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CC751S Brass vs. CC484K Bronze

Both CC751S brass and CC484K 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 CC751S 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, % 5.6
11
Poisson's Ratio 0.31
0.34
Shear Modulus, GPa 40
41
Tensile Strength: Ultimate (UTS), MPa 450
330
Tensile Strength: Yield (Proof), MPa 320
200

Thermal Properties

Latent Heat of Fusion, J/g 190
190
Maximum Temperature: Mechanical, °C 130
170
Melting Completion (Liquidus), °C 850
1000
Melting Onset (Solidus), °C 810
870
Specific Heat Capacity, J/kg-K 390
370
Thermal Conductivity, W/m-K 110
70
Thermal Expansion, µm/m-K 20
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
9.1
Electrical Conductivity: Equal Weight (Specific), % IACS 28
9.3

Otherwise Unclassified Properties

Base Metal Price, % relative 24
37
Density, g/cm3 8.1
8.7
Embodied Carbon, kg CO2/kg material 2.8
3.9
Embodied Energy, MJ/kg 46
64
Embodied Water, L/kg 330
400

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
32
Resilience: Unit (Modulus of Resilience), kJ/m3 480
180
Stiffness to Weight: Axial, points 7.2
6.9
Stiffness to Weight: Bending, points 19
18
Strength to Weight: Axial, points 15
10
Strength to Weight: Bending, points 16
12
Thermal Diffusivity, mm2/s 35
22
Thermal Shock Resistance, points 15
12

Alloy Composition

Aluminum (Al), % 0 to 0.1
0 to 0.010
Antimony (Sb), % 0 to 0.5
0 to 0.1
Copper (Cu), % 62.7 to 66
84.5 to 87.5
Iron (Fe), % 0.25 to 0.5
0 to 0.2
Lead (Pb), % 0.8 to 2.2
0 to 0.3
Manganese (Mn), % 0 to 0.15
0 to 0.2
Nickel (Ni), % 0 to 0.8
1.5 to 2.5
Phosphorus (P), % 0
0.050 to 0.4
Silicon (Si), % 0.65 to 1.1
0 to 0.010
Sulfur (S), % 0
0 to 0.050
Tin (Sn), % 0 to 0.8
11 to 13
Zinc (Zn), % 27.9 to 35.6
0 to 0.4