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SAE-AISI 1008 Steel vs. 3103 Aluminum

SAE-AISI 1008 steel belongs to the iron alloys classification, while 3103 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 1008 steel and the bottom bar is 3103 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 93 to 100
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 190
70
Elongation at Break, % 22 to 33
1.1 to 28
Fatigue Strength, MPa 150 to 220
38 to 83
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 220 to 230
68 to 130
Tensile Strength: Ultimate (UTS), MPa 330 to 370
100 to 220
Tensile Strength: Yield (Proof), MPa 190 to 310
39 to 200

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
190
Melting Completion (Liquidus), °C 1470
660
Melting Onset (Solidus), °C 1430
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 62
160
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.9
42
Electrical Conductivity: Equal Weight (Specific), % IACS 7.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 45
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 78 to 91
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 92 to 260
11 to 280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 12 to 13
10 to 22
Strength to Weight: Bending, points 13 to 15
18 to 30
Thermal Diffusivity, mm2/s 17
64
Thermal Shock Resistance, points 10 to 12
4.6 to 9.9

Alloy Composition

Aluminum (Al), % 0
96.3 to 99.1
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 99.31 to 99.7
0 to 0.7
Magnesium (Mg), % 0
0 to 0.3
Manganese (Mn), % 0.3 to 0.5
0.9 to 1.5
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.5
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.2
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.15