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6023 Aluminum vs. EN 1.4905 Stainless Steel

6023 aluminum belongs to the aluminum alloys classification, while EN 1.4905 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4905 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 11
19
Fatigue Strength, MPa 120 to 130
330
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 210 to 220
460
Tensile Strength: Ultimate (UTS), MPa 360
740
Tensile Strength: Yield (Proof), MPa 300 to 310
510

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 160
660
Melting Completion (Liquidus), °C 640
1480
Melting Onset (Solidus), °C 580
1440
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
26
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
3.7
Electrical Conductivity: Equal Weight (Specific), % IACS 140
4.2

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 2.8
7.9
Embodied Carbon, kg CO2/kg material 8.3
2.8
Embodied Energy, MJ/kg 150
40
Embodied Water, L/kg 1180
90

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
130
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
680
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 35 to 36
26
Strength to Weight: Bending, points 40
23
Thermal Diffusivity, mm2/s 67
7.0
Thermal Shock Resistance, points 16
25

Alloy Composition

Aluminum (Al), % 94 to 97.7
0 to 0.040
Bismuth (Bi), % 0.3 to 0.8
0
Boron (B), % 0
0.00050 to 0.0050
Carbon (C), % 0
0.090 to 0.13
Chromium (Cr), % 0
8.5 to 9.5
Copper (Cu), % 0.2 to 0.5
0
Iron (Fe), % 0 to 0.5
86.2 to 88.8
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0.3 to 0.6
Molybdenum (Mo), % 0
0.9 to 1.1
Nickel (Ni), % 0
0.1 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.050 to 0.090
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.6 to 1.4
0.1 to 0.5
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0.6 to 1.2
0
Tungsten (W), % 0
0.9 to 1.1
Vanadium (V), % 0
0.18 to 0.25
Residuals, % 0 to 0.15
0