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A242.0 Aluminum vs. EN 1.4008 Stainless Steel

A242.0 aluminum belongs to the aluminum alloys classification, while EN 1.4008 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 A242.0 aluminum and the bottom bar is EN 1.4008 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
190
Elongation at Break, % 1.6
17
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
76
Tensile Strength: Ultimate (UTS), MPa 220
670

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 210
760
Melting Completion (Liquidus), °C 680
1450
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 870
480
Thermal Conductivity, W/m-K 140
25
Thermal Expansion, µm/m-K 23
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
8.0
Density, g/cm3 3.1
7.8
Embodied Carbon, kg CO2/kg material 8.3
2.1
Embodied Energy, MJ/kg 150
30
Embodied Water, L/kg 1130
100

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
25
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 52
6.7
Thermal Shock Resistance, points 9.3
23

Alloy Composition

Aluminum (Al), % 89.3 to 93.1
0
Carbon (C), % 0
0 to 0.1
Chromium (Cr), % 0.15 to 0.25
12 to 13.5
Copper (Cu), % 3.7 to 4.5
0
Iron (Fe), % 0 to 0.8
81.8 to 86.8
Magnesium (Mg), % 1.2 to 1.7
0
Manganese (Mn), % 0 to 0.1
0 to 1.0
Molybdenum (Mo), % 0
0.2 to 0.5
Nickel (Ni), % 1.8 to 2.3
1.0 to 2.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 1.0
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0.070 to 0.2
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0