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EN AC-51500 Aluminum vs. S21600 Stainless Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while S21600 stainless steel belongs to the iron alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, 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 EN AC-51500 aluminum and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
200
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
46
Fatigue Strength, MPa 120
360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
79
Tensile Strength: Ultimate (UTS), MPa 280
710
Tensile Strength: Yield (Proof), MPa 160
390

Thermal Properties

Latent Heat of Fusion, J/g 430
290
Maximum Temperature: Mechanical, °C 170
990
Melting Completion (Liquidus), °C 630
1420
Melting Onset (Solidus), °C 590
1380
Specific Heat Capacity, J/kg-K 910
480
Thermal Expansion, µm/m-K 23
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
17
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.0
3.6
Embodied Energy, MJ/kg 150
50
Embodied Water, L/kg 1150
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
270
Resilience: Unit (Modulus of Resilience), kJ/m3 190
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 36
23
Thermal Shock Resistance, points 13
15

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17.5 to 22
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
57.6 to 67.8
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
7.5 to 9.0
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0
5.0 to 7.0
Nitrogen (N), % 0
0.25 to 0.5
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 1.8 to 2.6
0 to 0.75
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0