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EN 1.4658 Stainless Steel vs. 201.0 Aluminum

EN 1.4658 stainless steel belongs to the iron alloys classification, while 201.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, 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 1.4658 stainless steel and the bottom bar is 201.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
95 to 140
Elastic (Young's, Tensile) Modulus, GPa 210
71
Elongation at Break, % 28
4.4 to 20
Fatigue Strength, MPa 530
120 to 150
Impact Strength: V-Notched Charpy, J 110
10 to 22
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 81
27
Shear Strength, MPa 580
290
Tensile Strength: Ultimate (UTS), MPa 900
370 to 470
Tensile Strength: Yield (Proof), MPa 730
220 to 400

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1450
650
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 16
120
Thermal Expansion, µm/m-K 13
19

Otherwise Unclassified Properties

Base Metal Price, % relative 25
38
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 4.5
8.7
Embodied Energy, MJ/kg 61
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
19 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
330 to 1160
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 32
33 to 42
Strength to Weight: Bending, points 26
37 to 44
Thermal Diffusivity, mm2/s 4.3
45
Thermal Shock Resistance, points 24
19 to 25

Alloy Composition

Aluminum (Al), % 0
92.1 to 95.1
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 26 to 29
0
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
4.0 to 5.2
Iron (Fe), % 50.9 to 63.7
0 to 0.15
Magnesium (Mg), % 0
0.15 to 0.55
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0
Nitrogen (N), % 0.3 to 0.5
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 0.5
0 to 0.1
Silver (Ag), % 0
0.4 to 1.0
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0
0.15 to 0.35
Residuals, % 0
0 to 0.1