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CC750S Brass vs. CC481K Bronze

Both CC750S brass and CC481K bronze 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 CC750S brass and the bottom bar is CC481K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 54
90
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 13
4.5
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 200
350
Tensile Strength: Yield (Proof), MPa 80
180

Thermal Properties

Latent Heat of Fusion, J/g 170
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 860
1000
Melting Onset (Solidus), °C 810
880
Specific Heat Capacity, J/kg-K 380
370
Thermal Conductivity, W/m-K 110
64
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 24
10
Electrical Conductivity: Equal Weight (Specific), % IACS 26
10

Otherwise Unclassified Properties

Base Metal Price, % relative 25
35
Density, g/cm3 8.2
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.7
Embodied Energy, MJ/kg 46
60
Embodied Water, L/kg 330
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
13
Resilience: Unit (Modulus of Resilience), kJ/m3 30
150
Stiffness to Weight: Axial, points 7.1
6.9
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 6.8
11
Strength to Weight: Bending, points 9.3
13
Thermal Diffusivity, mm2/s 35
20
Thermal Shock Resistance, points 6.7
13

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0
0 to 0.050
Copper (Cu), % 62 to 67
87 to 89.5
Iron (Fe), % 0 to 0.8
0 to 0.1
Lead (Pb), % 1.0 to 3.0
0 to 0.25
Manganese (Mn), % 0 to 0.2
0 to 0.050
Nickel (Ni), % 0 to 1.0
0 to 0.1
Phosphorus (P), % 0 to 0.050
0 to 1.0
Silicon (Si), % 0 to 0.050
0 to 0.010
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 1.5
10 to 11.5
Zinc (Zn), % 26.3 to 36
0 to 0.5