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C90500 Gun Metal vs. C23400 Brass

Both C90500 gun metal and C23400 brass are copper alloys. They have 85% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C23400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Poisson's Ratio 0.34
0.32
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 320
370 to 640

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 1000
970
Melting Onset (Solidus), °C 850
930
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 75
120
Thermal Expansion, µm/m-K 18
19

Otherwise Unclassified Properties

Base Metal Price, % relative 35
27
Density, g/cm3 8.7
8.5
Embodied Carbon, kg CO2/kg material 3.6
2.6
Embodied Energy, MJ/kg 59
43
Embodied Water, L/kg 390
320

Common Calculations

Stiffness to Weight: Axial, points 6.9
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
12 to 21
Strength to Weight: Bending, points 12
13 to 19
Thermal Diffusivity, mm2/s 23
36
Thermal Shock Resistance, points 12
12 to 22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 86 to 89
81 to 84
Iron (Fe), % 0 to 0.2
0 to 0.050
Lead (Pb), % 0 to 0.3
0 to 0.050
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0
Zinc (Zn), % 1.0 to 3.0
15.7 to 19
Residuals, % 0
0 to 0.2