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C90500 Gun Metal vs. C95520 Bronze

Both C90500 gun metal and C95520 bronze are copper alloys. They have 79% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C95520 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 20
2.6
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 40
44
Tensile Strength: Ultimate (UTS), MPa 320
970
Tensile Strength: Yield (Proof), MPa 160
530

Thermal Properties

Latent Heat of Fusion, J/g 190
240
Maximum Temperature: Mechanical, °C 170
240
Melting Completion (Liquidus), °C 1000
1070
Melting Onset (Solidus), °C 850
1020
Specific Heat Capacity, J/kg-K 370
450
Thermal Conductivity, W/m-K 75
40
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
11
Electrical Conductivity: Equal Weight (Specific), % IACS 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 35
29
Density, g/cm3 8.7
8.2
Embodied Carbon, kg CO2/kg material 3.6
3.6
Embodied Energy, MJ/kg 59
58
Embodied Water, L/kg 390
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
21
Resilience: Unit (Modulus of Resilience), kJ/m3 110
1210
Stiffness to Weight: Axial, points 6.9
8.0
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 10
33
Strength to Weight: Bending, points 12
27
Thermal Diffusivity, mm2/s 23
11
Thermal Shock Resistance, points 12
33

Alloy Composition

Aluminum (Al), % 0 to 0.0050
10.5 to 11.5
Antimony (Sb), % 0 to 0.2
0
Chromium (Cr), % 0
0 to 0.050
Cobalt (Co), % 0
0 to 0.2
Copper (Cu), % 86 to 89
74.5 to 81.3
Iron (Fe), % 0 to 0.2
4.0 to 5.5
Lead (Pb), % 0 to 0.3
0 to 0.030
Manganese (Mn), % 0
0 to 1.5
Nickel (Ni), % 0 to 1.0
4.2 to 6.0
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0 to 0.15
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0 to 0.25
Zinc (Zn), % 1.0 to 3.0
0 to 0.3
Residuals, % 0
0 to 0.5