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AISI 420 Stainless Steel vs. 5252 Aluminum

AISI 420 stainless steel belongs to the iron alloys classification, while 5252 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 5252 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
68 to 75
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 8.0 to 15
4.5 to 11
Fatigue Strength, MPa 220 to 670
100 to 110
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 76
25
Shear Strength, MPa 420 to 1010
140 to 160
Tensile Strength: Ultimate (UTS), MPa 690 to 1720
230 to 290
Tensile Strength: Yield (Proof), MPa 380 to 1310
170 to 240

Thermal Properties

Latent Heat of Fusion, J/g 280
400
Maximum Temperature: Mechanical, °C 620
180
Melting Completion (Liquidus), °C 1510
650
Melting Onset (Solidus), °C 1450
610
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 27
140
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
34
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
120

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
8.7
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
210 to 430
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 25 to 62
23 to 30
Strength to Weight: Bending, points 22 to 41
31 to 36
Thermal Diffusivity, mm2/s 7.3
57
Thermal Shock Resistance, points 25 to 62
10 to 13

Alloy Composition

Aluminum (Al), % 0
96.6 to 97.8
Carbon (C), % 0.15 to 0.4
0
Chromium (Cr), % 12 to 14
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 82.3 to 87.9
0 to 0.1
Magnesium (Mg), % 0
2.2 to 2.8
Manganese (Mn), % 0 to 1.0
0 to 0.1
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