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5070 Aluminum vs. S64512 Stainless Steel

5070 aluminum belongs to the aluminum alloys classification, while S64512 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 5070 aluminum and the bottom bar is S64512 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 20
17
Fatigue Strength, MPa 150
540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 190
700
Tensile Strength: Ultimate (UTS), MPa 300
1140
Tensile Strength: Yield (Proof), MPa 140
890

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 190
750
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 550
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
28
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
3.6
Electrical Conductivity: Equal Weight (Specific), % IACS 100
4.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1170
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
180
Resilience: Unit (Modulus of Resilience), kJ/m3 150
2020
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 31
40
Strength to Weight: Bending, points 37
31
Thermal Diffusivity, mm2/s 53
7.5
Thermal Shock Resistance, points 14
42

Alloy Composition

Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0.080 to 0.15
Chromium (Cr), % 0 to 0.3
11 to 12.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
80.6 to 84.7
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0.5 to 0.9
Molybdenum (Mo), % 0
1.5 to 2.0
Nickel (Ni), % 0
2.0 to 3.0
Nitrogen (N), % 0
0.010 to 0.050
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.25
0 to 0.35
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0.25 to 0.4
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0