Hastelloy˘ C-4This Nickel-Chromium-Molybdenum alloy tolerates high temperatures and gives a design freedom in areas whe
Hastelloy˘ C-4
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.
Hastelloy C-4 is also known as Nicrofer 6616.
| Chemical Composition | Specifications | Designations | Key Features | Typical Applications |
|---|
| ElementMin %Max %Cr14.0018.00Mo14.0017.00Fe–3.00C–0.015Si–0.08Co–2.00Mn–1.00P–0.04S–0.03Ti–0.70NiBal | ASTM B574ASTM B619 | W.NR 2.4610UNS N06455AWS 052 | Excellent resistance to stress-corrosion cracking and to oxidizing atmospheres at high temperatureExceptional resistance to a wide variety of chemical process environments including, hot contaminated mineral acids, solvents, chlorine, formic and acetic acids, and salt waters. | Chemical processing |
| Density | 8.64 g/cm³ | 0.312 lb/in³ |
| Melting Point | 1399°C | 2550°F |
| 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 |
| 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 | 800 – 1100 | 116 – 159 | -200 to +400 | -330 to +750 |
| Spring Temper | 1300 – 1700 | 189 – 247 | -200 to +400 | -330 to +750 |
The above tensile strength ranges are typical. If you require different please ask.
