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CC331G Bronze vs. CC765S Brass

Both CC331G bronze and CC765S brass are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 62% of their average alloy composition in common.

For each property being compared, the top bar is CC331G bronze and the bottom bar is CC765S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 20
21
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 43
42
Tensile Strength: Ultimate (UTS), MPa 620
540
Tensile Strength: Yield (Proof), MPa 240
220

Thermal Properties

Latent Heat of Fusion, J/g 230
180
Maximum Temperature: Mechanical, °C 220
140
Melting Completion (Liquidus), °C 1060
860
Melting Onset (Solidus), °C 1000
820
Specific Heat Capacity, J/kg-K 440
400
Thermal Conductivity, W/m-K 61
91
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 13
30
Electrical Conductivity: Equal Weight (Specific), % IACS 14
34

Otherwise Unclassified Properties

Base Metal Price, % relative 28
24
Density, g/cm3 8.3
8.0
Embodied Carbon, kg CO2/kg material 3.2
3.0
Embodied Energy, MJ/kg 53
51
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 97
90
Resilience: Unit (Modulus of Resilience), kJ/m3 250
220
Stiffness to Weight: Axial, points 7.6
7.6
Stiffness to Weight: Bending, points 19
20
Strength to Weight: Axial, points 21
19
Strength to Weight: Bending, points 19
18
Thermal Diffusivity, mm2/s 17
28
Thermal Shock Resistance, points 22
17

Alloy Composition

Aluminum (Al), % 8.5 to 10.5
0.5 to 2.5
Antimony (Sb), % 0
0 to 0.080
Copper (Cu), % 83 to 86.5
51 to 65
Iron (Fe), % 1.5 to 3.5
0.5 to 2.0
Lead (Pb), % 0 to 0.1
0 to 0.5
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0 to 1.0
0.3 to 3.0
Nickel (Ni), % 0 to 1.5
0 to 6.0
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.2
0 to 0.1
Tin (Sn), % 0 to 0.2
0 to 1.0
Zinc (Zn), % 0 to 0.5
19.8 to 47.7