What is the difference between Hastelloy C276 and 400 Alloy?
Hastelloy C-276 is superior to Monel 400 in terms of high temperature resistance, corrosion resistance and strength. However, Monel 400 is cheaper. Therefore, in areas where Monel 400 is applicable, it is more cost-effective. However, in high temperature environments, Hastelloy C-276 should be selected.
What is Hastelloy C276 used for?
Hastelloy C276 has become a trusted material for flange applications due to its excellent corrosion resistance, heat resistance and stress resistance. It is widely used in various industries, including chemical processing plants, petrochemicals, power generation, marine environments, etc.
What are the characteristics of Hastelloy C276?
Excellent corrosion resistance in reducing environments.
Excellent resistance to strong oxidizing salt solutions such as ferric chloride and cupric chloride.
High nickel and molybdenum content gives it good corrosion resistance in reducing environments.
What is the heat treatment method for Hastelloy C276?
Hastelloy C276 (Uns N10276) is solution heat treated at 1121°C (2050°F) followed by rapid quenching. For forged or hot formed parts, solution heat treatment is recommended prior to use.
Alloy 400 vs. C-276 Composition Comparison
| Element | Alloy 400 | Alloy C-276 |
|---|---|---|
| Sulfur (S) | ≤ 0.024% | ≤ 0.030% |
| Silicon (Si) | ≤ 0.50% | ≤ 0.08% |
| Carbon (C) | ≤ 0.30% | ≤ 0.01% |
| Manganese (Mn) | ≤ 2.00% | ≤ 1.00% |
| Phosphorus (P) | Not specified | ≤ 0.040% |
| Tungsten (W) | Not specified | 3.0% ~ 4.5% |
| Copper (Cu) | Not specified | 28.0% ~ 34.0% |
| Iron (Fe) | ≤ 2.5% | 4.0% ~ 7.0% |
| Molybdenum (Mo) | Not specified | 15.0% ~ 17.0% |
| Chromium (Cr) | Not specified | 14.5% ~ 16.5% |
| Nickel (Ni) | 63.0% | 51.0% |
| Cobalt (Co) | Not specified | 0.35% |
| Monel 400 | Hastelloy C-276 | |
|---|---|---|
| Density, g/cm³ | 8.80 | 8.89 |
| Density, lb/in.³ | 0.318 | 0.321 |
| Melting Range, °F | 2370-2460 | 2415-2500 |
| Melting Range, °C | 1300-1350 | 1323-1371 |
Conclusion
Gnee Steel is a supplier of Hastelloy C276 And 400 Alloy in tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. We work with steel mills to provide our customers with 625 alloy that meets or exceeds many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Hastelloy C276 And 400 Alloy tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extrusions. Feel free to contact us for a quote at ss@gneesteel.com
