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EN 1.4618 Stainless Steel vs. 518.0 Aluminum

EN 1.4618 stainless steel belongs to the iron alloys classification, while 518.0 aluminum belongs to the aluminum alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 1.4618 stainless steel and the bottom bar is 518.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 210
80
Elastic (Young's, Tensile) Modulus, GPa 200
67
Elongation at Break, % 51
5.0
Fatigue Strength, MPa 240 to 250
140
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
25
Shear Strength, MPa 480 to 500
200
Tensile Strength: Ultimate (UTS), MPa 680 to 700
310
Tensile Strength: Yield (Proof), MPa 250 to 260
190

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 900
170
Melting Completion (Liquidus), °C 1400
620
Melting Onset (Solidus), °C 1360
560
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 15
98
Thermal Expansion, µm/m-K 16
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
81

Otherwise Unclassified Properties

Base Metal Price, % relative 13
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.7
9.4
Embodied Energy, MJ/kg 39
150
Embodied Water, L/kg 150
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 280
14
Resilience: Unit (Modulus of Resilience), kJ/m3 160 to 170
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 24 to 25
32
Strength to Weight: Bending, points 22 to 23
38
Thermal Diffusivity, mm2/s 4.0
40
Thermal Shock Resistance, points 15 to 16
14

Alloy Composition

Aluminum (Al), % 0
88.1 to 92.5
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 16.5 to 18.5
0
Copper (Cu), % 1.0 to 2.5
0 to 0.25
Iron (Fe), % 62.7 to 72.5
0 to 1.8
Magnesium (Mg), % 0
7.5 to 8.5
Manganese (Mn), % 5.5 to 9.5
0 to 0.35
Nickel (Ni), % 4.5 to 5.5
0 to 0.15
Nitrogen (N), % 0 to 0.15
0
Phosphorus (P), % 0 to 0.070
0
Silicon (Si), % 0 to 1.0
0 to 0.35
Sulfur (S), % 0 to 0.010
0
Tin (Sn), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.25