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CC751S Brass vs. 4115 Aluminum

CC751S brass belongs to the copper alloys classification, while 4115 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is CC751S brass and the bottom bar is 4115 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
38 to 68
Elastic (Young's, Tensile) Modulus, GPa 110
70
Elongation at Break, % 5.6
1.1 to 11
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 40
26
Tensile Strength: Ultimate (UTS), MPa 450
120 to 220
Tensile Strength: Yield (Proof), MPa 320
39 to 190

Thermal Properties

Latent Heat of Fusion, J/g 190
420
Maximum Temperature: Mechanical, °C 130
160
Melting Completion (Liquidus), °C 850
640
Melting Onset (Solidus), °C 810
590
Specific Heat Capacity, J/kg-K 390
900
Thermal Conductivity, W/m-K 110
160
Thermal Expansion, µm/m-K 20
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
41
Electrical Conductivity: Equal Weight (Specific), % IACS 28
140

Otherwise Unclassified Properties

Base Metal Price, % relative 24
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 2.8
8.1
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 330
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
2.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 480
11 to 270
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
50
Strength to Weight: Axial, points 15
12 to 23
Strength to Weight: Bending, points 16
20 to 30
Thermal Diffusivity, mm2/s 35
66
Thermal Shock Resistance, points 15
5.2 to 9.9

Alloy Composition

Aluminum (Al), % 0 to 0.1
94.6 to 97.4
Antimony (Sb), % 0 to 0.5
0
Copper (Cu), % 62.7 to 66
0.1 to 0.5
Iron (Fe), % 0.25 to 0.5
0 to 0.7
Lead (Pb), % 0.8 to 2.2
0
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0 to 0.15
0.6 to 1.2
Nickel (Ni), % 0 to 0.8
0
Silicon (Si), % 0.65 to 1.1
1.8 to 2.2
Tin (Sn), % 0 to 0.8
0
Zinc (Zn), % 27.9 to 35.6
0 to 0.2
Residuals, % 0
0 to 0.15