UNS C71640 Copper-Nickel
Nickel Alloys
O61 (annealed)
Property Overview
Density8.9g/cm³
Elastic Modulus140GPa
Tensile Strength490MPa
Yield Strength190MPa
Brinell HardnessUnknown
Maximum Service Temperature260°C
Chemical Composition
NI
29 to 32%
MN
1.5 to 2.5%
CU
61.7 to 67.8%
PB
0 to 0.050%
RES.
Residuals res. | | 0 to 0.5%
RESIDUALS RES.
0 to 0.5%
ZN
0 to 1.0%
FE
1.7 to 2.3%
Mechanical
Elastic (Young's, Tensile) Modulus
140 GPa
Poisson's Ratio
0.33
Shear Modulus
52 GPa
Tensile Strength: Ultimate (UTS)
490 MPa
Tensile Strength: Yield (Proof)
190 MPa
Physical
Density
8.9 g/cm 3
Thermal
Latent Heat of Fusion
240 J/g
Maximum Temperature: Mechanical
260 °C
Melting Completion (Liquidus)
1180 °C
Melting Onset (Solidus)
1120 °C
Specific Heat Capacity
410 J/kg-K
Thermal Conductivity
29 W/m-K
Thermal Diffusivity
8.2 mm 2 /s
Thermal Expansion
15 µm/m-K
Thermal Shock Resistance
16 points
Electrical
Electrical Conductivity: Equal Volume
7.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
7.1 % IACS
Calculated
Resilience: Unit (Modulus of Resilience)
130 kJ/m 3
Stiffness to Weight: Axial
8.7 points
Stiffness to Weight: Bending
20 points
Strength to Weight: Axial
15 points
Strength to Weight: Bending
16 points
Environmental
Base Metal Price
40 % relative
Embodied Carbon
5.0 kg CO 2 /kg material
Embodied Energy
73 MJ/kg
Embodied Energy
73 MJ/kg 31 x 10 3 BTU/lb
Embodied Water
280 L/kg
Embodied Water
280 L/kg 33 gal/lb
Registered Designations & Aliases
C71640UNS C71640 Copper-Nickel
Standards
ASTM B111 ASTM B111: Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock