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EN 1.4971 Stainless Steel vs. 6023 Aluminum

EN 1.4971 stainless steel belongs to the iron alloys classification, while 6023 aluminum belongs to the aluminum alloys. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 EN 1.4971 stainless steel and the bottom bar is 6023 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
69
Elongation at Break, % 34
11
Fatigue Strength, MPa 270
120 to 130
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 81
26
Shear Strength, MPa 530
210 to 220
Tensile Strength: Ultimate (UTS), MPa 800
360
Tensile Strength: Yield (Proof), MPa 340
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1100
160
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
580
Specific Heat Capacity, J/kg-K 450
890
Thermal Conductivity, W/m-K 13
170
Thermal Expansion, µm/m-K 15
23

Otherwise Unclassified Properties

Base Metal Price, % relative 70
11
Density, g/cm3 8.4
2.8
Embodied Carbon, kg CO2/kg material 7.6
8.3
Embodied Energy, MJ/kg 110
150
Embodied Water, L/kg 300
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
38 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 280
670 to 690
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
49
Strength to Weight: Axial, points 26
35 to 36
Strength to Weight: Bending, points 23
40
Thermal Diffusivity, mm2/s 3.4
67
Thermal Shock Resistance, points 19
16

Alloy Composition

Aluminum (Al), % 0
94 to 97.7
Bismuth (Bi), % 0
0.3 to 0.8
Carbon (C), % 0.080 to 0.16
0
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0.2 to 0.5
Iron (Fe), % 24.3 to 37.1
0 to 0.5
Magnesium (Mg), % 0
0.4 to 0.9
Manganese (Mn), % 0 to 2.0
0.2 to 0.6
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0.6 to 1.4
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0.6 to 1.2
Tungsten (W), % 2.0 to 3.0
0
Residuals, % 0
0 to 0.15