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C90700 Bronze vs. CC751S Brass

Both C90700 bronze and CC751S brass 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.

For each property being compared, the top bar is C90700 bronze and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 12
5.6
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 330
450
Tensile Strength: Yield (Proof), MPa 180
320

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1000
850
Melting Onset (Solidus), °C 830
810
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 71
110
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
25
Electrical Conductivity: Equal Weight (Specific), % IACS 10
28

Otherwise Unclassified Properties

Base Metal Price, % relative 35
24
Density, g/cm3 8.7
8.1
Embodied Carbon, kg CO2/kg material 3.7
2.8
Embodied Energy, MJ/kg 60
46
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
23
Resilience: Unit (Modulus of Resilience), kJ/m3 150
480
Stiffness to Weight: Axial, points 6.9
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 10
15
Strength to Weight: Bending, points 12
16
Thermal Diffusivity, mm2/s 22
35
Thermal Shock Resistance, points 12
15

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.1
Antimony (Sb), % 0 to 0.2
0 to 0.5
Copper (Cu), % 88 to 90
62.7 to 66
Iron (Fe), % 0 to 0.15
0.25 to 0.5
Lead (Pb), % 0 to 0.5
0.8 to 2.2
Manganese (Mn), % 0
0 to 0.15
Nickel (Ni), % 0 to 0.5
0 to 0.8
Phosphorus (P), % 0 to 1.5
0
Silicon (Si), % 0 to 0.0050
0.65 to 1.1
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 10 to 12
0 to 0.8
Zinc (Zn), % 0 to 0.5
27.9 to 35.6
Residuals, % 0 to 0.6
0