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C90500 Gun Metal vs. C43400 Brass

Both C90500 gun metal and C43400 brass are copper alloys. They have 88% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C43400 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 20
3.0 to 49
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 320
310 to 690
Tensile Strength: Yield (Proof), MPa 160
110 to 560

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 1000
1020
Melting Onset (Solidus), °C 850
990
Specific Heat Capacity, J/kg-K 370
380
Thermal Conductivity, W/m-K 75
140
Thermal Expansion, µm/m-K 18
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
31
Electrical Conductivity: Equal Weight (Specific), % IACS 11
32

Otherwise Unclassified Properties

Base Metal Price, % relative 35
28
Density, g/cm3 8.7
8.6
Embodied Carbon, kg CO2/kg material 3.6
2.7
Embodied Energy, MJ/kg 59
44
Embodied Water, L/kg 390
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
19 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 110
57 to 1420
Stiffness to Weight: Axial, points 6.9
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
10 to 22
Strength to Weight: Bending, points 12
12 to 20
Thermal Diffusivity, mm2/s 23
41
Thermal Shock Resistance, points 12
11 to 24

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.2
0
Copper (Cu), % 86 to 89
84 to 87
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
0.4 to 1.0
Zinc (Zn), % 1.0 to 3.0
11.4 to 15.6
Residuals, % 0
0 to 0.5