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CC480K Bronze vs. CC751S Brass

Both CC480K bronze and CC751S brass 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 CC480K bronze and the bottom bar is CC751S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 88
130
Elastic (Young's, Tensile) Modulus, GPa 110
110
Elongation at Break, % 13
5.6
Poisson's Ratio 0.34
0.31
Shear Modulus, GPa 41
40
Tensile Strength: Ultimate (UTS), MPa 300
450
Tensile Strength: Yield (Proof), MPa 180
320

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 1010
850
Melting Onset (Solidus), °C 900
810
Specific Heat Capacity, J/kg-K 370
390
Thermal Conductivity, W/m-K 63
110
Thermal Expansion, µm/m-K 18
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
25
Electrical Conductivity: Equal Weight (Specific), % IACS 11
28

Otherwise Unclassified Properties

Base Metal Price, % relative 35
24
Density, g/cm3 8.8
8.1
Embodied Carbon, kg CO2/kg material 3.7
2.8
Embodied Energy, MJ/kg 59
46
Embodied Water, L/kg 390
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 35
23
Resilience: Unit (Modulus of Resilience), kJ/m3 140
480
Stiffness to Weight: Axial, points 6.9
7.2
Stiffness to Weight: Bending, points 18
19
Strength to Weight: Axial, points 9.6
15
Strength to Weight: Bending, points 11
16
Thermal Diffusivity, mm2/s 20
35
Thermal Shock Resistance, points 11
15

Alloy Composition

Aluminum (Al), % 0 to 0.010
0 to 0.1
Antimony (Sb), % 0 to 0.2
0 to 0.5
Copper (Cu), % 86 to 90
62.7 to 66
Iron (Fe), % 0 to 0.2
0.25 to 0.5
Lead (Pb), % 0 to 1.0
0.8 to 2.2
Manganese (Mn), % 0 to 0.1
0 to 0.15
Nickel (Ni), % 0 to 2.0
0 to 0.8
Phosphorus (P), % 0 to 0.2
0
Silicon (Si), % 0 to 0.020
0.65 to 1.1
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 9.0 to 11
0 to 0.8
Zinc (Zn), % 0 to 0.5
27.9 to 35.6