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EN AC-51500 Aluminum vs. S46800 Stainless Steel

EN AC-51500 aluminum belongs to the aluminum alloys classification, while S46800 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 EN AC-51500 aluminum and the bottom bar is S46800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 80
180
Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 5.6
25
Fatigue Strength, MPa 120
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 280
470
Tensile Strength: Yield (Proof), MPa 160
230

Thermal Properties

Latent Heat of Fusion, J/g 430
290
Maximum Temperature: Mechanical, °C 170
920
Melting Completion (Liquidus), °C 630
1440
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 120
23
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 88
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.0
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1150
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
98
Resilience: Unit (Modulus of Resilience), kJ/m3 190
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 29
17
Strength to Weight: Bending, points 36
18
Thermal Diffusivity, mm2/s 49
6.1
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 89.8 to 93.1
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
18 to 20
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.25
76.5 to 81.8
Magnesium (Mg), % 4.7 to 6.0
0
Manganese (Mn), % 0.4 to 0.8
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.1 to 0.6
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.6
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0.070 to 0.3
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.15
0