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C81400 Copper vs. C69430 Brass

Both C81400 copper and C69430 brass are copper alloys. They have 82% of their average alloy composition in common. There are 28 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 C81400 copper and the bottom bar is C69430 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Elongation at Break, % 11
17
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 41
42
Tensile Strength: Ultimate (UTS), MPa 370
570
Tensile Strength: Yield (Proof), MPa 250
280

Thermal Properties

Latent Heat of Fusion, J/g 210
260
Maximum Temperature: Mechanical, °C 200
170
Melting Completion (Liquidus), °C 1090
920
Melting Onset (Solidus), °C 1070
820
Specific Heat Capacity, J/kg-K 390
410
Thermal Conductivity, W/m-K 260
26
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
6.2
Electrical Conductivity: Equal Weight (Specific), % IACS 61
6.7

Otherwise Unclassified Properties

Base Metal Price, % relative 33
27
Density, g/cm3 8.9
8.3
Embodied Carbon, kg CO2/kg material 2.8
2.7
Embodied Energy, MJ/kg 45
44
Embodied Water, L/kg 310
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 36
80
Resilience: Unit (Modulus of Resilience), kJ/m3 260
340
Stiffness to Weight: Axial, points 7.3
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 11
19
Strength to Weight: Bending, points 13
18
Thermal Diffusivity, mm2/s 75
7.7
Thermal Shock Resistance, points 13
20

Alloy Composition

Arsenic (As), % 0
0.030 to 0.060
Beryllium (Be), % 0.020 to 0.1
0
Chromium (Cr), % 0.6 to 1.0
0
Copper (Cu), % 98.4 to 99.38
80 to 83
Iron (Fe), % 0
0 to 0.2
Lead (Pb), % 0
0 to 0.3
Silicon (Si), % 0
3.5 to 4.5
Zinc (Zn), % 0
11.4 to 16.5
Residuals, % 0
0 to 0.5