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5070 Aluminum vs. S20910 Stainless Steel

5070 aluminum belongs to the aluminum alloys classification, while S20910 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, 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 S20910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 20
14 to 39
Fatigue Strength, MPa 150
310 to 460
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Shear Strength, MPa 190
500 to 570
Tensile Strength: Ultimate (UTS), MPa 300
780 to 940
Tensile Strength: Yield (Proof), MPa 140
430 to 810

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 190
1080
Melting Completion (Liquidus), °C 640
1420
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
16

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.8
4.8
Embodied Energy, MJ/kg 150
68
Embodied Water, L/kg 1170
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 51
120 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 150
460 to 1640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 31
28 to 33
Strength to Weight: Bending, points 37
24 to 27
Thermal Diffusivity, mm2/s 53
3.6
Thermal Shock Resistance, points 14
17 to 21

Alloy Composition


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Aluminum (Al), % 92.4 to 95.7
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0 to 0.3
20.5 to 23.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.4
52.1 to 62.1
Magnesium (Mg), % 3.5 to 4.5
0
Manganese (Mn), % 0.4 to 0.8
4.0 to 6.0
Molybdenum (Mo), % 0
1.5 to 3.0
Nickel (Ni), % 0
11.5 to 13.5
Niobium (Nb), % 0
0.1 to 0.3
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Vanadium (V), % 0
0.1 to 0.3
Zinc (Zn), % 0.4 to 0.8
0
Residuals, % 0 to 0.15
0