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EN 1.7027 Steel vs. 771.0 Aluminum

EN 1.7027 steel belongs to the iron alloys classification, while 771.0 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (6, 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 1.7027 steel and the bottom bar is 771.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
85 to 120
Elastic (Young's, Tensile) Modulus, GPa 190
70
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
26
Tensile Strength: Ultimate (UTS), MPa 490 to 1460
250 to 370

Thermal Properties

Latent Heat of Fusion, J/g 250
380
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1460
630
Melting Onset (Solidus), °C 1420
620
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 45
140 to 150
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
27
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
82

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
9.5
Density, g/cm3 7.8
3.0
Embodied Carbon, kg CO2/kg material 1.4
8.0
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 51
1130

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 17 to 52
23 to 35
Strength to Weight: Bending, points 18 to 36
29 to 39
Thermal Diffusivity, mm2/s 12
54 to 58
Thermal Shock Resistance, points 14 to 43
11 to 16

Alloy Composition

Aluminum (Al), % 0 to 0.050
90.5 to 92.5
Carbon (C), % 0.17 to 0.23
0
Chromium (Cr), % 0.9 to 1.2
0.060 to 0.2
Copper (Cu), % 0 to 0.3
0 to 0.1
Iron (Fe), % 97.1 to 98.5
0 to 0.15
Magnesium (Mg), % 0
0.8 to 1.0
Manganese (Mn), % 0.6 to 0.9
0 to 0.1
Oxygen (O), % 0 to 0.0020
0
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.4
0 to 0.15
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.1 to 0.2
Zinc (Zn), % 0
6.5 to 7.5
Residuals, % 0
0 to 0.15