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C68400 Brass vs. C72200 Copper-nickel

Both C68400 brass and C72200 copper-nickel are copper alloys. They have 63% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is C68400 brass and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
130
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 41
48
Tensile Strength: Ultimate (UTS), MPa 540
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 210
220
Maximum Temperature: Mechanical, °C 130
230
Melting Completion (Liquidus), °C 840
1180
Melting Onset (Solidus), °C 820
1120
Specific Heat Capacity, J/kg-K 400
400
Thermal Conductivity, W/m-K 66
34
Thermal Expansion, µm/m-K 20
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 87
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 99
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
36
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.9
Embodied Energy, MJ/kg 47
59
Embodied Water, L/kg 320
300

Common Calculations

Stiffness to Weight: Axial, points 7.5
8.0
Stiffness to Weight: Bending, points 20
19
Strength to Weight: Axial, points 19
11 to 18
Strength to Weight: Bending, points 19
12 to 17
Thermal Diffusivity, mm2/s 21
9.6
Thermal Shock Resistance, points 18
12 to 20

Alloy Composition


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Aluminum (Al), % 0 to 0.5
0
Boron (B), % 0.0010 to 0.030
0
Chromium (Cr), % 0
0.3 to 0.7
Copper (Cu), % 59 to 64
78.1 to 84.2
Iron (Fe), % 0 to 1.0
0.5 to 1.0
Lead (Pb), % 0 to 0.090
0 to 0.050
Manganese (Mn), % 0.2 to 1.5
0 to 1.0
Nickel (Ni), % 0 to 0.5
15 to 18
Phosphorus (P), % 0.030 to 0.3
0
Silicon (Si), % 1.5 to 2.5
0
Tin (Sn), % 0 to 0.5
0
Zinc (Zn), % 28.6 to 39.3
0 to 1.0
Residuals, % 0 to 0.5
0 to 0.2