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C91700 Bronze vs. CC764S Brass

Both C91700 bronze and CC764S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 61% of their average alloy composition in common.

For each property being compared, the top bar is C91700 bronze and the bottom bar is CC764S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 90
160
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 13
15
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 41
41
Tensile Strength: Ultimate (UTS), MPa 330
680
Tensile Strength: Yield (Proof), MPa 170
290

Thermal Properties

Latent Heat of Fusion, J/g 190
180
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1020
850
Melting Onset (Solidus), °C 850
810
Specific Heat Capacity, J/kg-K 370
400
Thermal Conductivity, W/m-K 71
94
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 10
32
Electrical Conductivity: Equal Weight (Specific), % IACS 10
36

Otherwise Unclassified Properties

Base Metal Price, % relative 36
23
Density, g/cm3 8.7
7.9
Embodied Carbon, kg CO2/kg material 3.9
2.9
Embodied Energy, MJ/kg 63
49
Embodied Water, L/kg 400
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
80
Resilience: Unit (Modulus of Resilience), kJ/m3 140
390
Stiffness to Weight: Axial, points 6.9
7.6
Stiffness to Weight: Bending, points 18
20
Strength to Weight: Axial, points 11
24
Strength to Weight: Bending, points 12
22
Thermal Diffusivity, mm2/s 22
30
Thermal Shock Resistance, points 12
22

Alloy Composition

Aluminum (Al), % 0 to 0.0050
1.0 to 3.0
Antimony (Sb), % 0 to 0.2
0 to 0.050
Copper (Cu), % 84.2 to 87.5
52 to 66
Iron (Fe), % 0 to 0.2
0.5 to 2.5
Lead (Pb), % 0 to 0.25
0 to 0.3
Manganese (Mn), % 0
0.3 to 4.0
Nickel (Ni), % 1.2 to 2.0
0 to 3.0
Phosphorus (P), % 0 to 0.3
0 to 0.030
Silicon (Si), % 0 to 0.0050
0 to 0.1
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 11.3 to 12.5
0 to 0.3
Zinc (Zn), % 0 to 0.25
20.7 to 50.2