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C17500 Copper vs. C23400 Brass

Both C17500 copper and C23400 brass are copper alloys. They have 83% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is C17500 copper and the bottom bar is C23400 brass.

UNS C17500 (CW104C) Cobalt-Beryllium CopperUNS C23400 Red Brass
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
110
Poisson's Ratio 0.34
0.32
Rockwell B Hardness 38 to 99
52 to 91
Shear Modulus, GPa 45
42
Tensile Strength: Ultimate (UTS), MPa 310 to 860
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 220
190
Maximum Temperature: Mechanical, °C 220
160
Melting Completion (Liquidus), °C 1060
970
Melting Onset (Solidus), °C 1020
930
Specific Heat Capacity, J/kg-K 390
390
Thermal Conductivity, W/m-K 200
120
Thermal Expansion, µm/m-K 18
19

Otherwise Unclassified Properties

Base Metal Price, % relative 60
27
Density, g/cm3 8.9
8.5
Embodied Carbon, kg CO2/kg material 4.7
2.6
Embodied Energy, MJ/kg 73
43
Embodied Water, L/kg 320
320

Common Calculations

Stiffness to Weight: Axial, points 7.5
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.7 to 27
12 to 21
Strength to Weight: Bending, points 11 to 23
13 to 19
Thermal Diffusivity, mm2/s 59
36
Thermal Shock Resistance, points 11 to 29
12 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.2
0
Beryllium (Be), % 0.4 to 0.7
0
Cobalt (Co), % 2.4 to 2.7
0
Copper (Cu), % 95.6 to 97.2
81 to 84
Iron (Fe), % 0 to 0.1
0 to 0.050
Lead (Pb), % 0
0 to 0.050
Silicon (Si), % 0 to 0.2
0
Zinc (Zn), % 0
15.7 to 19
Residuals, % 0
0 to 0.2