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EN 1.4415 Stainless Steel vs. EN AC-21000 Aluminum

EN 1.4415 stainless steel belongs to the iron alloys classification, while EN AC-21000 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1.4415 stainless steel and the bottom bar is EN AC-21000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 17 to 20
6.7
Fatigue Strength, MPa 470 to 510
100
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Tensile Strength: Ultimate (UTS), MPa 830 to 930
340
Tensile Strength: Yield (Proof), MPa 730 to 840
240

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 790
170
Melting Completion (Liquidus), °C 1460
670
Melting Onset (Solidus), °C 1420
550
Specific Heat Capacity, J/kg-K 470
880
Thermal Conductivity, W/m-K 19
130
Thermal Expansion, µm/m-K 9.9
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
34
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
100

Otherwise Unclassified Properties

Base Metal Price, % relative 13
11
Density, g/cm3 7.9
3.0
Embodied Carbon, kg CO2/kg material 3.6
8.0
Embodied Energy, MJ/kg 51
150
Embodied Water, L/kg 120
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 160
21
Resilience: Unit (Modulus of Resilience), kJ/m3 1350 to 1790
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
46
Strength to Weight: Axial, points 29 to 33
32
Strength to Weight: Bending, points 25 to 27
36
Thermal Diffusivity, mm2/s 5.1
49
Thermal Shock Resistance, points 30 to 34
15

Alloy Composition

Aluminum (Al), % 0
93.4 to 95.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 11.5 to 13.5
0
Copper (Cu), % 0
4.2 to 5.0
Iron (Fe), % 75.9 to 82.4
0 to 0.35
Lead (Pb), % 0
0 to 0.050
Magnesium (Mg), % 0
0.15 to 0.35
Manganese (Mn), % 0 to 0.5
0 to 0.1
Molybdenum (Mo), % 1.5 to 2.5
0
Nickel (Ni), % 4.5 to 6.5
0 to 0.050
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 0.5
0 to 0.2
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.010
0.15 to 0.3
Vanadium (V), % 0.1 to 0.5
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.1