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6025 Aluminum vs. EN 1.4123 Stainless Steel

6025 aluminum belongs to the aluminum alloys classification, while EN 1.4123 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 6025 aluminum and the bottom bar is EN 1.4123 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 190 to 240
720 to 810

Thermal Properties

Latent Heat of Fusion, J/g 410
280
Maximum Temperature: Mechanical, °C 160
840
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 550
1410
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
23
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.8
7.7
Embodied Carbon, kg CO2/kg material 8.5
4.2
Embodied Energy, MJ/kg 150
62
Embodied Water, L/kg 1160
120

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 19 to 24
26 to 29
Strength to Weight: Bending, points 26 to 31
23 to 25
Thermal Diffusivity, mm2/s 54
6.3
Thermal Shock Resistance, points 8.2 to 10
26 to 29

Alloy Composition

Aluminum (Al), % 91.7 to 96.3
0
Carbon (C), % 0
0.35 to 0.5
Chromium (Cr), % 0 to 0.2
14 to 16.5
Copper (Cu), % 0.2 to 0.7
0
Iron (Fe), % 0 to 0.7
76.7 to 84.6
Magnesium (Mg), % 2.1 to 3.0
0
Manganese (Mn), % 0.6 to 1.4
0 to 1.0
Molybdenum (Mo), % 0
1.0 to 2.5
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0.1 to 0.3
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.8 to 1.5
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0 to 1.5
Zinc (Zn), % 0 to 0.5
0
Residuals, % 0 to 0.15
0

Comparable Variants