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5070 Aluminum vs. S32906 Stainless Steel

5070 aluminum belongs to the aluminum alloys classification, while S32906 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 5070 aluminum and the bottom bar is S32906 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
210
Elongation at Break, % 20
28
Fatigue Strength, MPa 150
460
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Shear Strength, MPa 190
550
Tensile Strength: Ultimate (UTS), MPa 300
850
Tensile Strength: Yield (Proof), MPa 140
620

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 640
1430
Melting Onset (Solidus), °C 550
1380
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
13
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 31
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.8
3.7
Embodied Energy, MJ/kg 150
52
Embodied Water, L/kg 1170
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
220
Resilience: Unit (Modulus of Resilience), kJ/m3 150
950
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 31
30
Strength to Weight: Bending, points 37
26
Thermal Diffusivity, mm2/s 53
3.6
Thermal Shock Resistance, points 14
23

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.3
28 to 30
Copper (Cu), % 0 to 0.25
0 to 0.8
Iron (Fe), % 0 to 0.4
56.6 to 63.6
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
0.8 to 1.5
Molybdenum (Mo), % 0
1.5 to 2.6
Nickel (Ni), % 0
5.8 to 7.5
Nitrogen (N), % 0
0.3 to 0.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0