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7010 Aluminum vs. EN 1.4557 Stainless Steel

7010 aluminum belongs to the aluminum alloys classification, while EN 1.4557 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 7010 aluminum and the bottom bar is EN 1.4557 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.9 to 6.8
40
Fatigue Strength, MPa 160 to 190
260
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 520 to 590
560
Tensile Strength: Yield (Proof), MPa 410 to 540
300

Thermal Properties

Latent Heat of Fusion, J/g 380
300
Maximum Temperature: Mechanical, °C 200
1090
Melting Completion (Liquidus), °C 630
1460
Melting Onset (Solidus), °C 480
1420
Specific Heat Capacity, J/kg-K 860
460
Thermal Conductivity, W/m-K 150
15
Thermal Expansion, µm/m-K 24
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 120
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
29
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
5.6
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 1120
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 33
190
Resilience: Unit (Modulus of Resilience), kJ/m3 1230 to 2130
210
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 47 to 54
19
Strength to Weight: Bending, points 47 to 52
19
Thermal Diffusivity, mm2/s 58
4.0
Thermal Shock Resistance, points 22 to 26
12

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0 to 0.050
19.5 to 20.5
Copper (Cu), % 1.5 to 2.0
0.5 to 1.0
Iron (Fe), % 0 to 0.15
49.5 to 56.3
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
0 to 1.2
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.050
17.5 to 19.5
Nitrogen (N), % 0
0.18 to 0.24
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.12
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0 to 0.15
0