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5454 Aluminum vs. AISI 418 Stainless Steel

5454 aluminum belongs to the aluminum alloys classification, while AISI 418 stainless steel belongs to the iron 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 5454 aluminum and the bottom bar is AISI 418 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61 to 93
330
Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 2.3 to 18
17
Fatigue Strength, MPa 83 to 160
520
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 140 to 200
680
Tensile Strength: Ultimate (UTS), MPa 230 to 350
1100
Tensile Strength: Yield (Proof), MPa 97 to 290
850

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
770
Melting Completion (Liquidus), °C 650
1500
Melting Onset (Solidus), °C 600
1460
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
25
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.1

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
15
Density, g/cm3 2.7
8.0
Embodied Carbon, kg CO2/kg material 8.6
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1180
110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3 to 34
170
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 590
1830
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 23 to 36
38
Strength to Weight: Bending, points 30 to 41
29
Thermal Diffusivity, mm2/s 55
6.7
Thermal Shock Resistance, points 10 to 16
40

Alloy Composition

Aluminum (Al), % 94.5 to 97.1
0
Carbon (C), % 0
0.15 to 0.2
Chromium (Cr), % 0.050 to 0.2
12 to 14
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
78.5 to 83.6
Magnesium (Mg), % 2.4 to 3.0
0
Manganese (Mn), % 0.5 to 1.0
0 to 0.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
1.8 to 2.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Tungsten (W), % 0
2.5 to 3.5
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0