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C90500 Gun Metal vs. CC497K Bronze

Both C90500 gun metal and CC497K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. 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 CC497K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
93
Elongation at Break, % 20
6.7
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 40
34
Tensile Strength: Ultimate (UTS), MPa 320
190
Tensile Strength: Yield (Proof), MPa 160
91

Thermal Properties

Latent Heat of Fusion, J/g 190
160
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1000
870
Melting Onset (Solidus), °C 850
800
Specific Heat Capacity, J/kg-K 370
330
Thermal Conductivity, W/m-K 75
53
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 11
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 35
29
Density, g/cm3 8.7
9.3
Embodied Carbon, kg CO2/kg material 3.6
3.0
Embodied Energy, MJ/kg 59
48
Embodied Water, L/kg 390
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
10
Resilience: Unit (Modulus of Resilience), kJ/m3 110
45
Stiffness to Weight: Axial, points 6.9
5.5
Stiffness to Weight: Bending, points 18
16
Strength to Weight: Axial, points 10
5.6
Strength to Weight: Bending, points 12
7.8
Thermal Diffusivity, mm2/s 23
17
Thermal Shock Resistance, points 12
7.2

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.010
Antimony (Sb), % 0 to 0.2
0 to 0.75
Copper (Cu), % 86 to 89
67.5 to 77.5
Iron (Fe), % 0 to 0.2
0 to 0.25
Lead (Pb), % 0 to 0.3
18 to 23
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 1.0
0.5 to 2.5
Phosphorus (P), % 0 to 1.5
0 to 0.1
Silicon (Si), % 0 to 0.0050
0 to 0.010
Sulfur (S), % 0 to 0.050
0 to 0.1
Tin (Sn), % 9.0 to 11
4.0 to 6.0
Zinc (Zn), % 1.0 to 3.0
0 to 2.0
Residuals, % 0 to 0.3
0