Hastelloy Pipe Fittings Supplier in India — C276, C22 & B2
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Aashish Metals is a leading supplier and stockist of Hastelloy pipe fittings in India, offering a comprehensive range of Hastelloy C276, C22, and B2 buttweld pipe fittings manufactured to ASTM B366 / ASME SB366 from our Mumbai facility. Our Hastelloy pipe fittings — including elbows, tees, reducers, caps, stub ends, and crosses — are fabricated from high-performance nickel-based superalloys renowned for their outstanding resistance to corrosion, oxidising and reducing acids, pitting, and stress-corrosion cracking, even in the harshest industrial process environments. Available in seamless and welded construction from 1/8″ NB to 48″ NB (Sch 5S to Sch XXS), our fittings conform to ASME B16.9, ASME B16.28, and MSS-SP-43 dimensional standards, making them directly interchangeable with any globally compliant piping system. Whether you need Hastelloy C276 pipe fittings for chemical reactor pipework, Hastelloy C22 pipe fittings for FGD systems, or B2 fittings for hydrochloric acid service, Aashish Metals has the expertise, stock, and certification documentation to deliver reliably — on time, every time. Request a quotation today.
What Are Hastelloy Pipe Fittings?
Hastelloy pipe fittings are wrought or fabricated nickel-alloy components used to change direction, branch, reduce, terminate, or connect pipes in large-bore process piping systems. Unlike standard stainless steel fittings, Hastelloy pipe fittings leverage the unique combination of nickel, molybdenum, chromium, and tungsten to deliver corrosion resistance far beyond what conventional materials can provide. They are the first choice for process piping in chemical processing, oil & gas, pharmaceutical, FGD, and offshore industries — wherever fluid streams would destroy lesser alloys within months.
Aashish Metals stocks Hastelloy pipe fittings in three primary grades:
Hastelloy Pipe Fittings Grades
Hastelloy C276 Pipe Fittings
Hastelloy C276 (UNS N10276 / Werkstoff Nr. 2.4819) is the world’s most widely used corrosion-resistant alloy for pipe fittings. Its high molybdenum (15–17%) and tungsten (~3.7%) content delivers exceptional resistance to both oxidising and reducing media — wet chlorine, hypochlorites, sulphuric acid, hydrochloric acid, and mixed acids. Our Hastelloy C276 pipe fittings are the standard choice for critical chemical plant pipework. Complement your order with Hastelloy C276 pipes and tubes for complete loop packages.
Hastelloy C22 Pipe Fittings
Hastelloy C22 (UNS N06022 / Werkstoff Nr. 2.4602) features higher chromium content (20–22.5%) than C276, giving it superior performance in strongly oxidising environments such as nitric acid, chromic acid, and FGD scrubber streams. Our Hastelloy C22 pipe fittings are increasingly specified in pharmaceutical synthesis and mixed-acid environments. Pair with Hastelloy C22 pipes and tubes for a complete piping system.
Technical data
Hastelloy Pipe Fittings Specification
| Parameter | Details |
|---|---|
| Standard | ASTM B366 / ASME SB366 |
| Dimensional standard | ASME B16.9, ASME B16.28, MSS-SP-43, MSS-SP-75 |
| Grades | Hastelloy C276, C22, B2 (UNS N10276, N06022, N10665) |
| Size range (NB) | 1/8" NB to 48" NB |
| Seamless fittings size | 1/2" to 10" NB (100% X-Ray welded / fabricated) |
| Welded fittings size | 1/2" to 48" NB |
| Wall thickness (schedule) | Sch 5S, Sch 10S, Sch 10, Sch 40, Sch 40S, Sch 80, Sch 80S, Sch 160, Sch XXS |
| Type | Seamless / Welded / Fabricated |
| Form | Butt Weld Elbow, Tee, Reducer, Cap, Stub End, Cross, Pipe Bend, Collar, Nipple |
| Bending angle | 45°, 60°, 90°, 135°, 180°, 22.5°, or Custom |
| Bending radius | 1D, 2D, 3D, 5D, 6D, 8D, 10D, or Custom |
| Finish | Polished, Pickled, Mill Finish |
| Method | Seamless, Welded, Fabricated, Hot Forming, Mandrel |
| Origin | Indian, European (Valbruna / ThyssenKrupp certified), Japanese |
| Test certificates | MTC EN 10204 Type 3.1 / 3.2, 100% Radiography Test Report, Third Party Inspection Report |
| Packaging | As per customer request — bubble wrap, wooden boxes, pallets |
Hastelloy Pipe Fittings Chemical Composition
| Element | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
|---|---|---|---|
| C (Carbon) | 0.010 max | 0.010 max | 0.02 max |
| Mn (Manganese) | 1.00 max | 0.50 max | 1.0 max |
| Si (Silicon) | 0.08 max | 0.08 max | 0.1 max |
| S (Sulphur) | 0.03 max | 0.02 max | 0.03 max |
| Co (Cobalt) | 2.50 max | 2.50 max | 1.0 max |
| Ni (Nickel) | 50.99 min | 50.015 min | Balance |
| Cr (Chromium) | 14.50 – 16.50 | 20.00 – 22.50 | 1.0 max |
| Fe (Iron) | 4.00 – 7.00 | 2.00 – 6.00 | 2.0 max |
| Mo (Molybdenum) | 15.00 – 17.00 | 12.50 – 14.50 | 26 – 30 |
| P (Phosphorus) | 0.04 max | 0.02 max | 0.04 max |
Hastelloy Pipe Fittings Mechanical Properties
| Grade | Density (g/cm³) | Melting point | Tensile strength | Yield strength (0.2% offset) | Elongation |
|---|---|---|---|---|---|
| Hastelloy C276 | 8.89 | 1,370 °C (2,500 °F) | 790 MPa / 115,000 Psi | 355 MPa / 52,000 Psi | 40% |
| Hastelloy C22 | 8.69 | 1,399 °C (2,550 °F) | 690 MPa / 100,000 Psi | 310 MPa / 45,000 Psi | 45% |
| Hastelloy B2 | 9.20 | 1,370 °C (2,500 °F) | 760 MPa / 110,000 Psi | 350 MPa / 51,000 Psi | 40% |
Hastelloy Pipe Fittings Equivalent Grades
| Grade | UNS no. | Werkstoff Nr. | JIS | GOST | EN | OR |
|---|---|---|---|---|---|---|
| Hastelloy C276 | N10276 | 2.4819 | NW 0276 | XH65MBY | NiMo16Cr15W | ЭП760 |
| Hastelloy C22 | N06022 | 2.4602 | NW 6022 | — | NiCr21Mo14W | — |
| Hastelloy B2 | N10665 | 2.4617 | — | — | — | — |
Suitable Maximum Service Temperature by Grade
| Grade | Max service temperature |
|---|---|
| Hastelloy X | 1,204 °C (2,200 °F) |
| Hastelloy B2 | 1,204 °C (2,200 °F) |
| Hastelloy B3 | 1,093 °C (2,000 °F) |
| Hastelloy C276 | 1,038 °C (1,900 °F) |
| Hastelloy C22 | 1,038 °C (1,900 °F) |
Heat Treatment Temperatures
| Grade | Heat treatment in °F | Heat treatment in °C |
|---|---|---|
| Hastelloy C276 | 2,050 °F | 1,121 °C |
| Hastelloy C22 | 1,810 °F | 1,000 °C |
Hastelloy C276 vs C22 vs B2 Pipe Fittings
| Property | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
|---|---|---|---|
| UNS no. | N10276 | N06022 | N10665 |
| Mo content | 15–17% | 12.5–14.5% | 26–30% |
| Cr content | 14.5–16.5% | 20–22.5% | 1% max |
| Key strength | Oxidising + reducing resistance | Oxidising acids + FGD | HCl at all concentrations |
| Tensile (MPa) | 790 | 690 | 760 |
| Yield (MPa) | 355 | 310 | 350 |
| Max temp. | 1,038 °C | 1,038 °C | 1,204 °C |
| Heat treatment | 1,121 °C (2,050 °F) | 1,000 °C (1,810 °F) | — |
| Best for | Chemical reactors, FGD, offshore | Pharma, nitric acid, FGD | HCl plants, pickling |
| ASTM std. | B366 | B366 | B366 |
| Our page | C276 Fittings | C22 Fittings | Hastelloy Products |
Hastelloy Corrosion Resistance in Common Acids
| Acid environment | Hastelloy C22 | Hastelloy C276 | Concentration |
|---|---|---|---|
| Nitric Acid + 6% HF | 67 | 207 | 5% |
| Sulphuric Acid | 1 | 4 | 50% |
| Acetic Acid | None | Below 1 | 99% |
| Hydrochloric Acid | 3 | 10 | 1% |
| Ferric Chloride | 1 | 2 | 10% |
| Formic Acid | Below 1 | 2 | 88% |
Lower mean corrosion rate = better performance. C22 outperforms C276 in oxidising environments; C276 leads in reducing environments.
Manufacturing Standards for Hastelloy Pipe Fittings
| Standard | Designation | Applies to |
|---|---|---|
| ASME B16.9 | Factory-made wrought buttwelding fittings | Long radius elbows, tees, reducers, caps, stub ends |
| ASME B16.28 | Wrought steel buttwelding short radius fittings | Short radius 90° and 180° elbows |
| MSS-SP-43 | Wrought and fabricated butt-welding fittings (low-pressure, corrosion-resistant) | Hastelloy LR elbows, straight tees, concentric reducers, eccentric reducers, caps, stub ends |
| MSS-SP-75 | High-test wrought buttwelding fittings | Long radius elbows, 3R elbows, tees, reducers, caps |
Manufacturing Process
Seamless Hastelloy pipe fittings are manufactured through the extrusion process, drawn from hot-pierced billets. For welded fittings, plates are taken from seamless material, then welded and formed as per the required shape. In fabrication work, forming, stamping, forging, and multiple other processes are used to achieve the final fitting geometry.
Bending Methods for Hastelloy Reducing Elbows
- Hot Induction Bending
- Ram-Type Bending
- Roll Bending
- Mandrel Bending
- Rotary Draw Bending
Maximum Allowable Stress — Hastelloy Pipe Fittings (ASME)
| Temperature (°F) | Max allowable stress (Ksi) |
|---|---|
| 100 | 27.3 |
| 200 | 27.3 |
| 400 | 27.3 |
| 600 | 25.2 |
| 700 | 24.0 |
| 800 | 23.1 |
| 900 | 22.6 |
| 1,000 | 22.3 |
Standards & Certifications We Supply Against
| Standard body | Specification | Application |
|---|---|---|
| ASTM | B366 | Hastelloy wrought / factory-made pipe fittings |
| ASME | SB366 | Pressure vessel pipe fittings |
| ASME | B16.9 | Factory-made buttwelding fittings dimensions |
| ASME | B16.28 | Short radius buttwelding fittings |
| MSS | SP-43 | Low-pressure corrosion-resistant fittings |
| MSS | SP-75 | High-test wrought buttwelding fittings |
| GOST | 17379, 17375, 17378, 17376, 17377 | Russian standards |
| DIN | 2605, 2615, 2616, 2617, 2618, 28011 | German / European DIN standards |
| EN | 10253-1, 10253-2 | European buttweld fittings |
| NACE | MR0175 / ISO 15156 | Sour gas service |
| ISO | 9001:2015 | Quality management system |
| PED | 2014/68/EU | Pressure Equipment Directive (for EU export) |
Inspection & Testing Available
- EN 10204 Type 3.1 Mill Test Certificate (standard with every order)
- EN 10204 Type 3.2 Third-Party Witnessed Certificate (on request)
- 100% Radiography Test Report
- Hydrostatic Test
- Chemical Analysis (OES / XRF)
- PMI (Positive Material Identification)
- HIC (Hydrogen Induced Cracking) Test
- Ultrasonic Test
- Hardness Testing
- Magnetic Particle Examination
Types of Hastelloy Pipe Fittings
Buttweld Pipe Fittings
- Hastelloy 45° Elbow (Short & Long Radius)
- Hastelloy 90° Elbow (Short Radius / Long Radius)
- Hastelloy 180° Elbow (Short Radius / Long Radius Return Bend)
- Hastelloy 3D / 5D / 10D Elbow
- Hastelloy Equal Tee
- Hastelloy Unequal / Reducing Tee
- Hastelloy Lateral Tee
- Hastelloy Concentric Reducer
- Hastelloy Eccentric Reducer
- Hastelloy End Cap (Pipe Cap)
- Hastelloy Long Stub End
- Hastelloy Short Stub End
- Hastelloy Equal Cross
- Hastelloy Reducing Cross
- Hastelloy Collar
- Hastelloy Reducing Elbow
- Hastelloy Welded Elbow
- Hastelloy Pipe Bend (Hot Induction / Piggable)
- Hastelloy Split Tee
- Hastelloy Nipple
DIN / EN Series Pipe Fittings
- DIN 2617 Cap
- DIN 2605 Elbow / DIN 2605-1 Elbow
- EN 10253-2 Elbow
- DIN 2615 Tee / DIN 2615-1 Tee
- DIN 2616 Reducer / DIN 2616-1 Eccentric Reducer
- DIN 2616-2 Concentric Reducer
- DIN 28011 (Torispherical Heads)
- DIN 2618 (Saddle)
Forged / Socket Weld & Threaded Fittings
For smaller bore applications, Aashish Metals supplies forged Hastelloy fittings including Hastelloy C276 socket weld fittings, Hastelloy C22 socket weld fittings, Hastelloy C276 threaded fittings, and Hastelloy C22 threaded fittings.
Where Hastelloy Pipe Fittings Are Specified
Hastelloy pipe fittings earn their place in applications where corrosion-driven failures would be catastrophic — either in terms of safety, environmental impact, or unplanned shutdown cost. The following industries are our core customers:
Chemical Processing Industry Hastelloy C276 pipe fittings are the material of choice in reactors, heat exchangers, distillation columns, and storage tank connections handling sulphuric acid, phosphoric acid, hydrochloric acid, chlorinated solvents, and mixed acid streams. C22 is preferred wherever oxidising conditions — nitric acid, chromic acid, FGD scrubbing liquor — predominate.
Oil & Gas / Petrochemical Downhole tubing connections, wellhead fittings, offshore platform process pipework, and subsea valve manifolds exposed to sour gas (H₂S), CO₂, and high-chloride brine all benefit from Hastelloy’s resistance to stress-corrosion cracking. Combine with our Hastelloy C276 pipes and tubes for a fully integrated corrosion-resistant system.
Flue-Gas Desulphurisation (FGD) Power station FGD scrubber absorbers, inlet ducting, and recirculation pump casings handle a uniquely aggressive mix of sulphur dioxide, hydrochloric acid, and chlorinated process water — an environment tailored for Hastelloy C22 and C276 fittings.
Pharmaceutical & Fine Chemicals API synthesis reactors, solvent recovery columns, and crystalliser connections use Hastelloy pipe fittings to handle both oxidising sterilants and corrosive process solvents in the same line without material compromise.
Pulp & Paper / Cellulose Industry Bleaching plant pipework, digester connections, and black liquor evaporator headers depend on Hastelloy’s resistance to chlorinated bleaching agents and acidic pulping liquors.
Nuclear & Power Generation Specialty chemicals and steam service pipework in nuclear power plants use Hastelloy fittings for their unique combination of corrosion resistance, high-temperature strength, and dimensional stability under cyclic thermal loading.
Marine / Seawater Service Desalination plant process connections, offshore heat exchanger headers, and shipboard cooling-water systems use Hastelloy fittings for their exceptional resistance to seawater pitting and crevice corrosion.
FAQs Hastelloy Pipe Fittings
Hastelloy buttweld pipe fittings conform to ASTM B366 / ASME SB366 for material and ASME B16.9 (long radius) or ASME B16.28 (short radius) for dimensional standards. Low-pressure corrosion-resistant fittings also conform to MSS-SP-43.
Aashish Metals supplies Hastelloy C276 pipe fittings from 1/8″ NB to 48″ NB. Seamless fittings are available from 1/2″ to 10″ NB, and welded/fabricated fittings from 1/2″ to 48″ NB, in wall thicknesses from Sch 5S to Sch XXS.
We supply the complete range: 45°, 90°, and 180° elbows (long and short radius), equal and reducing tees, concentric reducers, eccentric reducers, pipe caps, long and short stub ends, equal and reducing crosses, collars, nipples, pipe bends, and DIN/EN series fittings. Forged socket-weld and threaded fittings are also available.
Hastelloy C276 resists both oxidising and reducing environments and is the general-purpose corrosion-resistant choice. Hastelloy C22 has higher chromium and performs better in strongly oxidising environments like nitric acid or FGD scrubber streams. For a mixed-acid or chlorine-rich environment, C276 is typically preferred; for oxidising service, C22 is the specialist grade.
Yes. Hastelloy C276 and C22 pipe fittings meet NACE MR0175 / ISO 15156 for sour-gas service. We supply the relevant compliance documentation on request — an important requirement for oil & gas and offshore projects.
Hastelloy elbows are available in short radius (1D), long radius (1.5D), 3D, 5D, 6D, 8D, and 10D bend radii, as well as custom radii on request. Bending angles cover 22.5°, 30°, 45°, 60°, 90°, 135°, and 180°.
Request a Quote for Hastelloy Pipe Fittings
Whether you need a single 90° elbow for a shutdown replacement or a complete buttweld fitting package for a new process plant, Aashish Metals is equipped to fulfil your order with speed, accuracy, and full documentation.
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