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CC761S Brass vs. CC480K Bronze

Both CC761S brass and CC480K bronze are copper alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 82% of their average alloy composition in common.

For each property being compared, the top bar is CC761S brass and the bottom bar is CC480K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
88
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 8.7
13
Poisson's Ratio 0.33
0.34
Shear Modulus, GPa 42
41
Tensile Strength: Ultimate (UTS), MPa 540
300
Tensile Strength: Yield (Proof), MPa 340
180

Thermal Properties

Latent Heat of Fusion, J/g 260
190
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 960
1010
Melting Onset (Solidus), °C 910
900
Specific Heat Capacity, J/kg-K 410
370
Thermal Conductivity, W/m-K 27
63
Thermal Expansion, µm/m-K 18
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
11
Electrical Conductivity: Equal Weight (Specific), % IACS 43
11

Otherwise Unclassified Properties

Base Metal Price, % relative 27
35
Density, g/cm3 8.3
8.8
Embodied Carbon, kg CO2/kg material 2.7
3.7
Embodied Energy, MJ/kg 45
59
Embodied Water, L/kg 300
390

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 41
35
Resilience: Unit (Modulus of Resilience), kJ/m3 530
140
Stiffness to Weight: Axial, points 7.4
6.9
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 18
9.6
Strength to Weight: Bending, points 18
11
Thermal Diffusivity, mm2/s 8.0
20
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0 to 0.050
0 to 0.2
Copper (Cu), % 78 to 83
86 to 90
Iron (Fe), % 0 to 0.6
0 to 0.2
Lead (Pb), % 0 to 0.8
0 to 1.0
Manganese (Mn), % 0 to 0.2
0 to 0.1
Nickel (Ni), % 0 to 1.0
0 to 2.0
Phosphorus (P), % 0 to 0.030
0 to 0.2
Silicon (Si), % 3.0 to 5.0
0 to 0.020
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.3
9.0 to 11
Zinc (Zn), % 8.9 to 19
0 to 0.5