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C38000 Brass vs. C70700 Copper-nickel

Both C38000 brass and C70700 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 (3, in this case) are not shown.

For each property being compared, the top bar is C38000 brass and the bottom bar is C70700 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
120
Elongation at Break, % 17
39
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 39
46
Shear Strength, MPa 230
220
Tensile Strength: Ultimate (UTS), MPa 380
320
Tensile Strength: Yield (Proof), MPa 120
110

Thermal Properties

Latent Heat of Fusion, J/g 170
220
Maximum Temperature: Mechanical, °C 110
220
Melting Completion (Liquidus), °C 800
1120
Melting Onset (Solidus), °C 760
1060
Specific Heat Capacity, J/kg-K 380
390
Thermal Conductivity, W/m-K 110
59
Thermal Expansion, µm/m-K 21
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
34
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 2.7
3.4
Embodied Energy, MJ/kg 46
52
Embodied Water, L/kg 330
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 50
100
Resilience: Unit (Modulus of Resilience), kJ/m3 74
51
Stiffness to Weight: Axial, points 7.1
7.6
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 13
10
Strength to Weight: Bending, points 14
12
Thermal Diffusivity, mm2/s 37
17
Thermal Shock Resistance, points 13
12

Alloy Composition

Aluminum (Al), % 0 to 0.5
0
Copper (Cu), % 55 to 60
88.5 to 90.5
Iron (Fe), % 0 to 0.35
0 to 0.050
Lead (Pb), % 1.5 to 2.5
0
Manganese (Mn), % 0
0 to 0.5
Nickel (Ni), % 0
9.5 to 10.5
Tin (Sn), % 0 to 0.3
0
Zinc (Zn), % 35.9 to 43.5
0
Residuals, % 0
0 to 0.5