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C90500 Gun Metal vs. C96800 Copper

Both C90500 gun metal and C96800 copper are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 89% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C90500 gun metal and the bottom bar is C96800 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
120
Elongation at Break, % 20
3.4
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 40
46
Tensile Strength: Ultimate (UTS), MPa 320
1010
Tensile Strength: Yield (Proof), MPa 160
860

Thermal Properties

Latent Heat of Fusion, J/g 190
220
Maximum Temperature: Mechanical, °C 170
220
Melting Completion (Liquidus), °C 1000
1120
Melting Onset (Solidus), °C 850
1060
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 75
52
Thermal Expansion, µm/m-K 18
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
10
Electrical Conductivity: Equal Weight (Specific), % IACS 11
10

Otherwise Unclassified Properties

Base Metal Price, % relative 35
34
Density, g/cm3 8.7
8.9
Embodied Carbon, kg CO2/kg material 3.6
3.4
Embodied Energy, MJ/kg 59
52
Embodied Water, L/kg 390
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54
33
Resilience: Unit (Modulus of Resilience), kJ/m3 110
3000
Stiffness to Weight: Axial, points 6.9
7.6
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
32
Strength to Weight: Bending, points 12
25
Thermal Diffusivity, mm2/s 23
15
Thermal Shock Resistance, points 12
35

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0 to 0.1
Antimony (Sb), % 0 to 0.2
0 to 0.020
Copper (Cu), % 86 to 89
87.1 to 90.5
Iron (Fe), % 0 to 0.2
0 to 0.5
Lead (Pb), % 0 to 0.3
0 to 0.0050
Manganese (Mn), % 0
0.050 to 0.3
Nickel (Ni), % 0 to 1.0
9.5 to 10.5
Phosphorus (P), % 0 to 1.5
0 to 0.0050
Silicon (Si), % 0 to 0.0050
0
Sulfur (S), % 0 to 0.050
0 to 0.0025
Tin (Sn), % 9.0 to 11
0
Zinc (Zn), % 1.0 to 3.0
0 to 1.0
Residuals, % 0
0 to 0.5