Valve Stem Nickel Alloy Valve Parts Petrochemical Hastelloy C-276 UNS N10276
Hastelloy C-276 is a nickel-molybdenum-chromium superalloy with an addition of tungsten designed to have excellent corrosion resistance in a wide range of severe environments. This material is known for its outstanding resistance to pitting, crevice corrosion, and stress-corrosion cracking.
Ni | Co | Cr | Mo | W | P | Fe |
Remainder | 2.5max | 14.5-16.5 | 15.0-17.0 | 3.0-4.5 | 0.04max | 4.0-7.0 |
Si | Mn | C | V | S | | |
0.08max | 1.0max | 0.01max | 0.35max | 0.03max | | |
- Density: Around 8.87 g/cm³
- Melting Point: Approx. 1325-1370 °C (2417-2500 °F)
- Thermal Conductivity: Varies with temperature, approximately 10.1 W/m·K at 20 °C
- Coefficient of Thermal Expansion: 11.2 µm/m-°C (20-100 °C)
- Tensile Strength: 690 MPa minimum
- Yield Strength (0.2% Offset): 283 MPa minimum
- Elongation: 40% minimum in 50 mm
Hastelloy C-276 offers superb resistance to a wide variety of chemical environments, including:
- Strong oxidizers like ferric and cupric chlorides
- Hot contaminated media (organic and inorganic)
- Chlorine
- Formic and acetic acids
- Acetic anhydride
- Seawater and brine solutions
Due to its high corrosion resistance, a valve stem made from Hastelloy C-276 is particularly suitable for harsh environments, such as:
- Chemical processing
- Pollution control
- Pulp and paper production
- Industrial and municipal waste treatment
- Pharmaceutical and food processing equipment
DINGSCO favors Hastelloy C-276 for valve components, especially valve stems, in applications where standard stainless steel or other materials might fail due to corrosion. Furthermore, its durability and reliability extend the lifespan of the valves, ensuring operational integrity even under harsh conditions.
Grade | UNS | Density (g/cm3) | Tensile Strength (MPa min) | Yield Strength (MPa min) | Reduction of Area min (%) | Elongation min (%) | Hardness (HRC) |
HASTELLOY C-276 | N10276 | 8.87 | 690MPa min | 283MPa min | / | 40% min | HRC 35 max |
Production Process:
