Hastelloy C276
Hastelloy C276 is a nickel based corrosion resistant alloy containing about 57% nickel, 16% to 18% molybdenum, and 14.5% to 16.5% chromium, with smaller amounts of tungsten and iron. It resists reducing media such as sulfuric and hydrochloric acid, as well as oxidizing acids, chloride solutions, and organic acids. The source lists continuous service up to 1093℃, together with good toughness and fatigue resistance. Typical uses include chemical reactors, heat exchangers, piping, oil and gas equipment, waste incineration, and wastewater treatment equipment.
Product details
Chemical composition
| HastelloyC276 | C | Si | Mn | P | S | Ni | Cr | Mo | Fe | W | V | Co |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | – | – | – | – | – | – | 14.5 | 15.0 | 4.0 | 3.0 | – | – |
| max | 0.01 | 0.08 | 1.0 | 0.04 | 0.03 | Bal | 16.5 | 17.0 | 7.0 | 4.5 | 0.35 | 2.5 |
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Grade equivalents
| English Item | UNS | W.Nr. | JIS | GB/T | Other Grades |
|---|---|---|---|---|---|
| Hastelloy C276 HC276 Alloy C276 | N10276 | 2.4819 NiMo16Cr15W4 | NW0276 | NS334 NS3304 | Inconel 276 Inconel C-276 54Ni-16Mo-15Cr |
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Physical properties
| Density g/cm³ | 8.9 |
|---|---|
| Melting range ℃ | 1325~1370 |
| Thermal conductivity (100℃) λ/(W/m•℃) | 10.2 |
| Specific heat J/kg•℃ | 407 |
| Elastic modulus GPa | 208 |
| Shear modulus GPa | 79 |
| Electrical resistivity μΩ•m | 1.25 |
| Linear expansion coefficient a/10-6℃-1 | 11.7(20~100℃) |
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Mechanical properties
| Tensile strength Rm N/mm | ≥730 |
|---|---|
| Yield strength RP0.2 N/mm | ≥ 363 |
| Elongation % | ≥ 30 |
| Hardness HB | ≤100 |
| *After solution heat treatment | |
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Applications
- Pulp and paper equipment, including digesters and bleaching vessels
- Scrubbers, reheaters, and wet-gas fans in flue gas desulfurization (FGD) systems
- Equipment and components operating in sour-gas environments
- Reactors for acetic acid and other acidic products
- Sulfuric acid condensers
- Methylene diphenyl diisocyanate (MDI) service
- Production and processing of impure phosphoric acid
Available product forms
- Round Bar
- Wire
- Forgings
- Plate
- Strip
- Seamless Pipe
- Welded Pipe
- Capillary Tube
- Flanges
- Pipe Fittings
- Non-standard Custom Parts
Values follow the Milike materials catalogue and are provided for preliminary review. Confirm the applicable purchase specification, heat treatment condition, and inspection requirements before final material selection.
- Heat and batch traceability
- PMI testing available
- Cut-to-size processing
- Material certificates on request
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