MakeItFrom.com
Menu (ESC)

7020 Aluminum vs. EN 1.1172 Steel

7020 aluminum belongs to the aluminum alloys classification, while EN 1.1172 steel belongs to the iron 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 7020 aluminum and the bottom bar is EN 1.1172 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 45 to 100
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 190 to 390
480 to 1720

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 210
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 610
1420
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
51
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 120
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1150
46

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 18 to 37
17 to 61
Strength to Weight: Bending, points 25 to 41
17 to 41
Thermal Diffusivity, mm2/s 59
14
Thermal Shock Resistance, points 8.3 to 17
15 to 55

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0
Carbon (C), % 0
0.32 to 0.39
Chromium (Cr), % 0.1 to 0.35
0
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 0 to 0.4
98.2 to 99.18
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0.5 to 0.8
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.35
0 to 0.3
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0