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C87700 Bronze vs. C68300 Brass

Both C87700 bronze and C68300 brass are copper alloys. They have 70% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is C87700 bronze and the bottom bar is C68300 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
100
Elongation at Break, % 3.6
15
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 42
40
Tensile Strength: Ultimate (UTS), MPa 300
430
Tensile Strength: Yield (Proof), MPa 120
260

Thermal Properties

Latent Heat of Fusion, J/g 250
180
Maximum Temperature: Mechanical, °C 180
120
Melting Completion (Liquidus), °C 980
900
Melting Onset (Solidus), °C 900
890
Specific Heat Capacity, J/kg-K 400
390
Thermal Conductivity, W/m-K 120
120
Thermal Expansion, µm/m-K 18
20

Otherwise Unclassified Properties

Base Metal Price, % relative 29
23
Density, g/cm3 8.5
8.0
Embodied Carbon, kg CO2/kg material 2.7
2.8
Embodied Energy, MJ/kg 45
46
Embodied Water, L/kg 310
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.6
56
Resilience: Unit (Modulus of Resilience), kJ/m3 64
330
Stiffness to Weight: Axial, points 7.4
7.3
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 9.8
15
Strength to Weight: Bending, points 12
16
Thermal Diffusivity, mm2/s 34
38
Thermal Shock Resistance, points 11
14

Alloy Composition


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Antimony (Sb), % 0 to 0.1
0.3 to 1.0
Cadmium (Cd), % 0
0 to 0.010
Copper (Cu), % 87.5 to 90.5
59 to 63
Iron (Fe), % 0 to 0.5
0
Lead (Pb), % 0 to 0.090
0 to 0.090
Manganese (Mn), % 0 to 0.8
0
Nickel (Ni), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.15
0
Silicon (Si), % 2.5 to 3.5
0.3 to 1.0
Tin (Sn), % 0 to 2.0
0.050 to 0.2
Zinc (Zn), % 7.0 to 9.0
34.2 to 40.4
Residuals, % 0 to 0.8
0 to 0.5