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EN 1.4347 Stainless Steel vs. 355.0 Aluminum

EN 1.4347 stainless steel belongs to the iron alloys classification, while 355.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (6, 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 1.4347 stainless steel and the bottom bar is 355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 23
1.5 to 2.6
Fatigue Strength, MPa 320
55 to 70
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 660
200 to 260
Tensile Strength: Yield (Proof), MPa 480
150 to 190

Thermal Properties

Latent Heat of Fusion, J/g 300
470
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1410
620
Melting Onset (Solidus), °C 1370
560
Specific Heat Capacity, J/kg-K 490
890
Thermal Conductivity, W/m-K 15
150 to 170
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
38 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
120 to 140

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.1
8.0
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 170
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
2.7 to 5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 570
150 to 250
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 24
20 to 27
Strength to Weight: Bending, points 22
28 to 33
Thermal Diffusivity, mm2/s 4.0
60 to 69
Thermal Shock Resistance, points 19
9.1 to 12

Alloy Composition

Aluminum (Al), % 0
90.3 to 94.1
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 25 to 27
0 to 0.25
Copper (Cu), % 0
1.0 to 1.5
Iron (Fe), % 62.2 to 69.4
0 to 0.6
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0 to 1.5
0 to 0.5
Nickel (Ni), % 5.5 to 7.5
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
4.5 to 5.5
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15