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7020 Aluminum vs. EN 1.4913 Stainless Steel

7020 aluminum belongs to the aluminum alloys classification, while EN 1.4913 stainless steel belongs to the iron alloys. There are 30 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 7020 aluminum and the bottom bar is EN 1.4913 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 8.4 to 14
14 to 22
Fatigue Strength, MPa 110 to 130
320 to 480
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Shear Strength, MPa 110 to 230
550 to 590
Tensile Strength: Ultimate (UTS), MPa 190 to 390
870 to 980
Tensile Strength: Yield (Proof), MPa 120 to 310
480 to 850

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 210
700
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 610
1410
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 150
24
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 39
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 120
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1150
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23 to 46
130 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 690
600 to 1860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 18 to 37
31 to 35
Strength to Weight: Bending, points 25 to 41
26 to 28
Thermal Diffusivity, mm2/s 59
6.5
Thermal Shock Resistance, points 8.3 to 17
31 to 34

Alloy Composition

Aluminum (Al), % 91.2 to 94.8
0 to 0.020
Boron (B), % 0
0 to 0.0015
Carbon (C), % 0
0.17 to 0.23
Chromium (Cr), % 0.1 to 0.35
10 to 11.5
Copper (Cu), % 0 to 0.2
0
Iron (Fe), % 0 to 0.4
84.5 to 88.3
Magnesium (Mg), % 1.0 to 1.4
0
Manganese (Mn), % 0.050 to 0.5
0.4 to 0.9
Molybdenum (Mo), % 0
0.5 to 0.8
Nickel (Ni), % 0
0.2 to 0.6
Niobium (Nb), % 0
0.25 to 0.55
Nitrogen (N), % 0
0.050 to 0.1
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.35
0 to 0.5
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 4.0 to 5.0
0
Zirconium (Zr), % 0.080 to 0.25
0
Residuals, % 0 to 0.15
0

Comparable Variants