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C90500 Gun Metal vs. C44300 Brass

Both C90500 gun metal and C44300 brass are copper alloys. They have 75% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C44300 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
41
Tensile Strength: Ultimate (UTS), MPa 320
350
Tensile Strength: Yield (Proof), MPa 160
120

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
140
Melting Completion (Liquidus), °C 1000
940
Melting Onset (Solidus), °C 850
900
Specific Heat Capacity, J/kg-K 370
380
Thermal Conductivity, W/m-K 75
110
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
25
Electrical Conductivity: Equal Weight (Specific), % IACS 11
27

Otherwise Unclassified Properties

Base Metal Price, % relative 35
26
Density, g/cm3 8.7
8.3
Embodied Carbon, kg CO2/kg material 3.6
2.8
Embodied Energy, MJ/kg 59
46
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 110
65
Stiffness to Weight: Axial, points 6.9
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
12
Strength to Weight: Bending, points 12
13
Thermal Diffusivity, mm2/s 23
35
Thermal Shock Resistance, points 12
12

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0
0.020 to 0.060
Copper (Cu), % 86 to 89
70 to 73
Iron (Fe), % 0 to 0.2
0 to 0.060
Lead (Pb), % 0 to 0.3
0 to 0.070
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
0.9 to 1.2
Zinc (Zn), % 1.0 to 3.0
25.2 to 29.1
Residuals, % 0
0 to 0.4