Hastelloy™ C-276 Material Property Data Sheet

Do you need custom fasteners created with Hastelloy™ C-276? Since our inception, Elgin Fastener Group has met every challenge of providing Quality, Timely, Cost-effective solutions for specialty fastener applications. Every product is built to your specifications, using your prints if necessary.

Below are the technical specifications of the Hastelloy™ C-276 Bar Stock we have available to meet your needs.

Hastelloy® C-276 alloy

Subcategory: Metal; Nickel Base; Superalloy

Key Words: ASME SB-622, ASME SB-626 SCC resistant, flue-gas desulfurization systems, UNS N10276, ASME SB-574, ASME SB-575, ASME SB-619

Component Wt. %
C Max 0.01
Co Max 2.5
Cr 14.5 – 16.5
Fe 4 – 7
Mn Max 1
Mo 15 – 17
Ni 57
P Max 0.025
S Max 0.01
Si Max 0.08
V Max 0.35
W 3 – 4.5


Material Notes:

Versatile corrosion-resistant alloy, usually does not need to be solution heat treated after welding and has vastly improved fabricability, excellent resistance to localized corrosion and to both oxidizing and reducing media. Resists formation of grain-boundary precipitates and is therefore suitable for chemical process applications in the as-welded condition. C-276 has excellent resistance to strong oxidizers like ferric and cupric chlorides, hot contaminated media (organic and inorganic), chlorine, formic and acetic acids, acetic anhydride, seawater, brine solutions, sulfur compounds, wet chlorine gas, hypochlorite and chlorine dioxide.

Data provided by the manufacturer, Haynes International, Inc.

Physical Properties Metric English Comments
Density 8.89 g/cc 0.321 lb/in³ at RT
Mechanical Properties
Hardness, Rockwell B 90 90 Average room temperature hardness for sheet (average of 49 tests); 87 HRB average room temperature hardness for plate (average of 35 tests)
Hardness, Vickers 191 191 Conversion from Rockwell B hardness.
Tensile Strength, Ultimate 826.7 MPa 120000 psi
Tensile Strength, Yield 364.7 MPa 52900 psi at 0.2% offset
Elongation at Break 59 % 59 % in 50.8 mm
Modulus of Elasticity 205 GPa 29700 ksi RT
Modulus of Elasticity at Elevated Temperature 176 GPa 25500 ksi heat treated at 1121°C (2050°F) and rapid quenched; 538°C
Modulus of Elasticity at Elevated Temperature 182 GPa 26400 ksi heat treated at 1121°C (2050°F) and rapid quenched; 427°C
Modulus of Elasticity at Elevated Temperature 188 GPa 27300 ksi heat treated at 1121°C (2050°F) and rapid quenched; 316°C
Modulus of Elasticity at Elevated Temperature 195 GPa 28300 ksi heat treated at 1121°C (2050°F) and rapid quenched; 204°C
Charpy Impact 357 J 263 ft-lb at -196°C solution heat treated at 1121°C (2050°F), rapid quenched; 339 J at -196°C aged 100 hours at 260°C; 130 J at -196°C aged 100 hours at 538°C (1000°F); 87 J at -196°C aged 1000 hours at 538°C (1000°F)
Electrical Properties
Electrical Resistivity 0.00013 ohm-cm 0.00013 ohm-cm 24°C (75°F)
Thermal Properties
CTE, linear 20°C 11.2 µm/m-°C 6.22 µin/in-°F 24-93°C (75-200°F)
CTE, linear 250°C 12 µm/m-°C 6.67 µin/in-°F 24-204°C (75-400°F)
CTE, linear 500°C 12.8 µm/m-°C 7.11 µin/in-°F 24-316°C (75-600°F)
CTE, linear 500°C 13.2 µm/m-°C 7.33 µin/in-°F 24-538°C (75-1000°F)
CTE, linear 500°C 13.2 µm/m-°C 7.33 µin/in-°F 24-427°C (75-800°F)
Heat Capacity 0.427 J/g-°C 0.102 BTU/lb-°F RT
Thermal Conductivity 10.2 W/m-K 70.8 BTU-in/hr-ft²-°F 38°C
Thermal Conductivity 7.2 W/m-K 50 BTU-in/hr-ft²-°F -168°C
Thermal Conductivity 8.6 W/m-K 59.7 BTU-in/hr-ft²-°F -73°C
Thermal Conductivity 9.4 W/m-K 65.2 BTU-in/hr-ft²-°F -18°C
Thermal Conductivity at Elevated Temperature 11.1 W/m-K 77 BTU-in/hr-ft²-°F 93°C
Thermal Conductivity at Elevated Temperature 13 W/m-K 90.2 BTU-in/hr-ft²-°F 204°C
Thermal Conductivity at Elevated Temperature 15 W/m-K 104 BTU-in/hr-ft²-°F 316°C
Thermal Conductivity at Elevated Temperature 16.9 W/m-K 117 BTU-in/hr-ft²-°F 427°C
Thermal Conductivity at Elevated Temperature 19 W/m-K 132 BTU-in/hr-ft²-°F 538°C
Melting Point 1323 – 1371 °C 2410 – 2500 °F
Solidus 1323 °C 2410 °F
Liquidus 1371 °C 2500 °F

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