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EN 1.8872 Steel vs. 8079 Aluminum

EN 1.8872 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 (3, 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 1.8872 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, % 21
2.2
Fatigue Strength, MPa 310
56
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 610
150
Tensile Strength: Yield (Proof), MPa 450
120

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 410
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 39
230
Thermal Expansion, µm/m-K 13
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
58
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
190

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
9.0
Density, g/cm3 7.9
2.8
Embodied Carbon, kg CO2/kg material 1.7
8.2
Embodied Energy, MJ/kg 22
150
Embodied Water, L/kg 50
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
3.1
Resilience: Unit (Modulus of Resilience), kJ/m3 530
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22
15
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 10
92
Thermal Shock Resistance, points 18
6.4

Alloy Composition

Aluminum (Al), % 0
98.1 to 99.3
Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.18
0
Chromium (Cr), % 0 to 0.5
0
Copper (Cu), % 0 to 0.3
0 to 0.050
Iron (Fe), % 95.1 to 100
0.7 to 1.3
Manganese (Mn), % 0 to 1.7
0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0 to 0.5
0.050 to 0.3
Sulfur (S), % 0 to 0.0080
0
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.080
0
Zinc (Zn), % 0
0 to 0.1
Zirconium (Zr), % 0 to 0.050
0
Residuals, % 0
0 to 0.15