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C90500 Gun Metal vs. CC496K Bronze

Both C90500 gun metal and CC496K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 85% 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 CC496K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
97
Elongation at Break, % 20
8.6
Poisson's Ratio 0.34
0.35
Shear Modulus, GPa 40
36
Tensile Strength: Ultimate (UTS), MPa 320
210
Tensile Strength: Yield (Proof), MPa 160
99

Thermal Properties

Latent Heat of Fusion, J/g 190
170
Maximum Temperature: Mechanical, °C 170
140
Melting Completion (Liquidus), °C 1000
900
Melting Onset (Solidus), °C 850
820
Specific Heat Capacity, J/kg-K 370
340
Thermal Conductivity, W/m-K 75
52
Thermal Expansion, µm/m-K 18
19

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 35
31
Density, g/cm3 8.7
9.2
Embodied Carbon, kg CO2/kg material 3.6
3.3
Embodied Energy, MJ/kg 59
52
Embodied Water, L/kg 390
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
15
Resilience: Unit (Modulus of Resilience), kJ/m3 110
50
Stiffness to Weight: Axial, points 6.9
5.9
Stiffness to Weight: Bending, points 18
17
Strength to Weight: Axial, points 10
6.5
Strength to Weight: Bending, points 12
8.6
Thermal Diffusivity, mm2/s 23
17
Thermal Shock Resistance, points 12
8.1

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.010
Antimony (Sb), % 0 to 0.2
0 to 0.5
Copper (Cu), % 86 to 89
72 to 79.5
Iron (Fe), % 0 to 0.2
0 to 0.25
Lead (Pb), % 0 to 0.3
13 to 17
Manganese (Mn), % 0
0 to 0.2
Nickel (Ni), % 0 to 1.0
0.5 to 2.0
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
6.0 to 8.0
Zinc (Zn), % 1.0 to 3.0
0 to 2.0
Residuals, % 0 to 0.3
0