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355.0 Aluminum vs. SAE-AISI D3 Steel

355.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI D3 steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 355.0 aluminum and the bottom bar is SAE-AISI D3 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 1.5 to 2.6
9.8 to 15
Fatigue Strength, MPa 55 to 70
310 to 940
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
74
Shear Strength, MPa 150 to 240
470 to 1220
Tensile Strength: Ultimate (UTS), MPa 200 to 260
770 to 2050
Tensile Strength: Yield (Proof), MPa 150 to 190
480 to 1550

Thermal Properties

Latent Heat of Fusion, J/g 470
270
Melting Completion (Liquidus), °C 620
1430
Melting Onset (Solidus), °C 560
1390
Specific Heat Capacity, J/kg-K 890
480
Thermal Conductivity, W/m-K 150 to 170
31
Thermal Expansion, µm/m-K 22
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38 to 43
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120 to 140
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
8.0
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.0
3.2
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1120
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 5.9
97 to 180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 20 to 27
28 to 74
Strength to Weight: Bending, points 28 to 33
24 to 47
Thermal Diffusivity, mm2/s 60 to 69
8.3
Thermal Shock Resistance, points 9.1 to 12
23 to 63

Alloy Composition

Aluminum (Al), % 90.3 to 94.1
0
Carbon (C), % 0
2.0 to 2.4
Chromium (Cr), % 0 to 0.25
11 to 13.5
Copper (Cu), % 1.0 to 1.5
0 to 0.25
Iron (Fe), % 0 to 0.6
80.3 to 87
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.5
0 to 0.6
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 4.5 to 5.5
0 to 0.6
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
0 to 1.0
Vanadium (V), % 0
0 to 1.0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0