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Hastelloy C276 Round Bars Supplier in Mumbai, India - ASTM B574 UNS N10276
Nicorex Alloys is an ISO 9001 / ISO 14001 certified importer, stockist, and trading company of Hastelloy C276 round bars based in Mumbai, India. Alloy C-276 (UNS N10276, Werkstoff 2.4819, EN NiMo16Cr15W) is a nickel-molybdenum-chromium-tungsten alloy manufactured to ASTM B574 / ASME SB574 and AMS 5750. Our products of the given specification are supplied throughout the country and worldwide.
The 16% Mo + 4% W combination is what makes C276 the industry benchmark for reducing-acid and chloride-rich service. That tungsten addition sets it apart from every other C-family alloy, giving unmatched corrosion-resistance service to pitting and crevice attack in HCl, H₂SO₄, and chloride process streams, performing for longer. Minimum tensile reaches 690 MPa (100 ksi) with 283 MPa (41 ksi) yield and 40% elongation in the solution-annealed condition at 1121°C (2050°F). Hastelloy C276 density is 8.89 g/cm³. Melting range: 1325-1370°C (2455-2500°F). Maximum service: 1038°C (1900°F) in oxidising atmospheres. NACE MR-01-75 / ISO 15156 listed for sour gas service.
The diameters vary from 3 mm to 500 mm, with a length of up to 6000 mm. The shapes include round bars, hex bars, flat bars, square bars, rectangular bars, forged bars, hollow bars, and rods. The conditions of heat and processing include solution annealed, cold drawn, hot rolled, and forged. The surface finishes include black, bright, turned, peeled, and polished. The welding process uses ERNiCrMo-4 (AWS A5.14) matching filler wire. All shipments are accompanied by EN 10204 3.1 mill test certificates, PMI reports, and traceability documents.
Hastelloy C276 Round Bar Specifications
| Standards | ASTM B574 / ASME SB574 |
|---|---|
| AMS | 5750 (Round Bar) |
| Diameter | 3 – 500 mm; Hex 2-100 mm A/F; Square 4-100 mm |
| Length | 100 – 6000 mm (SRL, DRL, cut-to-length) |
| Condition | Solution Annealed at 1121°C (2050°F); Cold Drawn; Forged |
| Surface | Black, Bright, Turned, Peeled, Polished, Ground |
| Hardness | ≤241 HB (solution annealed) |
| Tolerance | h8-h13, k9-k12 |
Hastelloy C276 Round Bar vs Alloy C22 vs Inconel 625 - Selection Guide
| Parameter | C276 (N10276) | C22 (N06022) | 625 (N06625) |
|---|---|---|---|
| Mo / W | 16% / 4% | 13% / 3% | 9% / None |
| Cr | 16% | 22% | 21.5% |
| Yield (min) | 283 MPa | 310 MPa | 414 MPa |
| Reducing Acids | Best | Good | Moderate |
| Oxidising Acids | Good | Best | Good |
Chemical Composition of Hastelloy C276 Bars
| Element | Nickel (Ni) | Molybdenum (Mo) | Chromium (Cr) | Tungsten (W) | Iron (Fe) | Cobalt (Co) | Vanadium (V) | Silicon (Si) | Carbon (C) |
|---|---|---|---|---|---|---|---|---|---|
| Content (wt%) | Balance | 15.0 – 17.0 | 14.5 – 16.5 | 3.0 – 4.5 | 4.0 – 7.0 | 2.5 max | 0.35 max | 0.08 max | 0.01 max |
Mechanical Properties of ASTM B574 Hastelloy C276 Round Bars
| Property | Tensile Strength (min) | Yield 0.2% Offset (min) | Elongation (min) | Hardness (max) |
|---|---|---|---|---|
| Value | 690 MPa (100 ksi) | 283 MPa (41 ksi) | 40% | 241 HB |
Hastelloy C276 Round Bar Equivalent Grades
| Standard | UNS / Werkstoff | EN / BS | JIS | GOST |
|---|---|---|---|---|
| Designation | N10276 / 2.4819 | NiMo16Cr15W / NA21 | NW 0276 | ХН65МВУ |
Physical Properties of Hastelloy C276 Round Bars
Apply the physical properties, such as the density and melting point of Hastelloy C276, to determine accurate thermal expansion and material weights.
| Property | Density | Melting Range | Elastic Modulus | Thermal Conductivity (25°C) | Thermal Expansion (25-100°C) | Electrical Resistivity (25°C) | Magnetic Permeability |
|---|---|---|---|---|---|---|---|
| Value | 8.89 | 1325-1370 | 205 | 9.8 | 11.2 × 10⁻⁶ | 1.30 | 1.001 |
| Unit | g/cm³ | °C | GPa | W/m·°C | /°C | µΩ·m | Non-magnetic |
Get Hastelloy C276 Round Bars at Competitive Prices
Available Forms of Hastelloy C276 Bars
Hastelloy C276 Round Bar
Alloy C276 Hex Bar
Hastelloy C276 Flat Bar
Nickel Alloy C276 Square Bar
C276 Forged Round Bar
Hastelloy C276 Hollow Bar
UNS N10276 Rectangular Bar
Hastelloy C276 Rod
Machining, Hot Working & Heat Treatment of Hastelloy C276 Round Bars
Hastelloy C276 machining is moderate to difficult. Use carbide inserts at 15-25 m/min with positive rake, rigid setups, and flood coolant. Replace tools at 0.38 mm wear land. Hot forge from 1232°C (2250°F) down to 954°C (1750°F) with moderate reductions. Re-anneal after all hot work.
Solution anneal at 1121°C (2050°F), water quench. Cold-worked parts with >7% outer fibre elongation must be re-annealed. Stress relief at 650°C is not recommended (detrimental phase risk). Weld by GTAW, GMAW, or SMAW using ERNiCrMo-4 (AWS A5.14) or ENiCrMo-4 (AWS A5.11). ERNiCrMo-3 (625 type) is an acceptable alternative. No preheat or PWHT required.
Industries Using Hastelloy C276 Round Bars
- Reactor internals, agitator shafts, and heat exchanger baffles for HCl, H₂SO₄, and chlorine-bearing streams
- Wellhead bars, downhole mandrels, and subsea valve stems per NACE MR-01-75 for H₂S + CO₂ + chloride service.
- Scrubber shafts and damper components in sulfuric/hydrochloric condensate
- Mixer shafts in ClO₂ and hypochlorite bleach service.
- Reactor shafts and centrifuge parts for aggressive solvents and acid intermediates
- Pump shafts and mooring hardware in seawater and brine
- Incinerator internals and scrubber shafts for mixed corrosive leachate.
How to Order Hastelloy C276 Round Bars from Nicorex Alloys
- Bar Form - Round, Hex, Flat, Square, Forged, Threaded
- Diameter / Cross-Section Size - Specify mm or inches
- Length - Sandard random, cut-to-length, custom
- Quantity - In kg, MT, or number of pieces
- Condition - Solution Annealed, Cold Drawn, As-Forged
- Surface Finish - Black, Bright, Peeled, Ground, Polished
- Tolerance Class - h8, h9, h11, etc.
- Standard - ASTM B574 / ASME SB574
- Additional Testing - MTC 3.1, MTC 3.2, PMI, UT, NACE TM0177, HIC per NACE TM0284
- Third-Party Inspection - TPI by Lloyd's, BV, SGS, DNV if required
- Packaging - Standard bundles, wooden cases, export-grade
- Delivery Destination - Domestic India / international export
Frequently Asked Questions
What is the Price of Hastelloy C276 Round Bar per Kg in India?
Prices fluctuate with LME nickel and molybdenum rates, diameter, and finish. Indicative range: ₹4,500-8,000+ per kg (2025). Contact Nicorex Alloys for a current quotation.
What ASTM Standard covers Hastelloy C276 Round Bars?
What Filler Metal is Used for Welding C276 Bars?
Is Hastelloy C276 Round Bar Magnetic?
No. Magnetic permeability is 1.0. Suits MRI-adjacent equipment and subsea instrumentation.
What is the maximum operating temperature for Hastelloy C276 round bar?
1038°C (1900°F) in oxidising atmospheres. Prolonged exposure above 650°C risks intermetallic precipitation.
What Mill Test Certificates does Nicorex Alloys provide?
What is the Minimum Tensile Strength per ASTM B574?
690 MPa (100 ksi) with 283 MPa yield and 40% elongation. These are guaranteed minimums; typical mill values are higher.