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EN AC-45000 Aluminum vs. SAE-AISI T15 Steel

EN AC-45000 aluminum belongs to the aluminum alloys classification, while SAE-AISI T15 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, 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-45000 aluminum and the bottom bar is SAE-AISI T15 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 180
830 to 2240

Thermal Properties

Latent Heat of Fusion, J/g 470
250
Melting Completion (Liquidus), °C 640
1690
Melting Onset (Solidus), °C 520
1640
Specific Heat Capacity, J/kg-K 870
430
Thermal Conductivity, W/m-K 120
21
Thermal Expansion, µm/m-K 22
12

Otherwise Unclassified Properties

Base Metal Price, % relative 11
43
Density, g/cm3 3.0
8.7
Embodied Carbon, kg CO2/kg material 7.7
16
Embodied Energy, MJ/kg 140
250
Embodied Water, L/kg 1070
140

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 47
22
Strength to Weight: Axial, points 17
26 to 71
Strength to Weight: Bending, points 24
22 to 43
Thermal Diffusivity, mm2/s 47
5.6
Thermal Shock Resistance, points 8.0
26 to 70

Alloy Composition

Aluminum (Al), % 82.2 to 91.8
0
Carbon (C), % 0
1.5 to 1.6
Chromium (Cr), % 0 to 0.15
3.8 to 5.0
Cobalt (Co), % 0
4.8 to 5.3
Copper (Cu), % 3.0 to 5.0
0 to 0.25
Iron (Fe), % 0 to 1.0
67.5 to 73.5
Lead (Pb), % 0 to 0.3
0
Magnesium (Mg), % 0 to 0.55
0
Manganese (Mn), % 0.2 to 0.65
0.15 to 0.4
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0 to 0.45
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 5.0 to 7.0
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.15
0
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
11.8 to 13
Vanadium (V), % 0
4.5 to 5.3
Zinc (Zn), % 0 to 2.0
0
Residuals, % 0 to 0.35
0