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ASTM B575 Alloy C-276 Plate | UNS N10276 | Hastelloy C-276
| MOQ: | 5Ton |
| Price: | Based on grade, size, surface, processing, quantity and current raw material market price. |
| Standard Packaging: | Standard seaworthy export packing with bundles, waterproof wrapping, pallets or wooden cases. |
| Delivery Period: | 7-15 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| Supply Capacity: | Stock supply, regular production and custom manufacturing available. |
Shaanxi Shangyou Stainless Steel Co., Ltd. supplies Nickel Alloy C-276, also known as Hastelloy C-276, identified as UNS N10276 and Werkstoff 2.4819, in plate, sheet, and strip form according to ASTM B575 / ASME SB-575.
Nickel Alloy C-276 is a low-carbon nickel-molybdenum-chromium-tungsten alloy developed for outstanding corrosion resistance in a wide range of severe environments. The alloy's high molybdenum content (15-17%) provides excellent resistance to pitting and crevice corrosion, while the chromium content (14.5-16.5%) offers resistance to oxidizing media. The addition of tungsten (3-4.5%) enhances resistance to reducing environments. The low carbon content (0.010% max) minimizes carbide precipitation during welding, maintaining corrosion resistance in as-welded structures. Alloy C-276 is readily fabricated and does not generally require post-weld heat treatment.
| Item | Supply Information |
|---|---|
| Alloy Grade | Nickel Alloy C-276 / Hastelloy C-276 |
| UNS Number | N10276 |
| EN / Werkstoff Number | 2.4819 |
| EN Material Symbol | NiMo16Cr15W |
| Plate / Sheet / Strip Standard | ASTM B575 / ASME SB-575 |
| Product Forms | Plate, sheet, strip |
| Thickness Range (Stock) | 3 mm – 50 mm |
| Supply Condition | Hot rolled or cold rolled, solution annealed, and descaled |
| Surface | Pickled, ground or polished |
| Testing | Chemical analysis, tensile, hardness, PMI, and dimensional inspection |
| Inspection Documents | EN 10204 3.1 MTC; third-party inspection optional |
| Element | Weight % (min) | Weight % (max) |
|---|---|---|
| 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 |
| Carbon (C) | — | 0.010 |
| Silicon (Si) | — | 0.08 |
| Manganese (Mn) | — | 1.00 |
| Vanadium (V) | — | 0.35 |
| Phosphorus (P) | — | 0.040 |
| Sulfur (S) | — | 0.030 |
Composition per ASTM B575 requirements.
| Property | Typical Reference |
|---|---|
| Density | 8.89 g/cm3 |
| Melting Range | 1,325 – 1,370°C |
| Modulus of Elasticity | 205 – 208 GPa at 20°C |
| Thermal Conductivity | 9.8 W/m-K |
| Electrical Resistivity | 130 µΩ·cm |
| Coefficient of Expansion (20-300°C) | ~12.2 µm/m-°C |
| Tensile Strength, Annealed (ASTM B575) | 690 MPa (100 ksi) minimum |
| Yield Strength (0.2%), Annealed (ASTM B575) | 283 – 347 MPa (41 – 50 ksi) minimum |
| Elongation, Annealed (ASTM B575) | 40% minimum |
| Hardness, Annealed | HRB 89 – 100 max |
| Operating Temperature Range | Cryogenic to 400°C (750°F) |
| Heat Treatment | Solution annealed at ~1,120°C; not age-hardenable |
| Available Forms | Plate, sheet, strip, bar, pipe, tube |
| Product Standards | ASTM B575, ASME SB-575, ASTM B906 |
Actual properties depend on product form, dimensions, and the specified standard.
Solution Annealed
Alloy C-276 is normally supplied in the solution-annealed condition. The standard solution annealing treatment is performed at approximately 2,050°F (1,120°C) followed by rapid cooling. The low carbon content (0.010% max) minimizes carbide precipitation during welding, making the alloy suitable for most chemical process applications in the as-welded condition without the need for post-weld heat treatment.
Cold Working
Alloy C-276 is not age-hardenable – strength increases only through cold working. Annealed material typically exhibits tensile strength of 120 – 160 ksi (830 – 1,100 MPa), while spring temper can achieve 200 – 240 ksi (1,380 – 1,655 MPa).
Alloy C-276 is regarded as one of the most versatile corrosion-resistant alloys available, offering outstanding resistance to a wide range of aggressive media.
Key Corrosion Characteristics:
- Excellent resistance to pitting and crevice corrosion due to high molybdenum (15-17%) and tungsten (3-4.5%) content
- Resists stress-corrosion cracking in chloride environments
- Resists both oxidizing and reducing media: chromium provides oxidizing resistance; molybdenum and tungsten provide reducing resistance
- Resistant to wet chlorine gas, hypochlorite, and chlorine dioxide solutions
- Exceptional resistance to ferric and cupric chlorides, solvents, formic and acetic acids, acetic anhydride
- Excellent resistance to sulfuric acid, hydrochloric acid (dilute), phosphoric acid
- Low carbon content minimizes grain boundary precipitation in the weld heat-affected zone
- Approved for sour service per NACE MR0175 / ISO 15156
Selection Considerations:
- One of the few alloys suitable for wet chlorine gas service
- Recommended when no single corrosion mechanism dominates and the process fluid combines multiple aggressive species
- For applications requiring even higher resistance to oxidizing conditions, Alloy C-22 may be preferred
- For pure reducing acid service, Alloy B-3 offers superior performance
- Final selection must consider the specific medium, concentration, temperature, and exposure conditions
- Chemical Processing: Reactor vessels, heat exchangers, evaporators, distillation columns, piping for mixed-acid and chloride-containing environments
- Flue Gas Desulfurization: Scrubber internals, outlet ducts, dampers, reheaters, fans and fan housings
- Pulp and Paper: Digesters, bleach plants, equipment in high-chemical-stress processes
- Waste Treatment: Incinerator off-gas scrubbing systems, hazardous waste handling
- Oil and Gas: Sour gas wellhead components, pipeline cladding
- Pollution Control: Stack liners, ducting, scrubber systems
Available quality-control services include:
- Heat-number traceability
- Chemical composition verification
- Tensile, yield and elongation testing
- Hardness inspection
- Dimensional and surface inspection
- Positive Material Identification (PMI)
- Ultrasonic testing
- Dye penetrant inspection
- Heat-treatment records
- EN 10204 3.1 material certificate
For an accurate quotation, please provide:
Alloy Grade · Standard · Product Form · Dimensions (Thickness × Width × Length) · Quantity · Heat Treatment · Inspection Requirement · Application · Working Temperature · Destination Port
For corrosive environments, also provide:
Chemical Medium · Concentration · Temperature · Oxidizing or Reducing Conditions
- Request ASTM B575 Alloy C-276 Plate Quote
- Upload Drawing or MTO
- Check Available Stock
- Ask for Alloy Selection Support
ASTM B575 Alloy C-276 plate (UNS N10276) is a low-carbon nickel-molybdenum-chromium-tungsten alloy plate with outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking in severe environments.
The UNS designation is N10276; the European Werkstoff number is 2.4819; the EN material symbol is NiMo16Cr15W.
ASTM B575 / ASME SB-575 applies to Alloy C-276 plate, sheet and strip.
Stock thickness ranges from 3 mm to 50 mm, with custom sizes available on request.
No. Alloy C-276 is not age-hardenable. It is supplied in the solution-annealed condition and is strengthened only through cold working.
It resists wet chlorine gas, ferric and cupric chlorides, sulfuric acid, hydrochloric acid, phosphoric acid, formic/acetic acids, seawater, brine, hypochlorite solutions, and many mixed acid environments.
Yes. Alloy C-276 has excellent resistance to chloride stress-corrosion cracking and is considered highly resistant in most chloride environments.
Alloy C-276 has higher molybdenum (15-17%) and tungsten (3-4.5%), making it more suited for reducing acid environments. Alloy 22 has higher chromium (20-22.5%) and is preferred when oxidizing conditions dominate.
Yes. Alloy C-276 exhibits excellent weldability with minimal risk of sensitization or intergranular attack. The low carbon content allows service in the as-welded condition without post-weld heat treatment.
Please provide the standard (ASTM B575), product form (plate), thickness, width, length, quantity, inspection requirements, application, working temperature and destination port. For corrosive environments, also specify the chemical medium and concentration.
