Hastelloy Buttweld Fittings are manufactured for industrial piping systems operating under corrosive, high-pressure, and high-temperature service conditions. These fittings are widely used in chemical processing plants, petrochemical industries, acid handling systems, offshore applications, refineries, and power generation units.
ARK Stainless Inc is a manufacturer, supplier, exporter of Hastelloy C22 and Hastelloy C276 Buttweld Elbows, Tees, Reducers, Caps, and Stub Ends in seamless, ERW, welded, and fabricated construction according to ASTM B366 / ASME SB366, ASME B16.9, ASME B16.28, and MSS SP-43 standards.
Hastelloy C22 Pipe Fittings provide strong resistance against oxidizing chemicals, chloride contamination, and aggressive process media. Hastelloy C276 Buttweld Fittings are commonly used for applications involving sulfuric acid, hydrochloric acid, wet chlorine gas, and corrosive chemical processing environments.
Available in multiple schedules, wall thicknesses, and custom project specifications with material test certificates, PMI testing, radiography testing, and third-party inspection support.
| Grade | Ni | C | Mo | Mn | Si | Fe | P | S | Co | Cr | W | V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hastelloy C22 | Balance | 0.010 max | 12.5-14.5 | 0.50 max | 0.08 max | 2-6 | 0.02 max | 0.02 max | 2.5 max | 20-22.5 | 2.5-3.5 | 0.35 max |
| Hastelloy C276 | Balance | 0.01 max | 15–17 | 1.0 max | 0.08 max | 4–7 | 0.04 max | 0.03 max | 2.5 max | 14.5–16.5 | 3–4.5 | 0.35 max |
| Grade | 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 % |
| Hastelloy C276 | 8.89 g/cm3 | 1370 °C (2500 °F) | Psi – 1,15,000 , MPa – 790 | Psi – 52,000 , MPa – 355 | 40 % |
Hastelloy C22 and Hastelloy C276 Buttweld Fittings are available in elbows, tees, reducers, caps, stub ends, pipe bends, couplings, and other pipe fitting configurations for corrosive industrial piping systems.
These Hastelloy Pipe Fittings are manufactured in seamless, welded, ERW, and fabricated construction according to ASTM B366 / ASME SB366 and ASME B16.9 standards with multiple schedules and wall thickness options.
Hastelloy C22 Buttweld Fittings are commonly used for chemical processing plants, acid handling systems, fertilizer plants, and pharmaceutical process piping applications requiring resistance against oxidizing chemicals and chloride contamination.
Hastelloy C276 Pipe Fittings are widely supplied for offshore applications, petrochemical plants, scrubbers, heat exchangers, and refinery piping systems operating under corrosive and elevated temperature conditions.
| STANDARD | UNS | WNR. | EN | JIS | GOST | OR |
|---|---|---|---|---|---|---|
| Hastelloy C22 | N06022 | 2.4602 | NiCr21Mo14W | NW 6022 | - | - |
| Hastelloy C276 | N10276 | 2.4819 | NiMo16Cr15W | NW 0276 | ??65??? | ??760 |
