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SAE-AISI 1018 Steel vs. 5005 Aluminum

SAE-AISI 1018 steel belongs to the iron alloys classification, while 5005 aluminum belongs to the aluminum alloys. There are 31 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 SAE-AISI 1018 steel and the bottom bar is 5005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 140
28 to 64
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 17 to 27
1.1 to 23
Fatigue Strength, MPa 180 to 270
38 to 86
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 280 to 300
70 to 130
Tensile Strength: Ultimate (UTS), MPa 430 to 480
110 to 230
Tensile Strength: Yield (Proof), MPa 240 to 400
41 to 210

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
180
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
630
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 52
200
Thermal Expansion, µm/m-K 12
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
52
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
170

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.3
Embodied Energy, MJ/kg 18
150
Embodied Water, L/kg 46
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75 to 100
2.3 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 430
12 to 320
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 15 to 17
11 to 23
Strength to Weight: Bending, points 16 to 17
19 to 31
Thermal Diffusivity, mm2/s 14
82
Thermal Shock Resistance, points 14 to 15
4.9 to 10

Alloy Composition

Aluminum (Al), % 0
97 to 99.5
Carbon (C), % 0.15 to 0.2
0
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 98.8 to 99.25
0 to 0.7
Magnesium (Mg), % 0
0.5 to 1.1
Manganese (Mn), % 0.6 to 0.9
0 to 0.2
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0
0 to 0.3
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15