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M20 C26800 Brass vs. M20 C72500 Copper-nickel

Both M20 C26800 brass and M20 C72500 copper-nickel are copper alloys. Both are furnished in the M20 (as hot rolled) condition. They have 67% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is M20 C26800 brass and the bottom bar is M20 C72500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
45
Tensile Strength: Ultimate (UTS), MPa 310
420

Thermal Properties

Latent Heat of Fusion, J/g 180
210
Maximum Temperature: Mechanical, °C 130
210
Melting Completion (Liquidus), °C 930
1130
Melting Onset (Solidus), °C 900
1060
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 120
54
Thermal Expansion, µm/m-K 20
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 27
11
Electrical Conductivity: Equal Weight (Specific), % IACS 30
11

Otherwise Unclassified Properties

Base Metal Price, % relative 24
35
Density, g/cm3 8.1
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.6
Embodied Energy, MJ/kg 45
55
Embodied Water, L/kg 320
320

Common Calculations

Stiffness to Weight: Axial, points 7.2
7.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 11
13
Strength to Weight: Bending, points 13
14
Thermal Diffusivity, mm2/s 37
16
Thermal Shock Resistance, points 10
14

Alloy Composition


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Copper (Cu), % 64 to 68.5
85.2 to 89.7
Iron (Fe), % 0 to 0.050
0 to 0.6
Lead (Pb), % 0 to 0.15
0 to 0.050
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0
8.5 to 10.5
Tin (Sn), % 0
1.8 to 2.8
Zinc (Zn), % 31 to 36
0 to 0.5
Residuals, % 0 to 0.3
0 to 0.2