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A201.0 Aluminum vs. SAE-AISI 4028 Steel

A201.0 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4028 steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, 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 A201.0 aluminum and the bottom bar is SAE-AISI 4028 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
190
Elongation at Break, % 4.7
14 to 23
Fatigue Strength, MPa 97
180 to 330
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Tensile Strength: Ultimate (UTS), MPa 480
490 to 630
Tensile Strength: Yield (Proof), MPa 420
260 to 520

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 170
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 570
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 120
49
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 90
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 11
2.1
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.1
1.5
Embodied Energy, MJ/kg 150
19
Embodied Water, L/kg 1150
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22
81 to 95
Resilience: Unit (Modulus of Resilience), kJ/m3 1250
180 to 720
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
24
Strength to Weight: Axial, points 44
17 to 22
Strength to Weight: Bending, points 45
18 to 21
Thermal Diffusivity, mm2/s 46
13
Thermal Shock Resistance, points 21
16 to 20

Alloy Composition

Aluminum (Al), % 93.7 to 95.5
0
Carbon (C), % 0
0.25 to 0.3
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.1
98.1 to 98.7
Magnesium (Mg), % 0.15 to 0.35
0
Manganese (Mn), % 0.2 to 0.4
0.7 to 0.9
Molybdenum (Mo), % 0
0.2 to 0.3
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.050
0.15 to 0.35
Sulfur (S), % 0
0.035 to 0.050
Titanium (Ti), % 0.15 to 0.35
0
Residuals, % 0 to 0.1
0