to +400 | -330 to +750 |