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EN 1.4347 Stainless Steel vs. 444.0 Aluminum

EN 1.4347 stainless steel belongs to the iron alloys classification, while 444.0 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 1.4347 stainless steel and the bottom bar is 444.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 23
25
Fatigue Strength, MPa 320
51
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
27
Tensile Strength: Ultimate (UTS), MPa 660
190
Tensile Strength: Yield (Proof), MPa 480
83

Thermal Properties

Latent Heat of Fusion, J/g 300
500
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1410
610
Melting Onset (Solidus), °C 1370
600
Specific Heat Capacity, J/kg-K 490
900
Thermal Conductivity, W/m-K 15
160
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
40
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
140

Otherwise Unclassified Properties

Base Metal Price, % relative 16
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 3.1
7.9
Embodied Energy, MJ/kg 44
150
Embodied Water, L/kg 170
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
39
Resilience: Unit (Modulus of Resilience), kJ/m3 570
49
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
53
Strength to Weight: Axial, points 24
20
Strength to Weight: Bending, points 22
28
Thermal Diffusivity, mm2/s 4.0
67
Thermal Shock Resistance, points 19
8.8

Alloy Composition

Aluminum (Al), % 0
90.5 to 93.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 25 to 27
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 62.2 to 69.4
0 to 0.6
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 1.5
0 to 0.35
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
6.5 to 7.5
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