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C92700 Bronze vs. C87700 Bronze

Both C92700 bronze and C87700 bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 90% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is C92700 bronze and the bottom bar is C87700 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 9.1
3.6
Poisson's Ratio 0.34
0.33
Shear Modulus, GPa 40
42
Tensile Strength: Ultimate (UTS), MPa 290
300
Tensile Strength: Yield (Proof), MPa 150
120

Thermal Properties

Latent Heat of Fusion, J/g 190
250
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 980
980
Melting Onset (Solidus), °C 840
900
Specific Heat Capacity, J/kg-K 370
400
Thermal Conductivity, W/m-K 47
120
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
45
Electrical Conductivity: Equal Weight (Specific), % IACS 11
48

Otherwise Unclassified Properties

Base Metal Price, % relative 35
29
Density, g/cm3 8.7
8.5
Embodied Carbon, kg CO2/kg material 3.6
2.7
Embodied Energy, MJ/kg 58
45
Embodied Water, L/kg 390
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 110
64
Stiffness to Weight: Axial, points 6.8
7.4
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.1
9.8
Strength to Weight: Bending, points 11
12
Thermal Diffusivity, mm2/s 15
34
Thermal Shock Resistance, points 11
11

Alloy Composition

Aluminum (Al), % 0 to 0.0050
0
Antimony (Sb), % 0 to 0.25
0 to 0.1
Copper (Cu), % 86 to 89
87.5 to 90.5
Iron (Fe), % 0 to 0.2
0 to 0.5
Lead (Pb), % 1.0 to 2.5
0 to 0.090
Manganese (Mn), % 0
0 to 0.8
Nickel (Ni), % 0 to 1.0
0 to 0.25
Phosphorus (P), % 0 to 1.5
0 to 0.15
Silicon (Si), % 0 to 0.0050
2.5 to 3.5
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0 to 2.0
Zinc (Zn), % 0 to 0.7
7.0 to 9.0
Residuals, % 0
0 to 0.8