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EN AC-51500 Aluminum vs. S46500 Stainless Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while S46500 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, 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 S46500 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 5.6
2.3 to 14
Fatigue Strength, MPa 120
550 to 890
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 280
1260 to 1930
Tensile Strength: Yield (Proof), MPa 160
1120 to 1810

Thermal Properties

Latent Heat of Fusion, J/g 430
280
Maximum Temperature: Mechanical, °C 170
780
Melting Completion (Liquidus), °C 630
1450
Melting Onset (Solidus), °C 590
1410
Specific Heat Capacity, J/kg-K 910
470
Thermal Expansion, µm/m-K 23
11

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 9.0
3.6
Embodied Energy, MJ/kg 150
51
Embodied Water, L/kg 1150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
43 to 210
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
44 to 68
Strength to Weight: Bending, points 36
33 to 44
Thermal Shock Resistance, points 13
44 to 67

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.020
Chromium (Cr), % 0
11 to 12.5
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
72.6 to 76.1
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 0.25
Molybdenum (Mo), % 0
0.75 to 1.3
Nickel (Ni), % 0
10.7 to 11.3
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0
0 to 0.015
Silicon (Si), % 1.8 to 2.6
0 to 0.25
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.25
1.5 to 1.8
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0