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EN 1.4521 Stainless Steel vs. 6110 Aluminum

EN 1.4521 stainless steel belongs to the iron alloys classification, while 6110 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 1.4521 stainless steel and the bottom bar is 6110 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 23
2.2
Fatigue Strength, MPa 230
120
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 78
26
Shear Strength, MPa 330
290
Tensile Strength: Ultimate (UTS), MPa 520
500
Tensile Strength: Yield (Proof), MPa 340
500

Thermal Properties

Latent Heat of Fusion, J/g 290
410
Maximum Temperature: Mechanical, °C 930
170
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
600
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 23
170
Thermal Expansion, µm/m-K 10
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
42
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
140

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 7.7
2.8
Embodied Carbon, kg CO2/kg material 2.8
8.2
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 130
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
11
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1770
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 19
51
Strength to Weight: Bending, points 19
51
Thermal Diffusivity, mm2/s 6.2
67
Thermal Shock Resistance, points 18
22

Alloy Composition

Aluminum (Al), % 0
94.4 to 98.4
Carbon (C), % 0 to 0.025
0
Chromium (Cr), % 17 to 20
0.040 to 0.25
Copper (Cu), % 0
0.2 to 0.7
Iron (Fe), % 74.6 to 81.1
0 to 0.8
Magnesium (Mg), % 0
0.5 to 1.1
Manganese (Mn), % 0 to 1.0
0.2 to 0.7
Molybdenum (Mo), % 1.8 to 2.5
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0.7 to 1.5
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0.15 to 0.8
0 to 0.15
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15