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2025 Aluminum vs. C69710 Brass

2025 aluminum belongs to the aluminum alloys classification, while C69710 brass belongs to the copper 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 2025 aluminum and the bottom bar is C69710 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
110
Elongation at Break, % 15
25
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 27
41
Shear Strength, MPa 240
300
Tensile Strength: Ultimate (UTS), MPa 400
470
Tensile Strength: Yield (Proof), MPa 260
230

Thermal Properties

Latent Heat of Fusion, J/g 400
240
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 640
930
Melting Onset (Solidus), °C 520
880
Specific Heat Capacity, J/kg-K 870
400
Thermal Conductivity, W/m-K 150
40
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
8.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 10
26
Density, g/cm3 3.0
8.3
Embodied Carbon, kg CO2/kg material 7.9
2.7
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1130
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
99
Resilience: Unit (Modulus of Resilience), kJ/m3 450
250
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 46
19
Strength to Weight: Axial, points 37
16
Strength to Weight: Bending, points 40
16
Thermal Diffusivity, mm2/s 58
12
Thermal Shock Resistance, points 18
16

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
0
Arsenic (As), % 0
0.030 to 0.060
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 3.9 to 5.0
75 to 80
Iron (Fe), % 0 to 1.0
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Magnesium (Mg), % 0 to 0.050
0
Manganese (Mn), % 0.4 to 1.2
0 to 0.4
Silicon (Si), % 0.5 to 1.2
2.5 to 3.5
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
13.8 to 22
Residuals, % 0
0 to 0.5