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CC751S Brass vs. CC482K Bronze

Both CC751S brass and CC482K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 68% of their average alloy composition in common.

For each property being compared, the top bar is CC751S brass and the bottom bar is CC482K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
99
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 5.6
5.6
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
40
Tensile Strength: Ultimate (UTS), MPa 450
300
Tensile Strength: Yield (Proof), MPa 320
160

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 850
980
Melting Onset (Solidus), °C 810
860
Specific Heat Capacity, J/kg-K 390
360
Thermal Conductivity, W/m-K 110
64
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
10
Electrical Conductivity: Equal Weight (Specific), % IACS 28
10

Otherwise Unclassified Properties

Base Metal Price, % relative 24
36
Density, g/cm3 8.1
8.8
Embodied Carbon, kg CO2/kg material 2.8
3.8
Embodied Energy, MJ/kg 46
62
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
14
Resilience: Unit (Modulus of Resilience), kJ/m3 480
120
Stiffness to Weight: Axial, points 7.2
6.8
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 15
9.5
Strength to Weight: Bending, points 16
11
Thermal Diffusivity, mm2/s 35
20
Thermal Shock Resistance, points 15
11

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0 to 0.5
0 to 0.2
Copper (Cu), % 62.7 to 66
83.5 to 87
Iron (Fe), % 0.25 to 0.5
0 to 0.2
Lead (Pb), % 0.8 to 2.2
0.7 to 2.5
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.8
0 to 2.0
Phosphorus (P), % 0
0 to 0.4
Silicon (Si), % 0.65 to 1.1
0 to 0.010
Sulfur (S), % 0
0 to 0.080
Tin (Sn), % 0 to 0.8
10.5 to 12.5
Zinc (Zn), % 27.9 to 35.6
0 to 2.0