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6023 Aluminum vs. EN 1.4378 Stainless Steel

6023 aluminum belongs to the aluminum alloys classification, while EN 1.4378 stainless steel belongs to the iron 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 6023 aluminum and the bottom bar is EN 1.4378 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 11
14 to 34
Fatigue Strength, MPa 120 to 130
340 to 550
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 210 to 220
510 to 680
Tensile Strength: Ultimate (UTS), MPa 360
760 to 1130
Tensile Strength: Yield (Proof), MPa 300 to 310
430 to 970

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 160
910
Melting Completion (Liquidus), °C 640
1390
Melting Onset (Solidus), °C 580
1350
Specific Heat Capacity, J/kg-K 890
480
Thermal Expansion, µm/m-K 23
17

Otherwise Unclassified Properties

Base Metal Price, % relative 11
12
Density, g/cm3 2.8
7.6
Embodied Carbon, kg CO2/kg material 8.3
2.7
Embodied Energy, MJ/kg 150
39
Embodied Water, L/kg 1180
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
150 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
470 to 2370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 35 to 36
28 to 41
Strength to Weight: Bending, points 40
24 to 31
Thermal Shock Resistance, points 16
16 to 23

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
0 to 0.080
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 0.2 to 0.5
0
Iron (Fe), % 0 to 0.5
61.2 to 69
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
11.5 to 14.5
Nickel (Ni), % 0
2.3 to 3.7
Nitrogen (N), % 0
0.2 to 0.4
Phosphorus (P), % 0
0 to 0.060
Silicon (Si), % 0.6 to 1.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0