Corrosion Resistant Hastelloy C-276 Round Bar Nickel Chromium Molybdenum Alloy
Product Details
Corrosion Resistant Hastelloy C-276
,Hastelloy C-276 Round Bar
,Nickel Chromium Molybdenum Alloy
Alloy C276 is a versatile nickel-chromium-molybdenum superalloy offering proven resistance to pitting, stress-corrosion cracking, and oxidizing agents like chlorine. Available in sheet, plate, bar, pipe, and tube forms. Certified supplier with competitive pricing and global delivery — ideal for chemical processing, pollution control, and marine applications. Request a quote today.
| Parameter | Details |
|---|---|
| Product Name | Hastelloy C-276 / Alloy C-276 / HC-276 |
| UNS Designation | N10276 |
| Werkstoff Number | 2.4819 |
| EN Designation | NiMo16Cr15W |
| Chinese Standard | NS334 |
| French Standard | NC17D |
| Common Trade Names | Hastelloy C-276, Alloy C-276, Inconel C-276 |
| Product Forms | Plate, Sheet, Strip, Rod, Bar, Wire, Seamless Pipe, Welded Pipe, Seamless Tube, Welded Tube, Forgings, Fittings |
| Supply Condition | Solution Annealed (Solid Solution Treatment) |
| Available Dimensions | Sheet/Plate: 0.3mm – 50mm thickness; Tube: 6mm – 219mm OD (custom available) |
| Standard Length | 2000mm, 2438mm, 3000mm, 6000mm (or as required) |
| Custom Sizes | Available upon request |
| Surface Finish | Annealed, Pickled, Descaled |
| NACE Compliance | NACE MR0175 / ISO 15156-3 (for sour gas service) |
The chemical composition of Hastelloy C-276 (UNS N10276) complies with ASTM B575, B574, and B622 standards. The extremely low carbon content (≤0.01%) distinguishes C-276 from earlier C-type alloys.
| Element | Content (%) | Role |
|---|---|---|
| Nickel (Ni) | Balance (≥52%) | Provides SCC resistance and austenitic stability |
| Chromium (Cr) | 14.5 – 16.5 | Enhances oxidation and corrosion resistance |
| Molybdenum (Mo) | 15.0 – 17.0 | Provides resistance to reducing acids and pitting |
| Tungsten (W) | 3.0 – 4.5 | Further enhances localized corrosion resistance |
| Iron (Fe) | 4.0 – 7.0 | Improves metallurgical stability |
| Cobalt (Co) | ≤ 2.5 | Residual element |
| Manganese (Mn) | ≤ 1.00 | Aids in hot workability |
| Vanadium (V) | ≤ 0.35 | Trace element |
| Silicon (Si) | ≤ 0.08 | Improves oxidation resistance (controlled to low level) |
| Carbon (C) | ≤ 0.01 | Key feature – prevents intergranular attack |
| Phosphorus (P) | ≤ 0.04 | Minimized to maintain ductility |
| Sulfur (S) | ≤ 0.03 | Controlled for hot workability |
Actual mill test certificates (EN 10204 3.1) available per batch.
| Element | Hastelloy C (max %) | Hastelloy C-276 (max %) |
|---|---|---|
| Carbon (C) | 0.08 | 0.01 |
| Silicon (Si) | 1.00 | 0.08 |
| Key Difference | Higher C and Si | Ultra-low C + W for superior corrosion resistance |
Both alloys contain nickel as a balance (minimum ~52%). C-276's extremely low carbon and silicon content eliminates intergranular precipitation after welding, making it the superior choice for welded fabrications in corrosive service.
| Property | Metric (MPa) | Imperial (ksi) |
|---|---|---|
| Tensile Strength (Rm) | ≥ 690 | ≥ 100 |
| Yield Strength 0.2% Proof (Rp0.2) | ≥ 283 | ≥ 41 |
| Elongation (A) | ≥ 40% | ≥ 40% |
| Hardness (HRB) | ≤ 100 | ≤ 100 |
| Density | 8.89 g/cm³ | 0.321 lb/in³ |
| Melting Point | 1325 – 1370°C | 2417 – 2500°F |
| Modulus of Elasticity | 205 GPa | 29.7 x 10³ ksi |
| Specific Heat | 425 J/kg·K | — |
| Thermal Conductivity | 11.2 W/m·K (at 20°C) | — |
| Temperature | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| -196°C (-321°F) | 965 | 565 | 45 |
| 21°C (70°F) | 790 | 415 | 50 |
| 93°C (200°F) | 725 | 380 | 50 |
| 204°C (400°F) | 710 | 345 | 50 |
| 316°C (600°F) | 675 | 315 | 55 |
| 427°C (800°F) | 655 | 290 | 60 |
| 538°C (1000°F) | 640 | 270 | 60 |
*Note: C-276 retains good ductility even at cryogenic temperatures, making it suitable for low-temperature services.*
Solution annealed condition: -200°C to +400°C (-330°F to +750°F) for continuous service
Hastelloy C-276 is available in all standard mill forms and complies with international specifications.
| Standard | Specification |
|---|---|
| ASTM | B574, B564 |
| ASME | SB574, SB564 |
| DIN | DIN 17752, DIN 17753, DIN 17754 |
| ISO | ISO 9723, ISO 9724, ISO 9725 |
| Standard | Specification |
|---|---|
| ASTM | B575, B906 |
| ASME | SB575, SB906 |
| DIN | DIN 17750 |
| EN | EN 10028-7, EN 10095 |
| Standard | Specification |
|---|---|
| ASTM | B619, B622, B626, B775, B829 |
| ASME | SB619, SB622, SB626, SB775, SB829 |
| DIN | DIN 17751 |
| Product | Standard |
|---|---|
| Fittings | ASTM B366, ASME SB366 |
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