Hastelloy C276 and hastelloy c-22
What is the difference between Hastelloy C276 and hastelloy c-22?
Hastelloy C22 generally has excellent overall corrosion resistance, especially to pitting and crevice corrosion, due to its high chromium content, while Hastelloy C276 excels in reducing environments and is renowned for its resistance to pitting and general corrosion in a wide range of media.
What is Hastelloy C276 alloy used for?
Hastelloy C276 is widely used in various industries, including chemical processing plants, petrochemicals, power generation, marine environments, etc., due to its excellent corrosion resistance, heat resistance and stress resistance.
What is the heat treatment for Hastelloy C276 Alloy?
Hastelloy C276 alloy (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.
What is the difference between Hastelloy C276 and SS316?
Both C276 and 316 stainless steel have strong corrosion resistance. However, C276 is more corrosion resistant in high temperature environments, while 316 stainless steel is more corrosion resistant in low temperature environments.
C-22 Alloy Vs C-276 Alloy Chemical Composition
| Element | C-22 Alloy | C-276 Alloy | Key Differences |
|---|---|---|---|
| S | ≤ 0.020% | ≤ 0.030% | Tighter limit in C-22 |
| Si | ≤ 0.08% | ≤ 0.08% | Identical |
| C | ≤ 0.015% | ≤ 0.01% | Tighter limit in C-276 |
| Mn | ≤ 0.50% | ≤ 1.00% | Looser limit in C-276 |
| P | ≤ 0.020% | ≤ 0.040% | Looser limit in C-276 |
| V | ≤ 0.35% | ≤ 0.35% | Identical |
| W | 2.5% ~ 3.5% | 3.0% ~ 4.5% | Higher range in C-276 |
| Fe | 2.0% ~ 6.0% | 4.0% ~ 7.0% | Higher range in C-276 |
| Mo | 12.5% ~ 14.5% | 15.0% ~ 17.0% | Higher range in C-276 |
| Cr | 20.0% ~ 22.5% | 14.5% ~ 16.5% | Significantly lower in C-276 |
| Ni | - | ≥ 51.0% (base metal) | Primary base for C-276 |
| Hastelloy C-22 | Hastelloy C-276 | |
|---|---|---|
| Density, g/cm³ | 8.69 | 8.89 |
| Density, lb/in.³ | 0.314 | 0.321 |
| Melting Range, °F | 2475-2550 | 2415-2500 |
| Melting Range, °C | 1357-1399 | 1323-1371 |
Gnee Steel is a supplier of Hastelloy C276 And Hastelloy C-22, with products covering tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extruded profiles. We work with steel mills to provide customers with 625 alloy, and its products meet or exceed many leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN and BS standards.
Gnee Steel stocks and sells Hastelloy C276 And Hastelloy C-22 tubes, pipes, plates, strips, plates, round bars, flat bars, forged billets, hexagons, wire and extruded profiles. You are welcome to contact us for a quote at any time at ss@gneesteel.com
