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238.0 Aluminum vs. EN 1.4020 Stainless Steel

238.0 aluminum belongs to the aluminum alloys classification, while EN 1.4020 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 238.0 aluminum and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 76
200
Elongation at Break, % 1.5
13 to 34
Fatigue Strength, MPa 110
340 to 540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 28
77
Tensile Strength: Ultimate (UTS), MPa 210
770 to 1130
Tensile Strength: Yield (Proof), MPa 170
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 430
280
Maximum Temperature: Mechanical, °C 170
890
Melting Completion (Liquidus), °C 600
1390
Melting Onset (Solidus), °C 510
1350
Specific Heat Capacity, J/kg-K 840
480
Thermal Expansion, µm/m-K 21
17

Otherwise Unclassified Properties

Base Metal Price, % relative 12
11
Density, g/cm3 3.4
7.6
Embodied Carbon, kg CO2/kg material 7.4
2.5
Embodied Energy, MJ/kg 140
37
Embodied Water, L/kg 1040
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.9
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 180
460 to 2290
Stiffness to Weight: Axial, points 12
14
Stiffness to Weight: Bending, points 42
25
Strength to Weight: Axial, points 17
28 to 41
Strength to Weight: Bending, points 23
25 to 32
Thermal Shock Resistance, points 9.1
16 to 23

Alloy Composition

Aluminum (Al), % 81.9 to 84.9
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
16.5 to 19
Copper (Cu), % 9.5 to 10.5
0
Iron (Fe), % 1.0 to 1.5
62.8 to 71.8
Magnesium (Mg), % 0 to 0.25
0
Manganese (Mn), % 0
11 to 14
Nickel (Ni), % 0
0.5 to 2.5
Nitrogen (N), % 0
0.2 to 0.45
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 3.6 to 4.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 1.0 to 1.5
0