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EN AC-44000 Aluminum vs. S38100 Stainless Steel

EN AC-44000 aluminum belongs to the aluminum alloys classification, while S38100 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-44000 aluminum and the bottom bar is S38100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 51
190
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 7.3
45
Fatigue Strength, MPa 64
210
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 180
580
Tensile Strength: Yield (Proof), MPa 86
230

Thermal Properties

Latent Heat of Fusion, J/g 560
320
Maximum Temperature: Mechanical, °C 170
970
Melting Completion (Liquidus), °C 590
1400
Melting Onset (Solidus), °C 590
1350
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 21
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
20
Density, g/cm3 2.5
7.8
Embodied Carbon, kg CO2/kg material 7.8
3.8
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1070
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11
210
Resilience: Unit (Modulus of Resilience), kJ/m3 51
140
Stiffness to Weight: Axial, points 16
14
Stiffness to Weight: Bending, points 55
25
Strength to Weight: Axial, points 20
21
Strength to Weight: Bending, points 28
20
Thermal Diffusivity, mm2/s 61
4.0
Thermal Shock Resistance, points 8.4
13

Alloy Composition


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Aluminum (Al), % 87.1 to 90
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0 to 0.050
0
Iron (Fe), % 0 to 0.19
57.9 to 64
Magnesium (Mg), % 0 to 0.45
0
Manganese (Mn), % 0 to 0.1
0 to 2.0
Nickel (Ni), % 0
17.5 to 18.5
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 10 to 11.8
1.5 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0 to 0.1
0