This Nickel-Chromium-Molybdenum-Tungsten alloy has exceptional resistance to sulfuric or hydrochloric acids, and to crevice or pitting corrosion in hot acid solutions which out performs Hastelloy C grades in mixed acids.
| Element | Min % | Max % |
| Ni | Balance | Balance |
| Cr | 19.0 | 23.00 |
| Mo | 15.0 | 17.0 |
| W | 3.0 | 4.4 |
| Ti | 0.02 | 0.25 |
| Fe | – | 1.0 |
| C | – | 0.01 |
| Mn | – | 0.75 |
| S | – | 0.02 |
| Si | – | 0.08 |
| P | – | 0.04 |
Density
8.73g/cm³ | 0.315 lb/in³
Melting Point
1338 – 1380 °C | 2440 – 2516 °F
Coefficient of Expansion
11.97 gm/m °C (20 – 100 °C) | 6.650x10-6 in/in °F (70 – 212 °F)
Modulus of Rigidity
|
Modulus of Elasticity
207.0 kN/mm² | 3000 ksi
Heat Treatment of Finished Parts
| Condition as supplied by Alloy Wire | Type | Temperature | Time (Hr) | Cooling | |
| °C | °F | ||||
| Annealed or Spring Temper | |||||
Properties
| Condition | Approx. tensile strength | Approx. operating temperature | ||
| N/mm² | ksi | °C | °F | |
| Annealed | <1000 | <145i | Up to 1000 | Up to 1832 |
| Spring Temper | 1200 – 1600 | 174 – 232 | Up to 1000 | Up to 1832 |