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SAE-AISI T15 Steel vs. 4015 Aluminum

SAE-AISI T15 steel belongs to the iron alloys classification, while 4015 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 4015 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 76
26
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
130 to 220

Thermal Properties

Latent Heat of Fusion, J/g 250
420
Melting Completion (Liquidus), °C 1690
640
Melting Onset (Solidus), °C 1640
600
Specific Heat Capacity, J/kg-K 430
900
Thermal Conductivity, W/m-K 21
160
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 43
9.5
Density, g/cm3 8.7
2.7
Embodied Carbon, kg CO2/kg material 16
8.1
Embodied Energy, MJ/kg 250
150
Embodied Water, L/kg 140
1160

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 22
50
Strength to Weight: Axial, points 26 to 71
13 to 22
Strength to Weight: Bending, points 22 to 43
21 to 30
Thermal Diffusivity, mm2/s 5.6
66
Thermal Shock Resistance, points 26 to 70
5.7 to 9.7

Alloy Composition

Aluminum (Al), % 0
94.9 to 97.9
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 0.2
Iron (Fe), % 67.5 to 73.5
0 to 0.7
Magnesium (Mg), % 0
0.1 to 0.5
Manganese (Mn), % 0.15 to 0.4
0.6 to 1.2
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0.15 to 0.4
1.4 to 2.2
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 11.8 to 13
0
Vanadium (V), % 4.5 to 5.3
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants