Pacific Stainless Alloys is a leading supplier and exporter of Hastelloy® C22 (UNS N06022 / W.Nr. 2.4602), based in Mumbai, India. Hastelloy C22 is a high-performance nickel-chromium-molybdenum-tungsten alloy that offers outstanding resistance to a broad range of aggressive chemicals, including both oxidizing and reducing media. This alloy is specially designed to combat pitting, crevice corrosion, and stress corrosion cracking, even in highly acidic or chlorinated environments. Its excellent resistance to corrosion in wet chlorine, nitric acid, ferric and cupric chlorides, and seawater makes it suitable for harsh industrial conditions. Pacific Stainless Alloys supplies Hastelloy C22 in various product forms including pipes, tubes, plates, bars, sheets, flanges, and pipe fittings—all manufactured in accordance with global standards like ASTM, ASME, and DIN.
Hastelloy® C22 (UNS N06022 / W.Nr. 2.4602) is a versatile nickel-based alloy composed primarily of nickel with substantial additions of chromium, molybdenum, and tungsten. It offers exceptional resistance to localized corrosion, including pitting and crevice corrosion, in oxidizing, reducing, and mixed chemical environments. This alloy also prevents the formation of grain-boundary precipitates in the heat-affected zone of welds, making it ideal for use in the as-welded condition.
Hastelloy C22 is widely used in industries that operate under extreme chemical conditions:
| Product Form | Standards |
| Sheet / Plate | ASTM B575 / ASME SB575 |
| Pipe | ASTM B622 / ASME SB622, ASTM B619 / ASME SB619 |
| Tube | ASTM B622 / ASME SB622, ASTM B626 / ASME SB626 |
| Bar / Rod | ASTM B574 / ASME SB574 |
| Fittings | ASTM B366 / ASME SB366 |
| Forgings | ASTM B564 / ASME SB564 |
| Temperature | Tensile Strength (MPa) | Yield Strength 0.2% (MPa) | Elongation (%) |
| Room Temp | 760 | 345 | 45 |
| Element | Composition (%) |
| Nickel (Ni) | Balance |
| Chromium (Cr) | 20.0 – 22.5 |
| Molybdenum (Mo) | 12.5 – 14.5 |
| Iron (Fe) | 2.0 – 6.0 |
| Tungsten (W) | 2.5 – 3.5 |
| Cobalt (Co) | 2.5 max |
| Manganese (Mn) | Max 0.50 |
| Silicon (Si) | Max 0.08 |
| Carbon (C) | Max 0.015 |
| Phosphorus (P) | Max 0.02 |
| Sulfur (S) | Max 0.02 |
| Vanadium (V) | Trace |
Sheet / Plate | ASME SB-575 |
Round Bar | ASME SB-574 |
Pipe | ASME SB-622 / ASME SB-619 |
Tube | ASME SB-622 / ASME SB-626 |
Fittings | ASME SB-366 |
Forgings | ASME SB-564 |
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