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7010 Aluminum vs. AISI 418 Stainless Steel

7010 aluminum belongs to the aluminum alloys classification, while AISI 418 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 3.9 to 6.8
17
Fatigue Strength, MPa 160 to 190
520
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 300 to 340
680
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
770
Melting Completion (Liquidus), °C 630
1500
Melting Onset (Solidus), °C 480
1460
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
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 120
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 3.0
8.0
Embodied Carbon, kg CO2/kg material 8.3
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1120
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 22 to 33
170
Resilience: Unit (Modulus of Resilience), kJ/m3 1230 to 2130
1830
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
24
Strength to Weight: Axial, points 47 to 54
38
Strength to Weight: Bending, points 47 to 52
29
Thermal Diffusivity, mm2/s 58
6.7
Thermal Shock Resistance, points 22 to 26
40

Alloy Composition

Aluminum (Al), % 87.9 to 90.6
0
Carbon (C), % 0
0.15 to 0.2
Chromium (Cr), % 0 to 0.050
12 to 14
Copper (Cu), % 1.5 to 2.0
0
Iron (Fe), % 0 to 0.15
78.5 to 83.6
Magnesium (Mg), % 2.1 to 2.6
0
Manganese (Mn), % 0 to 0.1
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0 to 0.050
1.8 to 2.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.12
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.060
0
Tungsten (W), % 0
2.5 to 3.5
Zinc (Zn), % 5.7 to 6.7
0
Zirconium (Zr), % 0.1 to 0.16
0
Residuals, % 0 to 0.15
0