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C71640 Copper-nickel vs. C69700 Brass

Both C71640 copper-nickel and C69700 brass are copper alloys. They have 66% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C71640 copper-nickel and the bottom bar is C69700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 52
41
Tensile Strength: Ultimate (UTS), MPa 490 to 630
470
Tensile Strength: Yield (Proof), MPa 190 to 460
230

Thermal Properties

Latent Heat of Fusion, J/g 240
240
Maximum Temperature: Mechanical, °C 260
160
Melting Completion (Liquidus), °C 1180
930
Melting Onset (Solidus), °C 1120
880
Specific Heat Capacity, J/kg-K 410
400
Thermal Conductivity, W/m-K 29
43
Thermal Expansion, µm/m-K 15
19

Otherwise Unclassified Properties

Base Metal Price, % relative 40
26
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 5.0
2.7
Embodied Energy, MJ/kg 73
44
Embodied Water, L/kg 280
310

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 750
250
Stiffness to Weight: Axial, points 8.7
7.3
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
16
Strength to Weight: Bending, points 16 to 18
16
Thermal Diffusivity, mm2/s 8.2
13
Thermal Shock Resistance, points 16 to 21
16

Alloy Composition


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Copper (Cu), % 61.7 to 67.8
75 to 80
Iron (Fe), % 1.7 to 2.3
0 to 0.2
Lead (Pb), % 0 to 0.050
0.5 to 1.5
Manganese (Mn), % 1.5 to 2.5
0 to 0.4
Nickel (Ni), % 29 to 32
0
Silicon (Si), % 0
2.5 to 3.5
Zinc (Zn), % 0 to 1.0
13.9 to 22
Residuals, % 0 to 0.5
0 to 0.5