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6023 Aluminum vs. EN 1.4658 Stainless Steel

6023 aluminum belongs to the aluminum alloys classification, while EN 1.4658 stainless steel belongs to the iron alloys. There are 28 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 6023 aluminum and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 11
28
Fatigue Strength, MPa 120 to 130
530
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
81
Shear Strength, MPa 210 to 220
580
Tensile Strength: Ultimate (UTS), MPa 360
900
Tensile Strength: Yield (Proof), MPa 300 to 310
730

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 580
1400
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
16
Thermal Expansion, µm/m-K 23
13

Otherwise Unclassified Properties

Base Metal Price, % relative 11
25
Density, g/cm3 2.8
7.8
Embodied Carbon, kg CO2/kg material 8.3
4.5
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1180
200

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
240
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
1280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 49
25
Strength to Weight: Axial, points 35 to 36
32
Strength to Weight: Bending, points 40
26
Thermal Diffusivity, mm2/s 67
4.3
Thermal Shock Resistance, points 16
24

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 0.2 to 0.5
0 to 1.0
Iron (Fe), % 0 to 0.5
50.9 to 63.7
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
5.5 to 9.5
Nitrogen (N), % 0
0.3 to 0.5
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0.6 to 1.4
0 to 0.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0