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EN 1.4435 Stainless Steel vs. 4047 Aluminum

EN 1.4435 stainless steel belongs to the iron alloys classification, while 4047 aluminum belongs to the aluminum alloys. There are 30 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 1.4435 stainless steel and the bottom bar is 4047 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
72
Elongation at Break, % 43
3.4
Fatigue Strength, MPa 220
45
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
27
Shear Strength, MPa 420
69
Tensile Strength: Ultimate (UTS), MPa 610
120
Tensile Strength: Yield (Proof), MPa 240
64

Thermal Properties

Latent Heat of Fusion, J/g 290
570
Maximum Temperature: Mechanical, °C 980
160
Melting Completion (Liquidus), °C 1440
580
Melting Onset (Solidus), °C 1400
580
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
120

Otherwise Unclassified Properties

Base Metal Price, % relative 21
9.5
Density, g/cm3 7.9
2.5
Embodied Carbon, kg CO2/kg material 4.1
7.7
Embodied Energy, MJ/kg 57
140
Embodied Water, L/kg 160
1050

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 210
3.5
Resilience: Unit (Modulus of Resilience), kJ/m3 150
28
Stiffness to Weight: Axial, points 14
16
Stiffness to Weight: Bending, points 25
55
Strength to Weight: Axial, points 21
13
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 4.0
59
Thermal Shock Resistance, points 14
5.6

Alloy Composition

Aluminum (Al), % 0
85.3 to 89
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 59.8 to 68
0 to 0.8
Magnesium (Mg), % 0
0 to 0.1
Manganese (Mn), % 0 to 2.0
0 to 0.15
Molybdenum (Mo), % 2.5 to 3.0
0
Nickel (Ni), % 12.5 to 15
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
11 to 13
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15