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EN 1.4347 Stainless Steel vs. EN AC-46100 Aluminum

EN 1.4347 stainless steel belongs to the iron alloys classification, while EN AC-46100 aluminum belongs to the aluminum alloys. There are 29 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 1.4347 stainless steel and the bottom bar is EN AC-46100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Elongation at Break, % 23
1.0
Fatigue Strength, MPa 320
110
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
28
Tensile Strength: Ultimate (UTS), MPa 660
270
Tensile Strength: Yield (Proof), MPa 480
160

Thermal Properties

Latent Heat of Fusion, J/g 300
550
Maximum Temperature: Mechanical, °C 1100
180
Melting Completion (Liquidus), °C 1410
600
Melting Onset (Solidus), °C 1370
540
Specific Heat Capacity, J/kg-K 490
890
Thermal Conductivity, W/m-K 15
110
Thermal Expansion, µm/m-K 13
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
28
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
90

Otherwise Unclassified Properties

Base Metal Price, % relative 16
10
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 3.1
7.6
Embodied Energy, MJ/kg 44
140
Embodied Water, L/kg 170
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 570
170
Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 24
27
Strength to Weight: Bending, points 22
34
Thermal Diffusivity, mm2/s 4.0
44
Thermal Shock Resistance, points 19
12

Alloy Composition

Aluminum (Al), % 0
80.4 to 88.5
Carbon (C), % 0 to 0.050
0
Chromium (Cr), % 25 to 27
0 to 0.15
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 62.2 to 69.4
0 to 1.1
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0
0 to 0.3
Manganese (Mn), % 0 to 1.5
0 to 0.55
Nickel (Ni), % 5.5 to 7.5
0 to 0.45
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.5
10 to 12
Sulfur (S), % 0 to 0.020
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.7
Residuals, % 0
0 to 0.25