ASTM B366 Hastelloy C276 Fittings Manufacturer in India | UNS N10276 Pipe Fittings Supplier
ASTM B366 Hastelloy C276 Fittings are corrosion-resistant nickel-molybdenum-chromium alloy pipe fittings manufactured according to ASTM B366 specifications. These fittings are widely used in chemical processing, marine, pharmaceutical, oil & gas, power generation, and pollution control industries because they provide excellent resistance to pitting, crevice corrosion, oxidation, and stress corrosion cracking. Available in elbows, tees, reducers, caps, stub ends, and custom configurations, Hastelloy C276 Pipe Fittings offer outstanding performance in highly aggressive environments.
ASTM B366 Hastelloy C276 Fittings Supplier & Exporter
We are a trusted Hastelloy C276 Fittings Manufacturer in India, supplying premium-quality fittings that comply with international manufacturing standards. Our extensive inventory includes ASTM B366 Hastelloy C276 Fittings, ASME SB366 Hastelloy C276 Fittings, UNS N10276 Pipe Fittings, and Nickel Alloy C276 Fittings suitable for demanding industrial applications across domestic and international markets.
Manufactured using high-quality raw materials, our fittings deliver exceptional mechanical strength, outstanding corrosion resistance, and excellent weldability. Every product undergoes strict quality inspection, dimensional verification, and material testing before dispatch, ensuring dependable performance even in the harshest service conditions.
As an experienced ASTM B366 C276 Fittings Supplier and Alloy C276 Pipe Fittings Exporter, we serve customers across the Middle East, Europe, Asia, Africa, and North America with reliable delivery and competitive pricing.
What are ASTM B366 Hastelloy C276 Fittings?
ASTM B366 Hastelloy C276 Fittings are nickel alloy butt weld fittings manufactured from Hastelloy C276, a low-carbon nickel-molybdenum-chromium alloy designated as UNS N10276 and Werkstoff Nr 2.4819. The ASTM B366 specification covers factory-made wrought nickel alloy fittings for pressure piping systems.
These fittings are engineered to handle highly corrosive chemicals, chloride-containing media, oxidizing acids, reducing acids, and seawater environments. Their low carbon content minimizes carbide precipitation during welding, maintaining corrosion resistance in welded sections.
Common products include:
- 45° Elbows
- 90° Elbows
- Long Radius Elbows
- Short Radius Elbows
- Equal Tees
- Reducing Tees
- Concentric Reducers
- Eccentric Reducers
- Pipe Caps
- Stub Ends
- Crosses
- Custom Fabricated Fittings

Features of Alloy C276 Fittings
Our Alloy C276 Fittings are preferred across industries because they offer:
- Exceptional resistance to pitting corrosion
- Outstanding resistance to crevice corrosion
- Excellent oxidation resistance
- High mechanical strength
- Superior weldability
- Excellent fabrication properties
- Long service life
- Resistance to wet chlorine gas
- Suitable for high-temperature service
- Low maintenance requirements
These properties make Nickel Alloy C276 Fittings one of the most reliable solutions for critical process piping systems.
NACE MR0175 Hastelloy C276 Fittings
Our NACE MR0175 Hastelloy C276 Fittings are suitable for sour service environments commonly found in oil and gas production.
The alloy performs exceptionally well in hydrogen sulfide (H₂S) containing environments and offers excellent resistance to sulfide stress cracking, making it a preferred choice for offshore platforms, refineries, and petrochemical plants.


ASTM B366 Hastelloy C276 Fittings Specifications
| Specification | Details |
| Product | ASTM B366 Hastelloy C276 Fittings |
| Material Grade | Hastelloy C276 |
| ASTM Standard | ASTM B366 |
| ASME Standard | ASME SB366 Hastelloy C276 Fittings |
| UNS Number | UNS N10276 Pipe Fittings |
| Werkstoff No. | Werkstoff Nr 2.4819 Fittings |
| Type | Butt Weld Fittings |
| Standard | ASME B16.9 Hastelloy C276 Butt weld Fittings |
| Sizes | ½” NB to 48″ NB |
| Wall Thickness | SCH 10 to SCH XXS |
| Manufacturing | Seamless & Welded |
| Surface Finish | Pickled, Bright, Polished, Sand Blasted |
| Testing | PMI, Hydro Test, Radiography, Dimensional Inspection |
ASTM B366 Hastelloy C276 Dimensions and Weight Chart
| Parameter | Details |
| Dimensional Standard | ASME B16.9 |
| Additional Standards | MSS SP-43, ASME B16.28 |
| Size Range | ½” to 48″ NB |
| Weight Calculation Factors | Size, Schedule, Fitting Type |
| Available Documents | Dimensions Chart, Weight Chart, Technical Datasheets |
| Tolerances | As per ASTM and ASME standards |
ASTM B366 Hastelloy C276 Fittings Chemical Composition
| Element | Composition (%) |
| Nickel (Ni) | Balance |
| Molybdenum (Mo) | 15.0 – 17.0 |
| Chromium (Cr) | 14.5 – 16.5 |
| Iron (Fe) | 4.0 – 7.0 |
| Tungsten (W) | 3.0 – 4.5 |
| Cobalt (Co) | 2.5 Max |
| Manganese (Mn) | 1.0 Max |
| Vanadium (V) | 0.35 Max |
| Silicon (Si) | 0.08 Max |
| Phosphorus (P) | 0.04 Max |
| Sulfur (S) | 0.03 Max |
| Carbon (C) | 0.01 Max |
ASTM B366 Hastelloy C276 Fittings Mechanical Properties
| Property | Value |
| Tensile Strength | 690 MPa (100 ksi) Min |
| Yield Strength (0.2% Offset) | 283 MPa (41 ksi) Min |
| Elongation | 40% Min |
| Hardness | 100 HRB Max (Approx. 220 HB Max) |
| Density | 8.89 g/cm³ |
| Melting Range | 1325–1370°C (2417–2498°F) |
| Modulus of Elasticity | 205 GPa |
| Electrical Resistivity | 1.30 µΩ·m |
| Thermal Conductivity (at 20°C) | 10.2 W/m·K |
| Specific Heat | 427 J/kg·K |
| Coefficient of Thermal Expansion (20–100°C) | 11.2 µm/m·°C |
Low Carbon Hastelloy C276 Fittings Physical Properties
| Property | Value |
| Material Grade | Hastelloy C276 |
| UNS Number | N10276 |
| Werkstoff Number | 2.4819 |
| Density | 8.89 g/cm³ |
| Melting Point | 1325–1370°C |
| Magnetic Property | Non-Magnetic (Annealed Condition) |
| Thermal Conductivity | 10.2 W/m·K |
| Electrical Resistivity | 1.30 µΩ·m |
| Modulus of Elasticity | 205 GPa |
| Specific Heat | 427 J/kg·K |
ASTM B366 UNS N10276 Seamless Fittings Equivalent Grades
| Standard | Grade |
| ASTM | B366 Hastelloy C276 |
| ASME | SB366 Hastelloy C276 |
| UNS | N10276 |
| Werkstoff | 2.4819 |
| EN | NiMo16Cr15W |
| ISO | NW 0276 |
Applications of Hastelloy C276 Pipe Fittings
Hastelloy C276 Pipe Fittings are extensively used in industries requiring superior corrosion resistance.
Major applications include:
- Chemical Processing Plants
- Petrochemical Industry
- Oil & Gas Processing
- Marine Engineering
- Offshore Platforms
- Pharmaceutical Plants
- Fertilizer Plants
- Desalination Plants
- Power Generation
- Heat Exchangers
- Pollution Control Equipment
- Pulp & Paper Industry
- Nuclear Facilities
- Food Processing Industry
Related Hastelloy Fittings Grades
Why Choose Us as Your ASTM B366 C276 Fittings Supplier?
As a reliable ASTM B366 C276 Fittings Supplier, we focus on delivering products that meet international quality expectations while ensuring excellent customer support throughout the procurement process.
Reasons customers choose us include:
- High-quality certified materials
- Competitive pricing
- Large ready stock
- Fast delivery schedules
- Worldwide exports
- Complete material traceability
- Third-party inspection support
- Custom manufacturing capabilities
- Experienced technical assistance
- Secure export packaging
Whether you require standard fittings or project-specific solutions, we provide products designed for long-term performance in demanding industrial environments.
Global Reach
ASC LLP boasts a robust global presence and is committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B366 Hastelloy C276 Fittings. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.

