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EN 1.4401 Stainless Steel vs. EN AC-47000 Aluminum

EN 1.4401 stainless steel belongs to the iron alloys classification, while EN AC-47000 aluminum belongs to the aluminum 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 1.4401 stainless steel and the bottom bar is EN AC-47000 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
60
Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 14 to 40
1.7
Fatigue Strength, MPa 200 to 320
68
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
27
Tensile Strength: Ultimate (UTS), MPa 600 to 900
180
Tensile Strength: Yield (Proof), MPa 230 to 570
97

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Maximum Temperature: Mechanical, °C 950
170
Melting Completion (Liquidus), °C 1440
590
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 15
130
Thermal Expansion, µm/m-K 16
21

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 19
9.5
Density, g/cm3 7.9
2.6
Embodied Carbon, kg CO2/kg material 3.8
7.7
Embodied Energy, MJ/kg 52
140
Embodied Water, L/kg 150
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
2.5
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 800
65
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
54
Strength to Weight: Axial, points 21 to 32
19
Strength to Weight: Bending, points 20 to 26
27
Thermal Diffusivity, mm2/s 4.0
55
Thermal Shock Resistance, points 13 to 20
8.3

Alloy Composition

Aluminum (Al), % 0
82.1 to 89.5
Carbon (C), % 0 to 0.070
0
Chromium (Cr), % 16.5 to 18.5
0 to 0.1
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 62.8 to 71.5
0 to 0.8
Lead (Pb), % 0
0 to 0.2
Magnesium (Mg), % 0
0 to 0.35
Manganese (Mn), % 0 to 2.0
0.050 to 0.55
Molybdenum (Mo), % 2.0 to 2.5
0
Nickel (Ni), % 10 to 13
0 to 0.3
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
10.5 to 13.5
Sulfur (S), % 0 to 0.015
0
Tin (Sn), % 0
0 to 0.1
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.55
Residuals, % 0
0 to 0.25