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C69430 Brass vs. C23400 Brass

Both C69430 brass and C23400 brass are copper alloys. They have a very high 96% of their average alloy composition in common. There are 22 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 C69430 brass and the bottom bar is C23400 brass.

UNS C69430 Silicon Red BrassUNS C23400 Red Brass
Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 42
42
Tensile Strength: Ultimate (UTS), MPa 570
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 260
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 920
970
Melting Onset (Solidus), °C 820
930
Specific Heat Capacity, J/kg-K 410
390
Thermal Conductivity, W/m-K 26
120
Thermal Expansion, µm/m-K 18
19

Otherwise Unclassified Properties

Base Metal Price, % relative 27
27
Density, g/cm3 8.3
8.5
Embodied Carbon, kg CO2/kg material 2.7
2.6
Embodied Energy, MJ/kg 44
43
Embodied Water, L/kg 300
320

Common Calculations

Stiffness to Weight: Axial, points 7.4
7.2
Stiffness to Weight: Bending, points 19
19
Strength to Weight: Axial, points 19
12 to 21
Strength to Weight: Bending, points 18
13 to 19
Thermal Diffusivity, mm2/s 7.7
36
Thermal Shock Resistance, points 20
12 to 22

Alloy Composition


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Arsenic (As), % 0.030 to 0.060
0
Copper (Cu), % 80 to 83
81 to 84
Iron (Fe), % 0 to 0.2
0 to 0.050
Lead (Pb), % 0 to 0.3
0 to 0.050
Silicon (Si), % 3.5 to 4.5
0
Zinc (Zn), % 11.4 to 16.5
15.7 to 19
Residuals, % 0 to 0.5
0 to 0.2