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EN 1.4821 Stainless Steel vs. 515.0 Aluminum

EN 1.4821 stainless steel belongs to the iron alloys classification, while 515.0 aluminum belongs to the aluminum alloys. There are 23 material properties with values for both materials. Properties with values for just one material (10, 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 1.4821 stainless steel and the bottom bar is 515.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 18
10
Fatigue Strength, MPa 280
130
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 79
26
Shear Strength, MPa 450
190
Tensile Strength: Ultimate (UTS), MPa 730
280

Thermal Properties

Latent Heat of Fusion, J/g 310
470
Maximum Temperature: Mechanical, °C 1100
170
Melting Completion (Liquidus), °C 1410
620
Melting Onset (Solidus), °C 1370
620
Specific Heat Capacity, J/kg-K 490
900
Thermal Expansion, µm/m-K 12
23

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.6
2.6
Embodied Carbon, kg CO2/kg material 2.9
8.4
Embodied Energy, MJ/kg 41
150
Embodied Water, L/kg 160
1120

Common Calculations

Stiffness to Weight: Axial, points 15
15
Stiffness to Weight: Bending, points 26
52
Strength to Weight: Axial, points 26
30
Strength to Weight: Bending, points 23
36
Thermal Shock Resistance, points 21
13

Alloy Composition

Aluminum (Al), % 0
93.6 to 96.6
Carbon (C), % 0.1 to 0.2
0
Chromium (Cr), % 24.5 to 26.5
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 64.2 to 71.1
0 to 1.3
Magnesium (Mg), % 0
2.5 to 4.0
Manganese (Mn), % 0 to 2.0
0.4 to 0.6
Nickel (Ni), % 3.5 to 5.5
0
Nitrogen (N), % 0 to 0.1
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.8 to 1.5
0.5 to 10
Sulfur (S), % 0 to 0.015
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15