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AISI 440A Stainless Steel vs. B535.0 Aluminum

AISI 440A stainless steel belongs to the iron alloys classification, while B535.0 aluminum belongs to the aluminum alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, 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 440A stainless steel and the bottom bar is B535.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
66
Elongation at Break, % 5.0 to 20
10
Fatigue Strength, MPa 270 to 790
62
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
25
Shear Strength, MPa 450 to 1040
210
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
260
Tensile Strength: Yield (Proof), MPa 420 to 1650
130

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Mechanical, °C 760
170
Melting Completion (Liquidus), °C 1480
630
Melting Onset (Solidus), °C 1370
550
Specific Heat Capacity, J/kg-K 480
910
Thermal Conductivity, W/m-K 23
96
Thermal Expansion, µm/m-K 10
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
24
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
82

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
9.5
Density, g/cm3 7.7
2.6
Embodied Carbon, kg CO2/kg material 2.2
9.4
Embodied Energy, MJ/kg 31
160
Embodied Water, L/kg 120
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
51
Strength to Weight: Axial, points 26 to 65
28
Strength to Weight: Bending, points 23 to 43
35
Thermal Diffusivity, mm2/s 6.2
40
Thermal Shock Resistance, points 26 to 65
11

Alloy Composition

Aluminum (Al), % 0
91.7 to 93.4
Carbon (C), % 0.6 to 0.75
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 78.4 to 83.4
0 to 0.15
Magnesium (Mg), % 0
6.5 to 7.5
Manganese (Mn), % 0 to 1.0
0 to 0.050
Molybdenum (Mo), % 0 to 0.75
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.15
Sulfur (S), % 0 to 0.015
0
Titanium (Ti), % 0
0.1 to 0.25
Residuals, % 0
0 to 0.15