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7010 Aluminum vs. S42300 Stainless Steel

7010 aluminum belongs to the aluminum alloys classification, while S42300 stainless steel belongs to the iron alloys. There are 30 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 S42300 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.9 to 6.8
9.1
Fatigue Strength, MPa 160 to 190
440
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 300 to 340
650
Tensile Strength: Ultimate (UTS), MPa 520 to 590
1100
Tensile Strength: Yield (Proof), MPa 410 to 540
850

Thermal Properties

Latent Heat of Fusion, J/g 380
270
Maximum Temperature: Mechanical, °C 200
750
Melting Completion (Liquidus), °C 630
1470
Melting Onset (Solidus), °C 480
1420
Specific Heat Capacity, J/kg-K 860
470
Thermal Conductivity, W/m-K 150
25
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
4.5
Electrical Conductivity: Equal Weight (Specific), % IACS 120
5.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.3
3.2
Embodied Energy, MJ/kg 150
44
Embodied Water, L/kg 1120
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 33
93
Resilience: Unit (Modulus of Resilience), kJ/m3 1230 to 2130
1840
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 47 to 54
39
Strength to Weight: Bending, points 47 to 52
30
Thermal Diffusivity, mm2/s 58
6.8
Thermal Shock Resistance, points 22 to 26
40

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0
Carbon (C), % 0
0.27 to 0.32
Chromium (Cr), % 0 to 0.050
11 to 12
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 0 to 0.15
82 to 85.1
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
1.0 to 1.4
Molybdenum (Mo), % 0
2.5 to 3.0
Nickel (Ni), % 0 to 0.050
0 to 0.5
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.12
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.060
0
Vanadium (V), % 0
0.2 to 0.3
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0 to 0.15
0