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C38000 Brass vs. C72900 Copper-nickel

Both C38000 brass and C72900 copper-nickel are copper alloys. They have 58% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is C38000 brass and the bottom bar is C72900 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 17
6.0 to 20
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 39
45
Shear Strength, MPa 230
540 to 630
Tensile Strength: Ultimate (UTS), MPa 380
870 to 1080
Tensile Strength: Yield (Proof), MPa 120
700 to 920

Thermal Properties

Latent Heat of Fusion, J/g 170
210
Maximum Temperature: Mechanical, °C 110
210
Melting Completion (Liquidus), °C 800
1120
Melting Onset (Solidus), °C 760
950
Specific Heat Capacity, J/kg-K 380
380
Thermal Conductivity, W/m-K 110
29
Thermal Expansion, µm/m-K 21
17

Otherwise Unclassified Properties

Base Metal Price, % relative 22
39
Density, g/cm3 8.0
8.8
Embodied Carbon, kg CO2/kg material 2.7
4.6
Embodied Energy, MJ/kg 46
72
Embodied Water, L/kg 330
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 50
49 to 210
Resilience: Unit (Modulus of Resilience), kJ/m3 74
2030 to 3490
Stiffness to Weight: Axial, points 7.1
7.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
27 to 34
Strength to Weight: Bending, points 14
23 to 27
Thermal Diffusivity, mm2/s 37
8.6
Thermal Shock Resistance, points 13
31 to 38

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Copper (Cu), % 55 to 60
74.1 to 78
Iron (Fe), % 0 to 0.35
0 to 0.5
Lead (Pb), % 1.5 to 2.5
0 to 0.020
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0
14.5 to 15.5
Niobium (Nb), % 0
0 to 0.1
Tin (Sn), % 0 to 0.3
7.5 to 8.5
Zinc (Zn), % 35.9 to 43.5
0 to 0.5
Residuals, % 0
0 to 0.3