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EN 1.4309 Stainless Steel vs. 354.0 Aluminum

EN 1.4309 stainless steel belongs to the iron alloys classification, while 354.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 1.4309 stainless steel and the bottom bar is 354.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 34
2.4 to 3.0
Fatigue Strength, MPa 170
92 to 120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 490
360 to 380
Tensile Strength: Yield (Proof), MPa 210
280 to 310

Thermal Properties

Latent Heat of Fusion, J/g 290
530
Maximum Temperature: Mechanical, °C 960
170
Melting Completion (Liquidus), °C 1420
600
Melting Onset (Solidus), °C 1380
550
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 17
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
32
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
110

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.1
7.8
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 150
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
8.6 to 9.8
Resilience: Unit (Modulus of Resilience), kJ/m3 110
540 to 670
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 18
37 to 39
Strength to Weight: Bending, points 18
42 to 44
Thermal Diffusivity, mm2/s 4.1
52
Thermal Shock Resistance, points 11
17 to 18

Alloy Composition

Aluminum (Al), % 0
87.3 to 89.4
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 18 to 20
0
Copper (Cu), % 0
1.6 to 2.0
Iron (Fe), % 64.2 to 73
0 to 0.2
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0 to 2.0
0 to 0.1
Nickel (Ni), % 9.0 to 12
0
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
8.6 to 9.4
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15