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444.0 Aluminum vs. EN 1.4439 Stainless Steel

444.0 aluminum belongs to the aluminum alloys classification, while EN 1.4439 stainless steel belongs to the iron alloys. There are 30 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 444.0 aluminum and the bottom bar is EN 1.4439 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 50
220
Elastic (Young's, Tensile) Modulus, GPa 71
200
Elongation at Break, % 25
40
Fatigue Strength, MPa 51
270
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
79
Tensile Strength: Ultimate (UTS), MPa 190
680
Tensile Strength: Yield (Proof), MPa 83
310

Thermal Properties

Latent Heat of Fusion, J/g 500
290
Maximum Temperature: Mechanical, °C 170
980
Melting Completion (Liquidus), °C 610
1460
Melting Onset (Solidus), °C 600
1410
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
14
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
22
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 7.9
4.5
Embodied Energy, MJ/kg 150
61
Embodied Water, L/kg 1110
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
220
Resilience: Unit (Modulus of Resilience), kJ/m3 49
240
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
25
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 28
22
Thermal Diffusivity, mm2/s 67
3.8
Thermal Shock Resistance, points 8.8
15

Alloy Composition

Aluminum (Al), % 90.5 to 93.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
16.5 to 18.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.6
58.7 to 66.9
Magnesium (Mg), % 0 to 0.1
0
Manganese (Mn), % 0 to 0.35
0 to 2.0
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
12.5 to 14.5
Nitrogen (N), % 0
0.12 to 0.22
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 6.5 to 7.5
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0 to 0.15
0