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EN 1.0308 Steel vs. 8079 Aluminum

EN 1.0308 steel belongs to the iron alloys classification, while 8079 aluminum belongs to the aluminum 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 EN 1.0308 steel and the bottom bar is 8079 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 7.8 to 28
2.2
Fatigue Strength, MPa 140 to 200
56
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 360 to 440
150
Tensile Strength: Yield (Proof), MPa 190 to 340
120

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 400
170
Melting Completion (Liquidus), °C 1460
650
Melting Onset (Solidus), °C 1420
640
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 51
230
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
58
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
190

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
9.0
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 46
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32 to 95
3.1
Resilience: Unit (Modulus of Resilience), kJ/m3 93 to 300
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 13 to 16
15
Strength to Weight: Bending, points 14 to 16
22
Thermal Diffusivity, mm2/s 14
92
Thermal Shock Resistance, points 11 to 14
6.4

Alloy Composition

Aluminum (Al), % 0
98.1 to 99.3
Carbon (C), % 0 to 0.17
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 98.2 to 100
0.7 to 1.3
Manganese (Mn), % 0 to 1.2
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.35
0.050 to 0.3
Sulfur (S), % 0 to 0.045
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15