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C26000 Brass vs. 4145 Aluminum

C26000 brass belongs to the copper alloys classification, while 4145 aluminum belongs to the aluminum alloys. There are 29 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 C26000 brass and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
73
Elongation at Break, % 2.5 to 66
2.2
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 41
28
Shear Strength, MPa 230 to 390
69
Tensile Strength: Ultimate (UTS), MPa 320 to 680
120
Tensile Strength: Yield (Proof), MPa 110 to 570
68

Thermal Properties

Latent Heat of Fusion, J/g 180
540
Maximum Temperature: Mechanical, °C 140
160
Melting Completion (Liquidus), °C 950
590
Melting Onset (Solidus), °C 920
520
Specific Heat Capacity, J/kg-K 390
880
Thermal Conductivity, W/m-K 120
100
Thermal Expansion, µm/m-K 20
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
26
Electrical Conductivity: Equal Weight (Specific), % IACS 31
84

Otherwise Unclassified Properties

Base Metal Price, % relative 25
10
Density, g/cm3 8.2
2.8
Embodied Carbon, kg CO2/kg material 2.7
7.6
Embodied Energy, MJ/kg 45
140
Embodied Water, L/kg 320
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.1 to 420
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 51 to 1490
31
Stiffness to Weight: Axial, points 7.2
14
Stiffness to Weight: Bending, points 19
50
Strength to Weight: Axial, points 11 to 23
12
Strength to Weight: Bending, points 13 to 21
19
Thermal Diffusivity, mm2/s 38
42
Thermal Shock Resistance, points 11 to 23
5.5

Alloy Composition

Aluminum (Al), % 0
83 to 87.4
Bismuth (Bi), % 0 to 0.0059
0
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 68.5 to 71.5
3.3 to 4.7
Iron (Fe), % 0 to 0.050
0 to 0.8
Lead (Pb), % 0 to 0.070
0
Magnesium (Mg), % 0
0 to 0.15
Manganese (Mn), % 0
0 to 0.15
Silicon (Si), % 0
9.3 to 10.7
Zinc (Zn), % 28.1 to 31.5
0 to 0.2
Residuals, % 0
0 to 0.15