Hastelloy C22, commonly known as alloy C22, is a flexible austenitic nickel-chromium-molybdenum-tungsten alloy with improved resistance to pitting, crevice corrosion, and stress corrosion cracking. Good resistance to oxidizing media is provided by the high chromium concentration, while good resistance to reducing media is provided by the high molybdenum and tungsten content.
Even more so than C276 and 625, Alloy C22 is one of the most corrosion-resistant materials on the market. Nearly all reducing and oxidizing conditions, such as seawater, powerful oxidizers, and organic acids, are inhospitable to it. Moreover, Nickel Alloy C22 has outstanding resistance to stress corrosion cracking, pitting, and other localized corrosion caused by chlorides, such as in crevices and seams. Because of C22's excellent resistance to corrosion, it is increasingly being used in a wide range of industries, including the paper, oil & gas, food processing, pharmaceutical, and paper industries, as well as other areas where severe environments are present.
| EU EN |
USA - |
Germany DIN,WNr |
Japan JIS |
France AFNOR |
Russia GOST |
| NiCr21Mo14W | C22 | 2.4602 | NW 6022 | NU-30M | - |
If you are looking for best prices for Hastelloy C22, Alloy C22 Material email us on info@duplexsteelalloys.com or call us on +91 9664408767
| Sheet / Plate | Pipe | Buttweld Fittings | Flanges | Forged Fittings | Fasteners | Bars |
| ASTM B575 | ASTM B619, B622 | ASTM B366 | ASTM B564 | ASTM B564 | ASTM B574 | ASTM B574 |
| Grade | C | Mn | Si | S | Co | Ni | Cr | Fe | Mo | P |
| C22 | 0.010 max | 0.50 max | 0.08 max | 0.02 max | 2.50 max | 50.015 min* | 20.00 – 22.50 | 2.00 – 6.00 | 12.50 – 14.50 | 0.02 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Hastelloy C22 | 8.69 g/cm3 | 1399 °C (2550 °F) | Psi – 1,00,000 , MPa – 690 | Psi – 45000 , MPa – 310 | 45 % |
| Physical Property | British Units | Metric Units | ||
| Density | RT | 0.321 lb/in3 | RT | 8.89 g/cm3 |
| Electrical Resistivity | RT | 48.4 μohm.in | RT | 1.23 μohm.m |
| 200°F | 48.7 μohm.in | 100°C | 1.24 μohm.m | |
| 400°F | 49.0 μohm.in | 200°C | 1.25 μohm.m | |
| 600°F | 49.5 μohm.in | 300°C | 1.26 μohm.m | |
| 800°F | 49.8 μohm.in | 400°C | 1.26 μohm.m | |
| 1000°F | 50.6 μohm.in | 500°C | 1.28 μohm.m | |
| - | - | 600°C | 1.30 μohm.m | |
| Thermal Conductivity | 100°F | 71 Btu.in/h.ft2.°F | 50°C | 10.5 W/m.°C |
| 200°F | 77 Btu.in/h.ft2.°F | 100°C | 11.2 W/m.°C | |
| 400°F | 90 Btu.in/h.ft2.°F | 200°C | 12.9 W/m.°C | |
| 600°F | 104 Btu.in/h.ft2.°F | 300°C | 14.7 W/m.°C | |
| 800°F | 117 Btu.in/h.ft2.°F | 400°C | 16.5 W/m.°C | |
| 1000°F | 132 Btu.in/h.ft2.°F | 500°C | 18.3 W/m.°C | |
| Mean Coefficient of Thermal Expansion |
75-200°F | 6.2 μin/in.°F | 24-100°C | 11.2 μm/m.°C |
| 75-400°F | 6.7 μin/in.°F | 24-200°C | 12.0 μm/m2.°C | |
| 77-600°F | 7.1 μin/in.°F | 24-300°C | 12.7 μm/m.°C | |
| 77-800°F | 7.3 μin/in.°F | 24-400°C | 13.1 μm/m.°C | |
| 77-1000°F | 7.4 μin/in.°F | 24-500°C | 13.3 μm/m.°C | |
| 77-1100°F | 7.8 μin/in.°F | 24-600°C | 13.8 μm/m.°C | |
| Magnetic Permeability | 200 oersted | 1.0002 | 15.9 kA/m | 1.0002 |
| Specific Heat | RT | 0.102 Btu/lb.°F | RT | 427 J/kg.°C |
| Dynamic Modulus of Elasticity |
RT | 29.8 x 106psi | RT | 205 GPa |
| 400°F | 28.3 x 106psi | 200°C | 195 GPa | |
| 600°F | 27.3 x 106psi | 300°C | 189 GPa | |
| 800°F | 26.4 x 106psi | 400°C | 183 GPa | |
| 1000°F | 25.5 x 106psi | 500°C | 178 GPa | |
| Melting Range | 2415-2500°F | - | 1323-1371°C | - |
| Poisson’s Ratio | - | - | RT | 0.31 |
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