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EN 1.4020 Stainless Steel vs. EN AC-51100 Aluminum

EN 1.4020 stainless steel belongs to the iron alloys classification, while EN AC-51100 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 1.4020 stainless steel and the bottom bar is EN AC-51100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 340
57
Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 13 to 34
4.5
Fatigue Strength, MPa 340 to 540
58
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 770 to 1130
160
Tensile Strength: Yield (Proof), MPa 430 to 950
80

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 890
170
Melting Completion (Liquidus), °C 1390
640
Melting Onset (Solidus), °C 1350
620
Specific Heat Capacity, J/kg-K 480
900
Thermal Expansion, µm/m-K 17
23

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 7.6
2.7
Embodied Carbon, kg CO2/kg material 2.5
8.7
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 220
6.0
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 2290
47
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 28 to 41
17
Strength to Weight: Bending, points 25 to 32
25
Thermal Shock Resistance, points 16 to 23
7.3

Alloy Composition

Aluminum (Al), % 0
94.5 to 97.5
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 16.5 to 19
0
Copper (Cu), % 0
0 to 0.050
Iron (Fe), % 62.8 to 71.8
0 to 0.55
Magnesium (Mg), % 0
2.5 to 3.5
Manganese (Mn), % 11 to 14
0 to 0.45
Nickel (Ni), % 0.5 to 2.5
0
Nitrogen (N), % 0.2 to 0.45
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.55
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15