When regular stainless steel fails, engineers turn to Hastelloy. Hastelloy products are made from nickel-molybdenum-chromium alloys, with tungsten added in grades C276 and C22. That chemistry lets them withstand hot acids, chlorides and oxidizing media that corrode stainless steel. C276 and C22 are the most widely used grades; B2 is the choice for pure hydrochloric acid. Chemical, refinery, pharmaceutical and power plants rely on them.
Aashish Metals is a Hastelloy products supplier and exporter in India. We supply Hastelloy C276 pipes and tubes and Hastelloy C22 pipes to round bars, sheets and plates, flanges, pipe fittings and fasteners. Every batch ships with heat numbers, mill test certificates and full traceability.
Whether you need one flange for a maintenance shutdown or several tonnes of Hastelloy C276 bar for a new project, our team will help you choose the grade, size and delivery time to suit your process. Browse the range below and send us your requirement for a quote.
Technical data
Hastelloy Products Forms and Grades
| Product form | C276 | C22 | B2 | Typical use |
|---|---|---|---|---|
| Pipes and tubes | Yes | Yes | On request | Process piping, heat exchangers |
| Round bars | Yes | Yes | Yes | Shafts, valve trim, machined parts |
| Sheets and plates | Yes | Yes | On request | Vessels, linings, scrubbers |
| Pipe fittings (butt weld) | Yes | Yes | On request | Pipe routing |
| Socket weld and threaded fittings | Yes | Yes | On request | Small-bore lines |
| Flanges | Yes | Yes | On request | Joints on high-pressure lines |
| Fasteners | Yes | Yes | On request | Flange bolting |
| Tube fittings and valves | Yes | Yes | On request | Instrumentation and sampling |
Why Engineers Choose Hastelloy Over Stainless Steel
Hastelloy is a family of nickel-based alloys, not one metal. Nickel gives the base its toughness, molybdenum defends against reducing acids, and chromium handles oxidizing conditions. The combination is why one alloy can survive process streams that corrode 316L stainless steel rapidly.
| Feature | What it means for your plant |
|---|---|
| Outstanding pitting and crevice resistance | Fewer leaks at gaskets, flange faces and weld heat-affected zones in chloride-rich media |
| High resistance to chloride stress corrosion cracking | Reliable service in seawater, brine and hot chloride process streams |
| Handles both oxidizing and reducing acids | One alloy for mixed or upset conditions, such as hydrochloric, sulphuric, nitric and formic acid |
| Excellent weldability | Low-carbon chemistry resists grain-boundary precipitation, so C276 and C22 welded parts can usually be used without post-weld annealing. B2 is different: solution-anneal it after welding. |
| Retains strength at temperature | Keeps useful strength at elevated temperature. Check the design temperature limit for your grade and code in the ASME allowable stress tables. |
| Long service life | Lower shutdown frequency and lifetime cost, even when the upfront price is higher |
Hastelloy C276, C22 and B2 Chemical Composition (% by weight)
| Element | Hastelloy C276 (UNS N10276) | Hastelloy C22 (UNS N06022) | Hastelloy B2 (UNS N10665) |
|---|---|---|---|
| Nickel (Ni) | Balance (about 57) | Balance (about 56) | Balance (about 69) |
| Molybdenum (Mo) | 15.0 – 17.0 | 12.5 – 14.5 | 26.0 – 30.0 |
| Chromium (Cr) | 14.5 – 16.5 | 20.0 – 22.5 | 1.0 max |
| Iron (Fe) | 4.0 – 7.0 | 2.0 – 6.0 | 2.0 max |
| Tungsten (W) | 3.0 – 4.5 | 2.5 – 3.5 | – |
| Cobalt (Co) | 2.5 max | 2.5 max | 1.0 max |
| Carbon (C) | 0.01 max | 0.015 max | 0.02 max |
| Manganese (Mn) | 1.0 max | 0.50 max | 1.0 max |
| Silicon (Si) | 0.08 max | 0.08 max | 0.10 max |
| Phosphorus (P) | 0.04 max | 0.02 max | 0.04 max |
| Sulphur (S) | 0.03 max | 0.02 max | 0.03 max |
| Vanadium (V) | 0.35 max | 0.35 max | – |
Hastelloy Physical and Mechanical Properties
| Property | C276 | C22 | B2 |
|---|---|---|---|
| Density | 8.89 g/cm³ | 8.69 g/cm³ | 9.22 g/cm³ |
| Melting range | 1325 – 1370 °C | 1357 – 1399 °C | 1330 – 1380 °C |
| Tensile strength (min) | 690 MPa | 690 MPa | 760 MPa |
| Yield strength 0.2% (min) | 283 MPa | 310 MPa | 350 MPa |
| Elongation (min) | 40% | 45% | 40% |
| Werkstoff number | 2.4819 | 2.4602 | 2.4617 |
| Modulus of elasticity | 205 GPa | 206 GPa | 217 GPa |
| Thermal conductivity (at 100 °C) | 10.2 W/m·K | 10.1 W/m·K | 11.1 W/m·K |
| Mean thermal expansion (20–100 °C) | 11.2 µm/m·K | 12.4 µm/m·K | 10.3 µm/m·K |
Values are typical for solution-annealed plate. Exact limits vary by product form and specification, so always confirm against the mill test certificate.
ASTM Standards for Hastelloy Pipes, Plates, Bars and Fittings
| Product | ASTM specification |
|---|---|
| Seamless pipe and tube | ASTM B622 |
| Welded pipe and tube | ASTM B619 / B626 |
| Plate, sheet and strip | ASTM B575 / B582 |
| Round bar and rod | ASTM B574 (C276, C22) / ASTM B335 (B2) |
| Forged flanges and fittings | ASTM B564 |
| Butt weld fittings | ASTM B366 |
| Dimensions | ASME B16.5, B16.9, B16.11, B36.19M |
| Fasteners | Machined from ASTM B574 bar (C276, C22); dimensions to ASME B18.2.1 / B18.2.2 [confirm] |
Hastelloy Products Applications
| Industry | Typical Hastelloy applications | Usual grade |
|---|---|---|
| Chemical and petrochemical | Reactors, agitators, heat exchangers, acid transfer lines, valves | C276, C22 |
| Oil and gas | Sour-service piping, wellhead parts, downhole tubing, risers | C276 |
| Pollution control | Flue gas desulphurisation scrubbers, ducting, stack liners | C276, C22 |
| Pharmaceutical and fine chemicals | Reactor vessels, filters, process piping handling chlorides | C22, C276 |
| Pulp and paper | Bleaching towers, digesters, washers | C276 |
| Power generation | Condenser tubes, FGD systems, waste-to-energy boilers | C276, C22 |
| Marine and desalination | Seawater piping, heat exchangers, evaporators | C276 |
| Hydrochloric acid processing | Evaporators, pumps, piping in hot, concentrated service | B2 |
| Aerospace and gas turbines | Combustor liners, ducting, exhaust parts | Hastelloy X |
Hastelloy C276 vs C22 vs B2 vs 316L Stainless Steel
Many buyers land on our page searching for "hastelloy c22 vs c276", so this table answers the question directly.
| Criteria | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 | 316L stainless |
|---|---|---|---|---|
| Base | Ni-Mo-Cr-W | Ni-Cr-Mo-W | Ni-Mo | Fe-Cr-Ni-Mo |
| Best in | Reducing and mixed acids, wet chlorine, seawater | Oxidizing and mixed media, strongest all-rounder | Pure reducing acids (HCl) | Mild, low-chloride service |
| Oxidizing acid resistance | Good | Excellent | Poor | Fair |
| Reducing acid resistance | Excellent | Very good | Excellent | Poor |
| Chloride pitting resistance | Excellent | Excellent | Not recommended | Limited |
| Weldability | Excellent | Excellent | Good (needs care) | Excellent |
| Relative cost | High | High | High | Low |
Which one should you choose? Pick C276 for general-purpose chemical and marine work, C22 when oxidizing agents or hot chloride mixes are present, and B2 only for clean reducing acid such as hydrochloric. If your stream is milder, you may be able to save money with stainless steel, duplex or Alloy 20. If you need a nickel alternative for heat or seawater, compare with Inconel, Monel or titanium. Our full nickel alloy range covers every option.
Certified Hastelloy Material You Can Trace
| Document or standard | What it covers |
|---|---|
| Mill test certificate, EN 10204 3.1 | Heat number, chemistry and mechanical results |
| EN 10204 3.2 (on request) | Certificate countersigned by an independent inspector |
| PMI report | On-site check of alloy composition |
| NACE MR0175 / ISO 15156 | Sour-service suitability, where specified |
| ASTM / ASME specifications | B622, B619, B626, B575, B574, B564, B366, B16.5, B16.9 |
| Third-party inspection | Arranged with your nominated agency |
| [Your company certifications] | [Add ISO 9001 or other registrations you hold, and only if they are current] |
Hastelloy Products Forms and Grades
| Product form | C276 | C22 | B2 | Typical use |
|---|---|---|---|---|
| Pipes and tubes | Yes | Yes | On request | Process piping, heat exchangers |
| Round bars | Yes | Yes | Yes | Shafts, valve trim, machined parts |
| Sheets and plates | Yes | Yes | On request | Vessels, linings, scrubbers |
| Pipe fittings (butt weld) | Yes | Yes | On request | Pipe routing |
| Socket weld and threaded fittings | Yes | Yes | On request | Small-bore lines |
| Flanges | Yes | Yes | On request | Joints on high-pressure lines |
| Fasteners | Yes | Yes | On request | Flange bolting |
| Tube fittings and valves | Yes | Yes | On request | Instrumentation and sampling |
Why Engineers Choose Hastelloy Over Stainless Steel
Hastelloy is a family of nickel-based alloys, not one metal. Nickel gives the base its toughness, molybdenum defends against reducing acids, and chromium handles oxidizing conditions. The combination is why one alloy can survive process streams that corrode 316L stainless steel rapidly.
| Feature | What it means for your plant |
|---|---|
| Outstanding pitting and crevice resistance | Fewer leaks at gaskets, flange faces and weld heat-affected zones in chloride-rich media |
| High resistance to chloride stress corrosion cracking | Reliable service in seawater, brine and hot chloride process streams |
| Handles both oxidizing and reducing acids | One alloy for mixed or upset conditions, such as hydrochloric, sulphuric, nitric and formic acid |
| Excellent weldability | Low-carbon chemistry resists grain-boundary precipitation, so C276 and C22 welded parts can usually be used without post-weld annealing. B2 is different: solution-anneal it after welding. |
| Retains strength at temperature | Keeps useful strength at elevated temperature. Check the design temperature limit for your grade and code in the ASME allowable stress tables. |
| Long service life | Lower shutdown frequency and lifetime cost, even when the upfront price is higher |
Hastelloy C276, C22 and B2 Chemical Composition (% by weight)
| Element | Hastelloy C276 (UNS N10276) | Hastelloy C22 (UNS N06022) | Hastelloy B2 (UNS N10665) |
|---|---|---|---|
| Nickel (Ni) | Balance (about 57) | Balance (about 56) | Balance (about 69) |
| Molybdenum (Mo) | 15.0 – 17.0 | 12.5 – 14.5 | 26.0 – 30.0 |
| Chromium (Cr) | 14.5 – 16.5 | 20.0 – 22.5 | 1.0 max |
| Iron (Fe) | 4.0 – 7.0 | 2.0 – 6.0 | 2.0 max |
| Tungsten (W) | 3.0 – 4.5 | 2.5 – 3.5 | – |
| Cobalt (Co) | 2.5 max | 2.5 max | 1.0 max |
| Carbon (C) | 0.01 max | 0.015 max | 0.02 max |
| Manganese (Mn) | 1.0 max | 0.50 max | 1.0 max |
| Silicon (Si) | 0.08 max | 0.08 max | 0.10 max |
| Phosphorus (P) | 0.04 max | 0.02 max | 0.04 max |
| Sulphur (S) | 0.03 max | 0.02 max | 0.03 max |
| Vanadium (V) | 0.35 max | 0.35 max | – |
Hastelloy Physical and Mechanical Properties
| Property | C276 | C22 | B2 |
|---|---|---|---|
| Density | 8.89 g/cm³ | 8.69 g/cm³ | 9.22 g/cm³ |
| Melting range | 1325 – 1370 °C | 1357 – 1399 °C | 1330 – 1380 °C |
| Tensile strength (min) | 690 MPa | 690 MPa | 760 MPa |
| Yield strength 0.2% (min) | 283 MPa | 310 MPa | 350 MPa |
| Elongation (min) | 40% | 45% | 40% |
| Werkstoff number | 2.4819 | 2.4602 | 2.4617 |
| Modulus of elasticity | 205 GPa | 206 GPa | 217 GPa |
| Thermal conductivity (at 100 °C) | 10.2 W/m·K | 10.1 W/m·K | 11.1 W/m·K |
| Mean thermal expansion (20–100 °C) | 11.2 µm/m·K | 12.4 µm/m·K | 10.3 µm/m·K |
Values are typical for solution-annealed plate. Exact limits vary by product form and specification, so always confirm against the mill test certificate.
ASTM Standards for Hastelloy Pipes, Plates, Bars and Fittings
| Product | ASTM specification |
|---|---|
| Seamless pipe and tube | ASTM B622 |
| Welded pipe and tube | ASTM B619 / B626 |
| Plate, sheet and strip | ASTM B575 / B582 |
| Round bar and rod | ASTM B574 (C276, C22) / ASTM B335 (B2) |
| Forged flanges and fittings | ASTM B564 |
| Butt weld fittings | ASTM B366 |
| Dimensions | ASME B16.5, B16.9, B16.11, B36.19M |
| Fasteners | Machined from ASTM B574 bar (C276, C22); dimensions to ASME B18.2.1 / B18.2.2 [confirm] |
Hastelloy Products Applications
| Industry | Typical Hastelloy applications | Usual grade |
|---|---|---|
| Chemical and petrochemical | Reactors, agitators, heat exchangers, acid transfer lines, valves | C276, C22 |
| Oil and gas | Sour-service piping, wellhead parts, downhole tubing, risers | C276 |
| Pollution control | Flue gas desulphurisation scrubbers, ducting, stack liners | C276, C22 |
| Pharmaceutical and fine chemicals | Reactor vessels, filters, process piping handling chlorides | C22, C276 |
| Pulp and paper | Bleaching towers, digesters, washers | C276 |
| Power generation | Condenser tubes, FGD systems, waste-to-energy boilers | C276, C22 |
| Marine and desalination | Seawater piping, heat exchangers, evaporators | C276 |
| Hydrochloric acid processing | Evaporators, pumps, piping in hot, concentrated service | B2 |
| Aerospace and gas turbines | Combustor liners, ducting, exhaust parts | Hastelloy X |
Hastelloy C276 vs C22 vs B2 vs 316L Stainless Steel
Many buyers land on our page searching for "hastelloy c22 vs c276", so this table answers the question directly.
| Criteria | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 | 316L stainless |
|---|---|---|---|---|
| Base | Ni-Mo-Cr-W | Ni-Cr-Mo-W | Ni-Mo | Fe-Cr-Ni-Mo |
| Best in | Reducing and mixed acids, wet chlorine, seawater | Oxidizing and mixed media, strongest all-rounder | Pure reducing acids (HCl) | Mild, low-chloride service |
| Oxidizing acid resistance | Good | Excellent | Poor | Fair |
| Reducing acid resistance | Excellent | Very good | Excellent | Poor |
| Chloride pitting resistance | Excellent | Excellent | Not recommended | Limited |
| Weldability | Excellent | Excellent | Good (needs care) | Excellent |
| Relative cost | High | High | High | Low |
Which one should you choose? Pick C276 for general-purpose chemical and marine work, C22 when oxidizing agents or hot chloride mixes are present, and B2 only for clean reducing acid such as hydrochloric. If your stream is milder, you may be able to save money with stainless steel, duplex or Alloy 20. If you need a nickel alternative for heat or seawater, compare with Inconel, Monel or titanium. Our full nickel alloy range covers every option.
Certified Hastelloy Material You Can Trace
| Document or standard | What it covers |
|---|---|
| Mill test certificate, EN 10204 3.1 | Heat number, chemistry and mechanical results |
| EN 10204 3.2 (on request) | Certificate countersigned by an independent inspector |
| PMI report | On-site check of alloy composition |
| NACE MR0175 / ISO 15156 | Sour-service suitability, where specified |
| ASTM / ASME specifications | B622, B619, B626, B575, B574, B564, B366, B16.5, B16.9 |
| Third-party inspection | Arranged with your nominated agency |
| [Your company certifications] | [Add ISO 9001 or other registrations you hold, and only if they are current] |
Hastelloy Products List
Manifold Valves
Instrumentation Ball Valves
Needle Valve
Pipes & Tubes
Pipe Fittings
Threaded Fittings
Socket Weld Fittings
Sheets & Plates
Hastelloy Pipes, Tubes, Plates, Bars, Flanges & Fittings We Supply
- Hastelloy pipes and tubes
Seamless and welded Hastelloy pipe and tubing for heat exchangers, reactor coils and process lines. We stock Hastelloy C276 pipe and tube and Hastelloy C22 pipe and tube in standard schedules and can also supply cut lengths and capillary tubing on request. - Hastelloy round bars and rods
Hot-finished and bright-finished bar for shafts, valve stems, pump parts and machined components. Choose from Hastelloy C276 round bars, Hastelloy C22 round bars and Hastelloy B2 round bars, with bar stock cut to length. - Hastelloy sheets, plates and coils
Flat products for tank linings, scrubber shells, reactor vessels and column internals. See our Hastelloy C276 sheets and plates and Hastelloy C22 sheets and plates, available in cold-rolled and hot-rolled finishes. - Hastelloy pipe fittings
Elbows, tees, reducers, caps and stub ends in Hastelloy C276 pipe fittings and Hastelloy C22 pipe fittings. Small-bore lines are covered by our Hastelloy socket weld fittings and Hastelloy threaded fittings. - Hastelloy flanges
Weld neck, slip-on, blind, socket weld, threaded and lap joint flanges in ASME B16.5 pressure classes. Explore our full range of Hastelloy flanges, including Hastelloy C276 flanges, Hastelloy C22 flanges and Hastelloy B2 flanges on request. - Hastelloy fasteners
Studs, bolts, nuts and washers that stop galvanic and crevice corrosion at flanged joints: Hastelloy C276 fasteners and Hastelloy C22 fasteners. - Hastelloy tube fittings and instrumentation valves
Compression Hastelloy C276 tube fittings and Hastelloy C22 tube fittings for analyser and sampling lines, plus Hastelloy C276 needle valves, manifold valves and instrumentation ball valves. For C22 versions, see Hastelloy C22 needle valves and Hastelloy C22 manifold valves.
FAQ’s About Hastelloy Products
Hastelloy is a family of corrosion-resistant nickel-based alloys. Most grades contain about 55–70% nickel, alloyed with molybdenum, chromium, iron and sometimes tungsten. That mix resists acids, chlorides and high temperatures far better than standard stainless steel.
Hastelloy C276 is used in chemical reactors, heat exchangers, flue gas scrubbers, sour-gas piping, pulp bleaching equipment and seawater systems. Its high molybdenum and tungsten content gives it broad resistance to both oxidizing and reducing chemicals, which is why it is the most searched and most specified grade.
C22 contains more chromium (about 21% vs 16%) and slightly less molybdenum, so it handles oxidizing media, such as nitric acid and hot chloride mixes, better. C276 is stronger in reducing acids. Both weld well and resist pitting, and many plants use them interchangeably in mixed service.
Hastelloy B2 performs best in pure, reducing hydrochloric acid at all concentrations. However, it does not tolerate oxidizing contaminants such as ferric or cupric salts. If the acid is mixed or may contain oxidizers, C276 or C22 is the safer choice.
In the annealed condition, Hastelloy C276, C22 and B2 are non-magnetic. Cold working may cause a very slight magnetic response, which does not affect corrosion resistance.
Yes. C276 and C22 weld well by GTAW/TIG, GMAW and SMAW. Use matching filler metal such as ERNiCrMo-4 for C276, ERNiCrMo-10 for C22 and ERNiMo-7 for B2. Keep the heat input low and the joint clean, and avoid contamination from carbon steel and sulphur.
Neither is universally better. Hastelloy is the stronger choice for wet corrosion in acids and chlorides, while Inconel alloys such as Inconel 625 and Inconel 600 often suit high-temperature and oxidation service. Our team can compare them for your process.
Beyond C276 and C22, we can source Hastelloy B2, X, C4 and other grades to order, including forms such as wire, welding rod and wire mesh. Please contact us with your grade and specification.
Need Hastelloy Pipes, Plates, Bars or Flanges? Get Your Quote Today
Tell us the grade, product form, size and quantity, and we will come back with pricing and availability, usually within [24 hours]. Not sure which grade you need? Describe your process fluid and temperature and we will recommend one.
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