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HPM® C276 • UNS N10276

HPM® C 276 is a Nickel-Molybdenum-Chromium-Tungsten alloy with a high level of corrosion resistance. A low carbon content enables the alloy to resist intergranular corrosion at weld joints. These attributes make it an important alloy for the most severe chemical processing applications.

The alloy is readily formed from the annealed temper.All standard welding methods except oxy-acetylene can be used for joining.

Available Sizes:

HPM® C 276 is available from Hamilton Precision Metals as strip product in thicknesses From 0.0005” to 0.050” (0.0127 mm to 1.27 mm) and widths up to 12.0” (304.8 mm). The material conforms to ASTM B575 and UNS N10276.

Nominal Composition
HPM® C 276 NOMINAL COMPOSITION
Molybdenum 16.0%
Chromium 15.6%
Iron 5.7%
Tungsten 3.6%
Carbon 0.004%
Nickel Balance


Mechanical Properties
HPM® C 276 MECHANICAL PROPERTIES
ANNEALED COLD ROLLED
Ultimate Tensile Strength 130,000 PSI 240,000 PSI
Yield Strength (0.2% Offset) 70,000 PSI 220,000 PSI
Elongation in 2” * 40% 2%
Modulus of Elasticity (Tension) 29.8 X 106 PSI -
Poisson’s Ratio 0.304 -

The measured elongation will be less as thickness decreases to 0.002” and less.
These values may be adjusted by control of process variables – consult HPM for desired values.


Physical Properties
HPM® C 276 PHYSICAL PROPERTIES
Density 0.321 lbs./cu.in.
Melting Point (Approx.) 1325°C
Electrical Resistivity @ R.T. 130 Microhm·cm
Thermal Expansion Coefficient (25° to 100°C) 11.2 x 10-6/ °C
Thermal Conductivity @ R.T 10.2 W/m·K
Magnetic Attraction None

Typical values to guide alloy selection but are not a guarantee of minimum or maximum.