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EN 1.4005 Stainless Steel vs. 4004 Aluminum

EN 1.4005 stainless steel belongs to the iron alloys classification, while 4004 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4005 stainless steel and the bottom bar is 4004 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 13 to 21
2.4
Fatigue Strength, MPa 240 to 290
42
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Shear Strength, MPa 390 to 450
63
Tensile Strength: Ultimate (UTS), MPa 630 to 750
110
Tensile Strength: Yield (Proof), MPa 370 to 500
60

Thermal Properties

Latent Heat of Fusion, J/g 270
540
Maximum Temperature: Mechanical, °C 760
160
Melting Completion (Liquidus), °C 1440
600
Melting Onset (Solidus), °C 1400
560
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 30
130
Thermal Expansion, µm/m-K 10
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
33
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
120

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.0
8.0
Embodied Energy, MJ/kg 28
150
Embodied Water, L/kg 100
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 90 to 110
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 650
25
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
54
Strength to Weight: Axial, points 23 to 27
12
Strength to Weight: Bending, points 21 to 24
20
Thermal Diffusivity, mm2/s 8.1
58
Thermal Shock Resistance, points 23 to 27
5.1

Alloy Composition

Aluminum (Al), % 0
86 to 90
Carbon (C), % 0.060 to 0.15
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 82.4 to 87.8
0 to 0.8
Magnesium (Mg), % 0
1.0 to 2.0
Manganese (Mn), % 0 to 1.5
0 to 0.1
Molybdenum (Mo), % 0 to 0.6
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
9.0 to 10.5
Sulfur (S), % 0.15 to 0.35
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15