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AISI 420 Stainless Steel vs. 5457 Aluminum

AISI 420 stainless steel belongs to the iron alloys classification, while 5457 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 AISI 420 stainless steel and the bottom bar is 5457 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
32 to 55
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 8.0 to 15
6.0 to 22
Fatigue Strength, MPa 220 to 670
55 to 98
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
26
Shear Strength, MPa 420 to 1010
85 to 130
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
130 to 210
Tensile Strength: Yield (Proof), MPa 380 to 1310
50 to 190

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 620
180
Melting Completion (Liquidus), °C 1510
660
Melting Onset (Solidus), °C 1450
630
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 27
180
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
46
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
150

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.0
8.4
Embodied Energy, MJ/kg 28
160
Embodied Water, L/kg 100
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 88 to 130
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 4410
18 to 250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 25 to 62
13 to 21
Strength to Weight: Bending, points 22 to 41
21 to 28
Thermal Diffusivity, mm2/s 7.3
72
Thermal Shock Resistance, points 25 to 62
5.7 to 9.0

Alloy Composition

Aluminum (Al), % 0
97.8 to 99.05
Carbon (C), % 0.15 to 0.4
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 82.3 to 87.9
0 to 0.1
Magnesium (Mg), % 0
0.8 to 1.2
Manganese (Mn), % 0 to 1.0
0.15 to 0.45
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.080
Sulfur (S), % 0 to 0.030
0
Vanadium (V), % 0
0 to 0.050
Zinc (Zn), % 0
0 to 0.050
Residuals, % 0
0 to 0.1

Comparable Variants