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A206.0 Aluminum vs. AISI 303 Stainless Steel

A206.0 aluminum belongs to the aluminum alloys classification, while AISI 303 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 A206.0 aluminum and the bottom bar is AISI 303 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 4.2 to 10
40 to 51
Fatigue Strength, MPa 90 to 180
230 to 360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 260
430 to 470
Tensile Strength: Ultimate (UTS), MPa 390 to 440
600 to 690
Tensile Strength: Yield (Proof), MPa 250 to 380
230 to 420

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 170
930
Melting Completion (Liquidus), °C 670
1450
Melting Onset (Solidus), °C 550
1400
Specific Heat Capacity, J/kg-K 880
480
Thermal Conductivity, W/m-K 130
16
Thermal Expansion, µm/m-K 23
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 30
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 90
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 11
15
Density, g/cm3 3.0
7.8
Embodied Carbon, kg CO2/kg material 8.0
3.0
Embodied Energy, MJ/kg 150
42
Embodied Water, L/kg 1150
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 37
240
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 1000
140 to 440
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
25
Strength to Weight: Axial, points 36 to 41
21 to 25
Strength to Weight: Bending, points 39 to 43
20 to 22
Thermal Diffusivity, mm2/s 48
4.4
Thermal Shock Resistance, points 17 to 19
13 to 15

Alloy Composition

Aluminum (Al), % 93.9 to 95.7
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0
17 to 19
Copper (Cu), % 4.2 to 5.0
0
Iron (Fe), % 0 to 0.1
67.3 to 74.9
Magnesium (Mg), % 0 to 0.15
0
Manganese (Mn), % 0 to 0.2
0 to 2.0
Nickel (Ni), % 0 to 0.050
8.0 to 10
Phosphorus (P), % 0
0 to 0.2
Silicon (Si), % 0 to 0.050
0 to 1.0
Sulfur (S), % 0
0.15 to 0.35
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