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EN AC-43000 Aluminum vs. S20432 Stainless Steel

EN AC-43000 aluminum belongs to the aluminum alloys classification, while S20432 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-43000 aluminum and the bottom bar is S20432 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 60 to 94
170
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 1.1 to 2.5
45
Fatigue Strength, MPa 68 to 76
210
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 180 to 270
580
Tensile Strength: Yield (Proof), MPa 97 to 230
230

Thermal Properties

Latent Heat of Fusion, J/g 540
280
Maximum Temperature: Mechanical, °C 170
900
Melting Completion (Liquidus), °C 600
1410
Melting Onset (Solidus), °C 590
1370
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 140
15
Thermal Expansion, µm/m-K 22
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 130
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
13
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 7.8
2.7
Embodied Energy, MJ/kg 150
38
Embodied Water, L/kg 1070
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9 to 5.7
210
Resilience: Unit (Modulus of Resilience), kJ/m3 66 to 360
140
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 54
25
Strength to Weight: Axial, points 20 to 29
21
Strength to Weight: Bending, points 28 to 36
20
Thermal Diffusivity, mm2/s 60
4.0
Thermal Shock Resistance, points 8.6 to 12
13

Alloy Composition

Aluminum (Al), % 87 to 90.8
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 0 to 0.050
2.0 to 3.0
Iron (Fe), % 0 to 0.55
66.7 to 74
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.2 to 0.45
0
Manganese (Mn), % 0 to 0.45
3.0 to 5.0
Nickel (Ni), % 0 to 0.050
4.0 to 6.0
Nitrogen (N), % 0
0.050 to 0.2
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 9.0 to 11
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0