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SAE-AISI 1020 Steel vs. 1070A Aluminum

SAE-AISI 1020 steel belongs to the iron alloys classification, while 1070A 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 1020 steel and the bottom bar is 1070A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120 to 130
18 to 40
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 17 to 28
2.3 to 33
Fatigue Strength, MPa 180 to 250
17 to 51
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 280
44 to 81
Tensile Strength: Ultimate (UTS), MPa 430 to 460
68 to 140
Tensile Strength: Yield (Proof), MPa 240 to 380
17 to 120

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
230
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
60
Electrical Conductivity: Equal Weight (Specific), % IACS 12
200

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.0
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 45
1200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 72 to 100
3.0 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 380
2.1 to 100
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 15 to 16
7.0 to 14
Strength to Weight: Bending, points 16 to 17
14 to 22
Thermal Diffusivity, mm2/s 14
94
Thermal Shock Resistance, points 13 to 14
3.1 to 6.3

Alloy Composition

Aluminum (Al), % 0
99.7 to 100
Carbon (C), % 0.18 to 0.23
0
Copper (Cu), % 0
0 to 0.030
Iron (Fe), % 99.08 to 99.52
0 to 0.25
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0.3 to 0.6
0 to 0.030
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.2
Sulfur (S), % 0 to 0.050
0
Titanium (Ti), % 0
0 to 0.030
Zinc (Zn), % 0
0 to 0.070