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EN AC-21200 Aluminum vs. S31060 Stainless Steel

EN AC-21200 aluminum belongs to the aluminum alloys classification, while S31060 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-21200 aluminum and the bottom bar is S31060 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 120 to 130
190
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 3.9 to 6.2
46
Fatigue Strength, MPa 110 to 130
290
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 410 to 440
680
Tensile Strength: Yield (Proof), MPa 270 to 360
310

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 170
1080
Melting Completion (Liquidus), °C 660
1420
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 100
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
18
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
3.4
Embodied Energy, MJ/kg 150
48
Embodied Water, L/kg 1150
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 22
260
Resilience: Unit (Modulus of Resilience), kJ/m3 500 to 930
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 38 to 40
24
Strength to Weight: Bending, points 41 to 43
22
Thermal Diffusivity, mm2/s 49
4.0
Thermal Shock Resistance, points 18 to 19
15

Alloy Composition

Aluminum (Al), % 93.3 to 95.7
0
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0
0.050 to 0.1
Cerium (Ce), % 0
0 to 0.070
Chromium (Cr), % 0
22 to 24
Copper (Cu), % 4.0 to 5.0
0
Iron (Fe), % 0 to 0.2
61.4 to 67.8
Lanthanum (La), % 0
0 to 0.070
Lead (Pb), % 0 to 0.030
0
Magnesium (Mg), % 0.15 to 0.5
0
Manganese (Mn), % 0.2 to 0.5
0 to 1.0
Nickel (Ni), % 0 to 0.050
10 to 12.5
Nitrogen (N), % 0
0.18 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.1
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.1
0