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A206.0 Aluminum vs. AISI 440B Stainless Steel

A206.0 aluminum belongs to the aluminum alloys classification, while AISI 440B stainless steel belongs to the iron 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 A206.0 aluminum and the bottom bar is AISI 440B stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.2 to 10
3.0 to 18
Fatigue Strength, MPa 90 to 180
260 to 850
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 260
460 to 1110
Tensile Strength: Ultimate (UTS), MPa 390 to 440
740 to 1930
Tensile Strength: Yield (Proof), MPa 250 to 380
430 to 1860

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 170
870
Melting Completion (Liquidus), °C 670
1480
Melting Onset (Solidus), °C 550
1370
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
23
Thermal Expansion, µm/m-K 23
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 3.0
7.7
Embodied Carbon, kg CO2/kg material 8.0
2.2
Embodied Energy, MJ/kg 150
31
Embodied Water, L/kg 1150
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 37
57 to 110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 36 to 41
27 to 70
Strength to Weight: Bending, points 39 to 43
24 to 45
Thermal Diffusivity, mm2/s 48
6.1
Thermal Shock Resistance, points 17 to 19
27 to 70

Alloy Composition

Aluminum (Al), % 93.9 to 95.7
0
Carbon (C), % 0
0.75 to 1.0
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 4.2 to 5.0
0
Iron (Fe), % 0 to 0.1
78.2 to 83.3
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.2
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Nickel (Ni), % 0 to 0.050
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 0 to 0.050
0
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.1
0
Residuals, % 0 to 0.15
0