Hastelloy Tube Fittings Supplier in India — C276, C22 & B2
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Aashish Metals is a trusted supplier and stockist of Hastelloy tube fittings in India, offering a comprehensive range of Hastelloy C276, C22, and B2 compression, ferrule, and instrumentation fittings from our Mumbai facility. These precision-engineered components are specifically designed for leak-free fluid and gas transfer in the most corrosive and high-pressure process environments including chemical plants, oil refineries, pharmaceutical facilities, and offshore platforms. Every fitting we supply is manufactured from high-quality Hastelloy alloys conforming to ASTM B564 / ASME SB564 and ASTM B366 / ASME SB366, covering the full size range from 1/16″ to 2″ OD (6 mm to 50 mm OD), with pressure ratings reaching up to 60,000 psi for high-pressure applications. Whether you need standard Hastelloy C276 tube fittings for instrumentation lines, Hastelloy C22 tube fittings for pharmaceutical reactors, or Hastelloy B2 fittings for hydrochloric acid service, Aashish Metals has the stock, the certifications, and the expertise to deliver quickly and reliably. Contact us today for a competitive quote.
What Are Hastelloy Tube Fittings?
Hastelloy tube fittings are precision-engineered connection components used to join, adapt, branch, or terminate small-bore tubing in high-purity and high-integrity piping systems. Unlike standard stainless steel fittings, Hastelloy tube fittings are fabricated from nickel-based superalloys primarily Hastelloy C276, C22, and B2 that deliver exceptional resistance to corrosion, pitting, crevice attack, and stress-corrosion cracking even in the most aggressive chemical media. They find extensive use in instrumentation lines, hydraulic systems, pneumatic circuits, sample-point connections, and analytical equipment across the chemical, oil & gas, pharmaceutical, and aerospace industries.
Aashish Metals stocks the complete product family, covering ferrule (compression), threaded, and welded configurations. Our range is a Swagelok-compatible / equivalent design and also covers Parker, Hoke, and Gyrolok equivalent fitting geometries, allowing direct interchangeability in existing tubing systems.
Hastelloy Fasteners Grades
Hastelloy C276 Tube Fittings
Hastelloy C276 (UNS N10276, Werkstoff Nr. 2.4819) is the benchmark grade for tube fittings in corrosive service. Its high molybdenum-tungsten content resists both oxidising and reducing media, wet chlorine, hypochlorites, and sulphuric acid. Our Hastelloy C276 tube fittings are the most widely requested grade, used everywhere from chemical plant instrument loops to offshore wellhead control lines.
Hastelloy C22 Tube Fittings
Hastelloy C22 (UNS N06022, Werkstoff Nr. 2.4602) delivers superior resistance in mixed oxidising-acid environments and flue-gas desulphurisation (FGD) service. Our Hastelloy C22 tube fittings are specified by process engineers wherever nitric acid, chromic acid, or bleach-bearing streams contact instrument tubing.
Technical data
Hastelloy Tube Fittings Specification
| Parameter | Details |
|---|---|
| Standards (ASTM / ASME) | ASTM B564 / ASME SB564, ASTM B366 / ASME SB366 |
| Size range (OD — inch) | 1/16" to 2" OD |
| Size range (OD — metric) | 6 mm to 50 mm OD |
| Tube wall (typical) | 0.028" (1/8" OD) to 0.095" (1" OD) |
| Working pressure | Up to 6,000 psi (standard); up to 60,000 psi (high-pressure series) |
| Medium-pressure rating | Up to 20,000 psig (1,378 bar); temperature up to 1,000 °F (537 °C) |
| High-pressure rating | Up to 60,000 psig (4,134 bar); temperature up to 1,000 °F (537 °C) |
| Temperature range | −196 °C to +537 °C (depending on grade and application) |
| Application temperature | 150 °C to 400 °C (standard service) |
| Thread standards | NPT (ANSI B1.20.1), BSPT / BSPP (ISO 228/1), JIS, UNF, SAE |
| End connections | Threaded (NPT/BSP), Welding, JIC (37° flare), Swivel |
| Body type | Forged / Bar Stock |
| Surface finish | Export bright, short blasted, electroplated |
| Configurations | Straights, elbows, tees, crosses, caps, plugs, nuts, ferrules, chromatograph and column ends |
| PTFE standards | ASTM D1710, ASTM D3294 |
| Test certifications | EN 10204 Type 3.1 / 3.2, ISO 15156, NACE MR0175 |
| Packing | Carton (21×16×14 cm) or wooden box (38×27×17 cm); 1 pc–20 pcs/carton |
Hastelloy Tube 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 Tube Fittings Mechanical Properties
| Grade | Density | Melting point | Tensile strength | Yield strength (0.2% offset) | Elongation |
|---|---|---|---|---|---|
| Hastelloy C276 | 8.89 g/cm³ | 1,370 °C (2,500 °F) | Psi 115,000 / MPa 790 | Psi 52,000 / MPa 355 | 40% |
| Hastelloy C22 | 8.69 g/cm³ | 1,399 °C (2,550 °F) | Psi 100,000 / MPa 690 | Psi 45,000 / MPa 310 | 45% |
| Hastelloy B2 | 9.20 g/cm³ | 1,370 °C (2,500 °F) | Psi 110,000 / MPa 760 | Psi 51,000 / MPa 350 | 40% |
Hastelloy C276 Ferrule Tube Fittings Pressure Ratings
NPT/ISO ratings as per ASME B31.3 — ambient temperature process piping.
| Tube OD (inch) | Typical wall (inch) | Working pressure — male (psig / bar) | Working pressure — female (psig / bar) |
|---|---|---|---|
| 1/8" | 0.028" | 10,000 (689) | 6,500 (447) |
| 1/4" | 0.035" | 8,000 (551) | 6,600 (454) |
| 3/8" | 0.049" | 7,800 (537) | 5,300 (365) |
| 1/2" | 0.065" | 7,700 (530) | 4,900 (337) |
| 3/4" | 0.083" | 7,300 (502) | 4,600 (316) |
| 1" | 0.095" | 5,300 (365) | 4,400 (303) |
| 1-1/4" | — | 6,000 (413) | 5,000 (344) |
| 1-1/2" | — | 5,000 (344) | 4,600 (316) |
| 2" | — | 3,900 (268) | 3,900 (268) |
Hastelloy C276 vs C22 vs B2 Tube Fittings — Grade Selection Guide
| Property | Hastelloy C276 | Hastelloy C22 | Hastelloy B2 |
|---|---|---|---|
| UNS no. | N10276 | N06022 | N10665 |
| Werkstoff Nr. | 2.4819 | 2.4602 | 2.4617 |
| JIS | NW 0276 | NW 6022 | — |
| EN designation | NiMo16Cr15W | NiCr21Mo14W | — |
| GOST | XH65MBY | — | — |
| Key alloy standard | ASTM B564 | ASTM B564 | ASTM B564 |
| Mo content | 15–17% | 12.5–14.5% | 26–30% |
| Cr content | 14.5–16.5% | 20–22.5% | 1% max |
| Best environment | Oxidising + reducing media | Oxidising acids, FGD, mixed acid | HCl at all concentrations |
| Typical application | Chemical plant instrumentation | Pharmaceutical, FGD | HCl plant sample lines |
| Tensile strength | 790 MPa | 690 MPa | 760 MPa |
| Max service temp. | ~1,038 °C | ~1,038 °C | ~538 °C |
| Aashish Metals page | C276 Tube Fittings | C22 Tube Fittings | Hastelloy Products |
Standards & Certifications We Supply Against
| Standard body | Specification | Application |
|---|---|---|
| ASTM | B564 | Hastelloy forged fittings (C276, C22, B2) |
| ASME | SB564 | Pressure vessel / boiler fittings |
| ASTM | B366 | Hastelloy wrought / welded fittings |
| ASME | SB366 | Pressure vessel wrought fittings |
| ASME | B31.3 | Process piping pressure ratings |
| NACE | MR0175 / ISO 15156 | Sour-gas service compliance |
| ISO | 9001:2015 | Quality management system |
| EN | 10204 Type 3.1 | Standard mill test certificate |
| EN | 10204 Type 3.2 | Third-party witnessed certificate |
| ASTM | D1710 / D3294 | PTFE-seated components |
| PED | 2014/68/EU | Pressure Equipment Directive (Europe) |
Grade Equivalents at a Glance
| Grade | UNS | WNR | JIS | GOST | EN |
|---|---|---|---|---|---|
| Hastelloy C276 | N10276 | 2.4819 | NW 0276 | XH65MBY | NiMo16Cr15W |
| Hastelloy C22 | N06022 | 2.4602 | NW 6022 | — | NiCr21Mo14W |
| Hastelloy B2 | N10665 | 2.4617 | — | — | — |
Standard Configurations
Hastelloy tube fittings are available in the following standard connection configurations:
- Tube-to-Tube: Union — Straight, Elbow, Tee, Cross, Bulkhead
- Tube-to-Male: Male Connector, Male Elbow, Male Run Tee, Male Branch Tee, Male Bulkhead Connector
- Tube-to-Female: Female Connector, Female Elbow, Female Run Tee, Female Branch Tee, Female Bulkhead Connector
- Positionable: Positionable Male Elbow, Positionable Male Run Tee (Swivel)
- Weld Connector: Nut & Ferrule Set
- Tube Closure: Tube Cap / Plug
Accessories
- Front Ferrule (Single Ferrule)
- Back Ferrule (Double Ferrule)
- Ferrule Nut
- Blanking Plug / Blanking End
- Blanking End Cap
- Allen Key (Hex Key)
Extended Types & Specialty Fittings
High-Pressure Series:
- Medium-Pressure Fittings (up to 20,000 psig)
- High-Pressure Fittings (up to 60,000 psig)
Instrumentation Fittings:
- Hastelloy C276 Instrumentation Fittings (for analytical & control instruments)
- Chromatograph / Column-End Fittings
- Sample-Point Fittings
Hydraulic & Pneumatic:
- Hastelloy C276 Hydraulic Tube Fittings
- Hastelloy Pneumatic Tube Fittings
- JIC (37° Flare) Fittings
- SAE / SAE Flareless Tube Fittings
Weld-Type:
- Tube Socket Weld Union
- Male Pipe Weld Elbow
- Male Pipe Weld Connector
Special / Flange:
- Integral Flange Connector
- Sanitary Flange
- Lap Joint Flange Connector
- Vent Protector
For complementary products, explore our Hastelloy C276 pipe fittings, Hastelloy C22 pipe fittings, Hastelloy C276 socket weld fittings, Hastelloy C22 socket weld fittings, Hastelloy C276 threaded fittings, and Hastelloy C22 threaded fittings.
Where Hastelloy Tube Fittings Are Used
Hastelloy tube fittings are indispensable wherever process media would destroy conventional stainless steel fittings within months. The following industries rely on them daily:
Chemical Processing Instrument tubing loops, sampling systems, chemical injection lines, and vent connections in reactors, columns, and storage vessels handling acids, chlorides, and oxidising/reducing mixed streams. Hastelloy C276 is the standard grade here; C22 steps in where oxidising conditions dominate.
Oil & Gas / Petrochemical Wellhead instrument connections, chemical injection quills, subsea control umbilicals, and offshore platform process lines exposed to H₂S-bearing sour gas and high-chloride brine. NACE MR0175-compliant fittings are readily available from Aashish Metals. Pair with our Hastelloy C276 pipes and tubes for complete instrument loop packages.
Pharmaceutical & Biotechnology High-purity sample lines, solvent transfer loops, and CIP/SIP connections in API synthesis plants and biofermentation facilities, where both aggressive solvents and oxidising sterilants must be handled by the same fitting.
Power Generation Steam and condensate sampling systems, flue-gas desulphurisation (FGD) scrubber instrumentation, and cooling water chemistry monitoring loops in power plants.
Aerospace & Defence Fuel system fittings, hydraulic lines, and test-rig connections for aircraft and defence applications where Hastelloy X and C276 are specified for their combination of corrosion resistance and high-temperature strength.
Marine & Shipbuilding Seawater cooling system connections, ballast water treatment instrument lines, and desalination plant tubing where marine-grade corrosion resistance is non-negotiable.
Water Treatment & Environment Hypochlorite dosing systems, acid scrubber instrument lines, and effluent treatment plant connections.
Food & Beverage / Research Laboratories Analytical instrument connections, HPLC sample lines, and chromatography column fittings where chemical inertness and freedom from contamination are critical.
How Aashish Metals Sources and Controls Hastelloy Tube Fittings
Every Hastelloy tube fitting we supply is either manufactured by approved forging / bar-stock producers or sourced from authorised stockists who can provide full material traceability back to the original melt. Here is how we protect quality at every stage:
Body Type & Manufacturing Route Hastelloy tube fittings are machined from forged bar stock or solid bar, never from cast material. This ensures consistent grain structure, superior mechanical properties, and leak-free sealing performance — critical in high-pressure and high-purity applications.
Surface Treatment Fittings are available in export bright finish, short blasted finish, and electroplated finish. Thread surfaces are finished with silver coating to reduce galling and ensure smooth assembly even in high-pressure ferrule systems.
Testing Performed on Every Lot
- Dimensional inspection (OD, thread pitch, ferrule geometry)
- Hydrostatic pressure test
- Pneumatic leak test
- Proof pressure test
- Burst pressure test
- Corrosion testing (as required)
- Vibration test (for critical service)
- PMI (Positive Material Identification) — XRF on request
Compatible With Leading Brand Geometries Our Hastelloy C276 ferrule tube fittings are dimensionally compatible with Swagelok®, Parker A-Lok®, Hoke Gyrolok®, and equivalent designs, making them a reliable and cost-effective replacement in existing tubing systems — which is why buyers searching for “hastelloy tubing swagelok” often find our product the right fit.
For the complete Hastelloy product family, see our Hastelloy products range, Hastelloy C276 manifold valves, Hastelloy C276 needle valves, and Hastelloy C276 instrumentation ball valves.
FAQs
Hastelloy tube fittings are used to connect, adapt, branch, or terminate small-bore tubing in corrosive and high-pressure process systems. Common applications include instrument loops, chemical injection lines, hydraulic circuits, sampling connections, and analytical instrument tubing in chemical, oil & gas, pharmaceutical, and aerospace industries.
Yes. Our Hastelloy C276 and C22 tube fittings are manufactured to the same dimensional geometry as Swagelok®, Parker A-Lok®, Hoke Gyrolok®, and similar double-ferrule compression fitting systems, making them directly interchangeable in existing tubing installations.
Hastelloy ferrule (compression) tube fittings conform to ASTM B564 / ASME SB564 for forged fittings and ASTM B366 / ASME SB366 for wrought and welded fittings. Pressure ratings follow ASME B31.3.
Standard ferrule-type fittings are rated up to 6,000 psi working pressure. Medium-pressure series fittings reach 20,000 psig (1,378 bar), and high-pressure series fittings are rated up to 60,000 psig (4,134 bar) at temperatures up to 537 °C (1,000 °F).
Aashish Metals stocks Hastelloy tube fittings from 1/16″ to 2″ OD (fractional inch) and 6 mm to 50 mm OD (metric). Special sizes such as 22 mm, 25 mm, 32 mm, and 50 mm are also available on request.
Get a Competitive Quote for Hastelloy Tube Fittings
Sourcing Hastelloy tube fittings for a project, a shutdown order, or an urgent replacement requirement? Aashish Metals has the stock, the certifications, and the technical team to turn your enquiry into a delivery — fast.
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