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C71640 Copper-nickel vs. C34200 Brass

Both C71640 copper-nickel and C34200 brass are copper alloys. They have 64% of their average alloy composition in common. There are 26 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 C34200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 140
100
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 52
40
Tensile Strength: Ultimate (UTS), MPa 490 to 630
370 to 650
Tensile Strength: Yield (Proof), MPa 190 to 460
150 to 420

Thermal Properties

Latent Heat of Fusion, J/g 240
170
Maximum Temperature: Mechanical, °C 260
120
Melting Completion (Liquidus), °C 1180
910
Melting Onset (Solidus), °C 1120
890
Specific Heat Capacity, J/kg-K 410
380
Thermal Conductivity, W/m-K 29
120
Thermal Expansion, µm/m-K 15
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
26
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
29

Otherwise Unclassified Properties

Base Metal Price, % relative 40
24
Density, g/cm3 8.9
8.2
Embodied Carbon, kg CO2/kg material 5.0
2.6
Embodied Energy, MJ/kg 73
45
Embodied Water, L/kg 280
320

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 750
110 to 870
Stiffness to Weight: Axial, points 8.7
7.1
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 15 to 20
13 to 22
Strength to Weight: Bending, points 16 to 18
14 to 20
Thermal Diffusivity, mm2/s 8.2
37
Thermal Shock Resistance, points 16 to 21
12 to 22

Alloy Composition


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Copper (Cu), % 61.7 to 67.8
62 to 65
Iron (Fe), % 1.7 to 2.3
0 to 0.1
Lead (Pb), % 0 to 0.050
1.5 to 2.5
Manganese (Mn), % 1.5 to 2.5
0
Nickel (Ni), % 29 to 32
0
Zinc (Zn), % 0 to 1.0
32 to 36.5
Residuals, % 0 to 0.5
0 to 0.4