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C92900 Bronze vs. C90900 Bronze

Both C92900 bronze and C90900 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is C92900 bronze and the bottom bar is C90900 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 84
90
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 9.1
15
Poisson's Ratio 0.34
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 350
280
Tensile Strength: Yield (Proof), MPa 190
140

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 1030
980
Melting Onset (Solidus), °C 860
820
Specific Heat Capacity, J/kg-K 370
360
Thermal Conductivity, W/m-K 58
65
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.0
11
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
11

Otherwise Unclassified Properties

Base Metal Price, % relative 35
36
Density, g/cm3 8.8
8.7
Embodied Carbon, kg CO2/kg material 3.8
3.9
Embodied Energy, MJ/kg 61
64
Embodied Water, L/kg 390
410

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
35
Resilience: Unit (Modulus of Resilience), kJ/m3 170
89
Stiffness to Weight: Axial, points 6.8
6.8
Stiffness to Weight: Bending, points 18
18
Strength to Weight: Axial, points 11
8.8
Strength to Weight: Bending, points 13
11
Thermal Diffusivity, mm2/s 18
21
Thermal Shock Resistance, points 13
10

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0050
Antimony (Sb), % 0 to 0.25
0 to 0.2
Copper (Cu), % 82 to 86
86 to 89
Iron (Fe), % 0 to 0.2
0 to 0.15
Lead (Pb), % 2.0 to 3.2
0 to 0.25
Nickel (Ni), % 2.8 to 4.0
0 to 0.5
Phosphorus (P), % 0 to 1.5
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), % 9.0 to 11
12 to 14
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0 to 0.7
0 to 0.6