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EN 1.4008 Stainless Steel vs. 242.0 Aluminum

EN 1.4008 stainless steel belongs to the iron alloys classification, while 242.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 1.4008 stainless steel and the bottom bar is 242.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 17
0.5 to 1.5
Fatigue Strength, MPa 300
55 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 670
180 to 290
Tensile Strength: Yield (Proof), MPa 500
120 to 220

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 760
210
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
530
Specific Heat Capacity, J/kg-K 480
870
Thermal Conductivity, W/m-K 25
130 to 170
Thermal Expansion, µm/m-K 11
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
33 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
96 to 130

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
1.3 to 3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 630
110 to 340
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 24
16 to 26
Strength to Weight: Bending, points 22
23 to 32
Thermal Diffusivity, mm2/s 6.7
50 to 62
Thermal Shock Resistance, points 23
8.0 to 13

Alloy Composition

Aluminum (Al), % 0
88.4 to 93.6
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 12 to 13.5
0 to 0.25
Copper (Cu), % 0
3.5 to 4.5
Iron (Fe), % 81.8 to 86.8
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0 to 1.0
0 to 0.35
Molybdenum (Mo), % 0.2 to 0.5
0
Nickel (Ni), % 1.0 to 2.0
1.7 to 2.3
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15