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2025 Aluminum vs. CC763S Brass

2025 aluminum belongs to the aluminum alloys classification, while CC763S brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 2025 aluminum and the bottom bar is CC763S brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110
130
Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 15
7.3
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 27
41
Tensile Strength: Ultimate (UTS), MPa 400
490
Tensile Strength: Yield (Proof), MPa 260
270

Thermal Properties

Latent Heat of Fusion, J/g 400
190
Maximum Temperature: Mechanical, °C 190
140
Melting Completion (Liquidus), °C 640
870
Melting Onset (Solidus), °C 520
830
Specific Heat Capacity, J/kg-K 870
400
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
32

Otherwise Unclassified Properties

Base Metal Price, % relative 10
24
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 7.9
2.9
Embodied Energy, MJ/kg 150
49
Embodied Water, L/kg 1130
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
30
Resilience: Unit (Modulus of Resilience), kJ/m3 450
340
Stiffness to Weight: Axial, points 13
7.5
Stiffness to Weight: Bending, points 46
20
Strength to Weight: Axial, points 37
17
Strength to Weight: Bending, points 40
17
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
1.0 to 2.5
Antimony (Sb), % 0
0 to 0.080
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
56.5 to 67
Iron (Fe), % 0 to 1.0
0.5 to 2.0
Lead (Pb), % 0
0 to 1.5
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
1.0 to 3.5
Nickel (Ni), % 0
0 to 2.5
Silicon (Si), % 0.5 to 1.2
0 to 1.0
Tin (Sn), % 0
0 to 1.0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
18.9 to 41
Residuals, % 0 to 0.15
0