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6023 Aluminum vs. N08031 Stainless Steel

6023 aluminum belongs to the aluminum alloys classification, while N08031 stainless steel belongs to the iron alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 11
45
Fatigue Strength, MPa 120 to 130
290
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
81
Shear Strength, MPa 210 to 220
510
Tensile Strength: Ultimate (UTS), MPa 360
730
Tensile Strength: Yield (Proof), MPa 300 to 310
310

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 160
1100
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 580
1390
Specific Heat Capacity, J/kg-K 890
460
Thermal Conductivity, W/m-K 170
12
Thermal Expansion, µm/m-K 23
18

Otherwise Unclassified Properties

Base Metal Price, % relative 11
39
Density, g/cm3 2.8
8.1
Embodied Carbon, kg CO2/kg material 8.3
7.1
Embodied Energy, MJ/kg 150
96
Embodied Water, L/kg 1180
240

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
270
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
24
Strength to Weight: Axial, points 35 to 36
25
Strength to Weight: Bending, points 40
22
Thermal Diffusivity, mm2/s 67
3.1
Thermal Shock Resistance, points 16
14

Alloy Composition

Aluminum (Al), % 94 to 97.7
0
Bismuth (Bi), % 0.3 to 0.8
0
Carbon (C), % 0
0 to 0.015
Chromium (Cr), % 0
26 to 28
Copper (Cu), % 0.2 to 0.5
1.0 to 1.4
Iron (Fe), % 0 to 0.5
29 to 36.9
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0
30 to 32
Nitrogen (N), % 0
0.15 to 0.25
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0.6 to 1.4
0 to 0.3
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0