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C90200 Bronze vs. C90900 Bronze

Both C90200 bronze and C90900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is C90200 bronze and the bottom bar is C90900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
90
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 30
15
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 41
40
Tensile Strength: Ultimate (UTS), MPa 260
280
Tensile Strength: Yield (Proof), MPa 110
140

Thermal Properties

Latent Heat of Fusion, J/g 200
190
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 1050
980
Melting Onset (Solidus), °C 880
820
Specific Heat Capacity, J/kg-K 370
360
Thermal Conductivity, W/m-K 62
65
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
11
Electrical Conductivity: Equal Weight (Specific), % IACS 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 34
36
Density, g/cm3 8.8
8.7
Embodied Carbon, kg CO2/kg material 3.3
3.9
Embodied Energy, MJ/kg 53
64
Embodied Water, L/kg 370
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63
35
Resilience: Unit (Modulus of Resilience), kJ/m3 55
89
Stiffness to Weight: Axial, points 7.0
6.8
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 8.3
8.8
Strength to Weight: Bending, points 10
11
Thermal Diffusivity, mm2/s 19
21
Thermal Shock Resistance, points 9.5
10

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.2
0 to 0.2
Copper (Cu), % 91 to 94
86 to 89
Iron (Fe), % 0 to 0.2
0 to 0.15
Lead (Pb), % 0 to 0.3
0 to 0.25
Nickel (Ni), % 0 to 0.5
0 to 0.5
Phosphorus (P), % 0 to 0.050
0 to 0.050
Silicon (Si), % 0 to 0.0050
0 to 0.0050
Sulfur (S), % 0 to 0.050
0 to 0.050
Tin (Sn), % 6.0 to 8.0
12 to 14
Zinc (Zn), % 0 to 0.5
0 to 0.25
Residuals, % 0 to 0.6
0 to 0.6