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6151 Aluminum vs. C27200 Brass

6151 aluminum belongs to the aluminum alloys classification, while C27200 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 6151 aluminum and the bottom bar is C27200 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
110
Elongation at Break, % 1.1 to 5.7
10 to 50
Poisson's Ratio 0.33
0.31
Shear Modulus, GPa 26
40
Shear Strength, MPa 190 to 200
230 to 320
Tensile Strength: Ultimate (UTS), MPa 330 to 340
370 to 590
Tensile Strength: Yield (Proof), MPa 270 to 280
150 to 410

Thermal Properties

Latent Heat of Fusion, J/g 410
170
Maximum Temperature: Mechanical, °C 170
130
Melting Completion (Liquidus), °C 650
920
Melting Onset (Solidus), °C 590
870
Specific Heat Capacity, J/kg-K 900
390
Thermal Conductivity, W/m-K 170
120
Thermal Expansion, µm/m-K 23
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
28
Electrical Conductivity: Equal Weight (Specific), % IACS 150
31

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
24
Density, g/cm3 2.7
8.1
Embodied Carbon, kg CO2/kg material 8.2
2.7
Embodied Energy, MJ/kg 150
45
Embodied Water, L/kg 1180
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.5 to 18
30 to 270
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 580
110 to 810
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 50
19
Strength to Weight: Axial, points 34
13 to 20
Strength to Weight: Bending, points 39
14 to 19
Thermal Diffusivity, mm2/s 70
37
Thermal Shock Resistance, points 15
12 to 20

Alloy Composition

Aluminum (Al), % 95.6 to 98.8
0
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.35
62 to 65
Iron (Fe), % 0 to 1.0
0 to 0.070
Lead (Pb), % 0
0 to 0.070
Magnesium (Mg), % 0.45 to 0.8
0
Manganese (Mn), % 0 to 0.2
0
Silicon (Si), % 0.6 to 1.2
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.25
34.6 to 38
Residuals, % 0
0 to 0.3