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EN 1.4401 Stainless Steel vs. 443.0 Aluminum

EN 1.4401 stainless steel belongs to the iron alloys classification, while 443.0 aluminum belongs to the aluminum alloys. There are 31 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 1.4401 stainless steel and the bottom bar is 443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
41
Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 14 to 40
5.6
Fatigue Strength, MPa 200 to 320
55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
27
Shear Strength, MPa 410 to 550
96
Tensile Strength: Ultimate (UTS), MPa 600 to 900
150
Tensile Strength: Yield (Proof), MPa 230 to 570
65

Thermal Properties

Latent Heat of Fusion, J/g 290
470
Maximum Temperature: Mechanical, °C 950
180
Melting Completion (Liquidus), °C 1440
630
Melting Onset (Solidus), °C 1400
580
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 15
150
Thermal Expansion, µm/m-K 16
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
38
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
130

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.9
2.7
Embodied Carbon, kg CO2/kg material 3.8
8.0
Embodied Energy, MJ/kg 52
150
Embodied Water, L/kg 150
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
30
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
52
Strength to Weight: Axial, points 21 to 32
16
Strength to Weight: Bending, points 20 to 26
23
Thermal Diffusivity, mm2/s 4.0
61
Thermal Shock Resistance, points 13 to 20
6.9

Alloy Composition

Aluminum (Al), % 0
90.7 to 95.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 16.5 to 18.5
0 to 0.25
Copper (Cu), % 0
0 to 0.6
Iron (Fe), % 62.8 to 71.5
0 to 0.8
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 0.5
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
4.5 to 6.0
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.35