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SAE-AISI D3 Steel vs. A242.0 Aluminum

SAE-AISI D3 steel belongs to the iron alloys classification, while A242.0 aluminum belongs to the aluminum alloys. There are 24 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 SAE-AISI D3 steel and the bottom bar is A242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 9.8 to 15
1.6
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 74
27
Tensile Strength: Ultimate (UTS), MPa 770 to 2050
220

Thermal Properties

Latent Heat of Fusion, J/g 270
390
Melting Completion (Liquidus), °C 1430
680
Melting Onset (Solidus), °C 1390
550
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 31
140
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
110

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
12
Density, g/cm3 7.7
3.1
Embodied Carbon, kg CO2/kg material 3.2
8.3
Embodied Energy, MJ/kg 48
150
Embodied Water, L/kg 100
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 28 to 74
20
Strength to Weight: Bending, points 24 to 47
26
Thermal Diffusivity, mm2/s 8.3
52
Thermal Shock Resistance, points 23 to 63
9.3

Alloy Composition

Aluminum (Al), % 0
89.3 to 93.1
Carbon (C), % 2.0 to 2.4
0
Chromium (Cr), % 11 to 13.5
0.15 to 0.25
Copper (Cu), % 0 to 0.25
3.7 to 4.5
Iron (Fe), % 80.3 to 87
0 to 0.8
Magnesium (Mg), % 0
1.2 to 1.7
Manganese (Mn), % 0 to 0.6
0 to 0.1
Nickel (Ni), % 0 to 0.3
1.8 to 2.3
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.070 to 0.2
Tungsten (W), % 0 to 1.0
0
Vanadium (V), % 0 to 1.0
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15