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C37700 Brass vs. C72200 Copper-nickel

Both C37700 brass and C72200 copper-nickel are copper alloys. They have 60% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C37700 brass and the bottom bar is C72200 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
130
Poisson's Ratio 0.31
0.33
Rockwell B Hardness 45
71 to 86
Shear Modulus, GPa 39
48
Tensile Strength: Ultimate (UTS), MPa 400
350 to 580

Thermal Properties

Latent Heat of Fusion, J/g 170
220
Maximum Temperature: Mechanical, °C 120
230
Melting Completion (Liquidus), °C 890
1180
Melting Onset (Solidus), °C 880
1120
Specific Heat Capacity, J/kg-K 380
400
Thermal Conductivity, W/m-K 120
34
Thermal Expansion, µm/m-K 21
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
6.5
Electrical Conductivity: Equal Weight (Specific), % IACS 30
6.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
36
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 2.6
3.9
Embodied Energy, MJ/kg 45
59
Embodied Water, L/kg 320
300

Common Calculations

Stiffness to Weight: Axial, points 7.1
8.0
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 14
11 to 18
Strength to Weight: Bending, points 15
12 to 17
Thermal Diffusivity, mm2/s 39
9.6
Thermal Shock Resistance, points 13
12 to 20

Alloy Composition

Chromium (Cr), % 0
0.3 to 0.7
Copper (Cu), % 58 to 61
78.1 to 84.2
Iron (Fe), % 0 to 0.3
0.5 to 1.0
Lead (Pb), % 1.5 to 2.5
0 to 0.050
Manganese (Mn), % 0
0 to 1.0
Nickel (Ni), % 0
15 to 18
Zinc (Zn), % 35.7 to 40.5
0 to 1.0
Residuals, % 0
0 to 0.2