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SAE-AISI T15 Steel vs. 238.0 Aluminum

SAE-AISI T15 steel belongs to the iron alloys classification, while 238.0 aluminum belongs to the aluminum alloys. There are 21 material properties with values for both materials. Properties with values for just one material (9, 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 238.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
76
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 76
28
Tensile Strength: Ultimate (UTS), MPa 830 to 2240
210

Thermal Properties

Latent Heat of Fusion, J/g 250
430
Melting Completion (Liquidus), °C 1690
600
Melting Onset (Solidus), °C 1640
510
Specific Heat Capacity, J/kg-K 430
840
Thermal Conductivity, W/m-K 21
100
Thermal Expansion, µm/m-K 12
21

Otherwise Unclassified Properties

Base Metal Price, % relative 43
12
Density, g/cm3 8.7
3.4
Embodied Carbon, kg CO2/kg material 16
7.4
Embodied Energy, MJ/kg 250
140
Embodied Water, L/kg 140
1040

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 22
42
Strength to Weight: Axial, points 26 to 71
17
Strength to Weight: Bending, points 22 to 43
23
Thermal Diffusivity, mm2/s 5.6
37
Thermal Shock Resistance, points 26 to 70
9.1

Alloy Composition

Aluminum (Al), % 0
81.9 to 84.9
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
9.5 to 10.5
Iron (Fe), % 67.5 to 73.5
1.0 to 1.5
Magnesium (Mg), % 0
0 to 0.25
Manganese (Mn), % 0.15 to 0.4
0
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
3.6 to 4.4
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
1.0 to 1.5