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EN AC-51500 Aluminum vs. SAE-AISI P6 Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while SAE-AISI P6 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, 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 EN AC-51500 aluminum and the bottom bar is SAE-AISI P6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Tensile Strength: Ultimate (UTS), MPa 280
630 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 430
250
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 120
43
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 88
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
4.6
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 9.0
1.8
Embodied Energy, MJ/kg 150
24
Embodied Water, L/kg 1150
59

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 52
24
Strength to Weight: Axial, points 29
22 to 68
Strength to Weight: Bending, points 36
21 to 44
Thermal Diffusivity, mm2/s 49
11
Thermal Shock Resistance, points 13
21 to 63

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0.050 to 0.15
Chromium (Cr), % 0
1.3 to 1.8
Copper (Cu), % 0 to 0.050
0 to 0.25
Iron (Fe), % 0 to 0.25
92.9 to 95
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0.35 to 0.7
Nickel (Ni), % 0
3.3 to 3.8
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 1.8 to 2.6
0.1 to 0.4
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0