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C86300 Bronze vs. C90500 Gun Metal

Both C86300 bronze and C90500 gun metal are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 66% of their average alloy composition in common. There are 29 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 C86300 bronze and the bottom bar is C90500 gun metal.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 430
280
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 14
20
Poisson's Ratio 0.32
0.34
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 850
320
Tensile Strength: Yield (Proof), MPa 480
160

Thermal Properties

Latent Heat of Fusion, J/g 200
190
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 920
1000
Melting Onset (Solidus), °C 890
850
Specific Heat Capacity, J/kg-K 420
370
Thermal Conductivity, W/m-K 35
75
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
11

Otherwise Unclassified Properties

Base Metal Price, % relative 23
35
Density, g/cm3 7.8
8.7
Embodied Carbon, kg CO2/kg material 3.0
3.6
Embodied Energy, MJ/kg 51
59
Embodied Water, L/kg 360
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
54
Resilience: Unit (Modulus of Resilience), kJ/m3 1030
110
Stiffness to Weight: Axial, points 7.8
6.9
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 30
10
Strength to Weight: Bending, points 25
12
Thermal Diffusivity, mm2/s 11
23
Thermal Shock Resistance, points 28
12

Alloy Composition

Aluminum (Al), % 5.0 to 7.5
0 to 0.0050
Antimony (Sb), % 0
0 to 0.2
Copper (Cu), % 60 to 66
86 to 89
Iron (Fe), % 2.0 to 4.0
0 to 0.2
Lead (Pb), % 0 to 0.2
0 to 0.3
Manganese (Mn), % 2.5 to 5.0
0
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0
0 to 1.5
Silicon (Si), % 0
0 to 0.0050
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.2
9.0 to 11
Zinc (Zn), % 22 to 28
1.0 to 3.0
Residuals, % 0
0 to 0.3