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C69300 Brass vs. 2025 Aluminum

C69300 brass belongs to the copper alloys classification, while 2025 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, 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 C69300 brass and the bottom bar is 2025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
72
Elongation at Break, % 8.5 to 15
15
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 41
27
Shear Strength, MPa 330 to 370
240
Tensile Strength: Ultimate (UTS), MPa 550 to 630
400
Tensile Strength: Yield (Proof), MPa 300 to 390
260

Thermal Properties

Latent Heat of Fusion, J/g 240
400
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 880
640
Melting Onset (Solidus), °C 860
520
Specific Heat Capacity, J/kg-K 400
870
Thermal Conductivity, W/m-K 38
150
Thermal Expansion, µm/m-K 19
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
40
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
120

Otherwise Unclassified Properties

Base Metal Price, % relative 26
10
Density, g/cm3 8.2
3.0
Embodied Carbon, kg CO2/kg material 2.7
7.9
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 310
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 47 to 70
55
Resilience: Unit (Modulus of Resilience), kJ/m3 400 to 700
450
Stiffness to Weight: Axial, points 7.4
13
Stiffness to Weight: Bending, points 19
46
Strength to Weight: Axial, points 19 to 21
37
Strength to Weight: Bending, points 18 to 20
40
Thermal Diffusivity, mm2/s 12
58
Thermal Shock Resistance, points 19 to 22
18

Alloy Composition

Aluminum (Al), % 0
90.9 to 95.2
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 73 to 77
3.9 to 5.0
Iron (Fe), % 0 to 0.1
0 to 1.0
Lead (Pb), % 0 to 0.090
0
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.1
0.4 to 1.2
Nickel (Ni), % 0 to 0.1
0
Phosphorus (P), % 0.040 to 0.15
0
Silicon (Si), % 2.7 to 3.4
0.5 to 1.2
Tin (Sn), % 0 to 0.2
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 18.4 to 24.3
0 to 0.25
Residuals, % 0
0 to 0.15