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4115 Aluminum vs. EN 1.4020 Stainless Steel

4115 aluminum belongs to the aluminum alloys classification, while EN 1.4020 stainless steel belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (6, 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 4115 aluminum and the bottom bar is EN 1.4020 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 38 to 68
190 to 340
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 1.1 to 11
13 to 34
Fatigue Strength, MPa 39 to 76
340 to 540
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 71 to 130
510 to 680
Tensile Strength: Ultimate (UTS), MPa 120 to 220
770 to 1130
Tensile Strength: Yield (Proof), MPa 39 to 190
430 to 950

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Maximum Temperature: Mechanical, °C 160
890
Melting Completion (Liquidus), °C 640
1390
Melting Onset (Solidus), °C 590
1350
Specific Heat Capacity, J/kg-K 900
480
Thermal Expansion, µm/m-K 23
17

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 8.1
2.5
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1160
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 10
140 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 270
460 to 2290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12 to 23
28 to 41
Strength to Weight: Bending, points 20 to 30
25 to 32
Thermal Shock Resistance, points 5.2 to 9.9
16 to 23

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
16.5 to 19
Copper (Cu), % 0.1 to 0.5
0
Iron (Fe), % 0 to 0.7
62.8 to 71.8
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
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), % 1.8 to 2.2
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0