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EN 1.4530 Stainless Steel vs. 2018 Aluminum

EN 1.4530 stainless steel belongs to the iron alloys classification, while 2018 aluminum belongs to the aluminum alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, 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 1.4530 stainless steel and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
73
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
27
Tensile Strength: Ultimate (UTS), MPa 1030 to 1370
420

Thermal Properties

Latent Heat of Fusion, J/g 270
390
Maximum Temperature: Mechanical, °C 790
220
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Expansion, µm/m-K 11
22

Otherwise Unclassified Properties

Base Metal Price, % relative 15
11
Density, g/cm3 7.9
3.1
Embodied Carbon, kg CO2/kg material 3.4
8.1
Embodied Energy, MJ/kg 46
150
Embodied Water, L/kg 130
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
45
Strength to Weight: Axial, points 36 to 48
38
Strength to Weight: Bending, points 29 to 35
41
Thermal Shock Resistance, points 35 to 47
19

Alloy Composition

Aluminum (Al), % 0.6 to 0.8
89.7 to 94.4
Carbon (C), % 0 to 0.015
0
Chromium (Cr), % 11.5 to 12.5
0 to 0.1
Copper (Cu), % 0
3.5 to 4.5
Iron (Fe), % 74.4 to 77.3
0 to 1.0
Magnesium (Mg), % 0
0.45 to 0.9
Manganese (Mn), % 0 to 0.1
0 to 0.2
Molybdenum (Mo), % 1.9 to 2.2
0
Nickel (Ni), % 8.5 to 9.5
1.7 to 2.3
Nitrogen (N), % 0 to 0.010
0
Phosphorus (P), % 0 to 0.010
0
Silicon (Si), % 0 to 0.1
0 to 0.9
Sulfur (S), % 0 to 0.0050
0
Titanium (Ti), % 0.28 to 0.37
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15