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SAE-AISI T15 Steel vs. EN AC-51200 Aluminum

SAE-AISI T15 steel belongs to the iron alloys classification, while EN AC-51200 aluminum belongs to the aluminum 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 SAE-AISI T15 steel and the bottom bar is EN AC-51200 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
67
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 76
25
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
220

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Melting Completion (Liquidus), °C 1690
640
Melting Onset (Solidus), °C 1640
570
Specific Heat Capacity, J/kg-K 430
910
Thermal Conductivity, W/m-K 21
92
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 43
9.5
Density, g/cm3 8.7
2.6
Embodied Carbon, kg CO2/kg material 16
9.6
Embodied Energy, MJ/kg 250
150
Embodied Water, L/kg 140
1150

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
51
Strength to Weight: Axial, points 26 to 71
24
Strength to Weight: Bending, points 22 to 43
31
Thermal Diffusivity, mm2/s 5.6
39
Thermal Shock Resistance, points 26 to 70
10

Alloy Composition


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Aluminum (Al), % 0
84.5 to 92
Carbon (C), % 1.5 to 1.6
0
Chromium (Cr), % 3.8 to 5.0
0
Cobalt (Co), % 4.8 to 5.3
0
Copper (Cu), % 0 to 0.25
0 to 0.1
Iron (Fe), % 67.5 to 73.5
0 to 1.0
Lead (Pb), % 0
0 to 0.1
Magnesium (Mg), % 0
8.0 to 10.5
Manganese (Mn), % 0.15 to 0.4
0 to 0.55
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.3
0 to 0.1
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
0 to 2.5
Sulfur (S), % 0 to 0.030
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15