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CC765S Brass vs. CC484K Bronze

Both CC765S brass and CC484K bronze 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 CC765S brass and the bottom bar is CC484K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
100
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 21
11
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 540
330
Tensile Strength: Yield (Proof), MPa 220
200

Thermal Properties

Latent Heat of Fusion, J/g 180
190
Maximum Temperature: Mechanical, °C 140
170
Melting Completion (Liquidus), °C 860
1000
Melting Onset (Solidus), °C 820
870
Specific Heat Capacity, J/kg-K 400
370
Thermal Conductivity, W/m-K 91
70
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
9.1
Electrical Conductivity: Equal Weight (Specific), % IACS 34
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
37
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 3.0
3.9
Embodied Energy, MJ/kg 51
64
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
32
Resilience: Unit (Modulus of Resilience), kJ/m3 220
180
Stiffness to Weight: Axial, points 7.6
6.9
Stiffness to Weight: Bending, points 20
18
Strength to Weight: Axial, points 19
10
Strength to Weight: Bending, points 18
12
Thermal Diffusivity, mm2/s 28
22
Thermal Shock Resistance, points 17
12

Alloy Composition

Aluminum (Al), % 0.5 to 2.5
0 to 0.010
Antimony (Sb), % 0 to 0.080
0 to 0.1
Copper (Cu), % 51 to 65
84.5 to 87.5
Iron (Fe), % 0.5 to 2.0
0 to 0.2
Lead (Pb), % 0 to 0.5
0 to 0.3
Manganese (Mn), % 0.3 to 3.0
0 to 0.2
Nickel (Ni), % 0 to 6.0
1.5 to 2.5
Phosphorus (P), % 0 to 0.030
0.050 to 0.4
Silicon (Si), % 0 to 0.1
0 to 0.010
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 1.0
11 to 13
Zinc (Zn), % 19.8 to 47.7
0 to 0.4