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EN AC-46400 Aluminum vs. EN 1.4449 Stainless Steel

EN AC-46400 aluminum belongs to the aluminum alloys classification, while EN 1.4449 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 EN AC-46400 aluminum and the bottom bar is EN 1.4449 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 77 to 120
190
Elastic (Young's, Tensile) Modulus, GPa 72
200
Elongation at Break, % 1.1 to 1.7
48
Fatigue Strength, MPa 75 to 85
240
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 27
78
Tensile Strength: Ultimate (UTS), MPa 170 to 310
620
Tensile Strength: Yield (Proof), MPa 110 to 270
250

Thermal Properties

Latent Heat of Fusion, J/g 520
290
Maximum Temperature: Mechanical, °C 170
960
Melting Completion (Liquidus), °C 610
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 130
15
Thermal Expansion, µm/m-K 22
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
19
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 7.8
3.9
Embodied Energy, MJ/kg 150
54
Embodied Water, L/kg 1070
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 1.7 to 4.9
240
Resilience: Unit (Modulus of Resilience), kJ/m3 82 to 500
160
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 18 to 32
22
Strength to Weight: Bending, points 26 to 38
20
Thermal Diffusivity, mm2/s 55
4.0
Thermal Shock Resistance, points 7.8 to 14
14

Alloy Composition

Aluminum (Al), % 85.4 to 90.5
0
Carbon (C), % 0
0 to 0.035
Chromium (Cr), % 0
17 to 18.2
Copper (Cu), % 0.8 to 1.3
0 to 1.0
Iron (Fe), % 0 to 0.8
62.4 to 69.3
Lead (Pb), % 0 to 0.1
0
Magnesium (Mg), % 0.25 to 0.65
0
Manganese (Mn), % 0.15 to 0.55
0 to 2.0
Molybdenum (Mo), % 0
2.3 to 2.8
Nickel (Ni), % 0 to 0.2
11.5 to 12.5
Nitrogen (N), % 0
0 to 0.080
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 8.3 to 9.7
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.1
0
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.8
0
Residuals, % 0 to 0.25
0