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ASTM A209 Steel vs. 201.0 Aluminum

ASTM A209 steel belongs to the iron alloys classification, while 201.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 ASTM A209 steel and the bottom bar is 201.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 150
95 to 140
Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 34
4.4 to 20
Fatigue Strength, MPa 180 to 200
120 to 150
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Shear Strength, MPa 280 to 310
290
Tensile Strength: Ultimate (UTS), MPa 420 to 460
370 to 470
Tensile Strength: Yield (Proof), MPa 220 to 250
220 to 400

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Maximum Temperature: Mechanical, °C 410
170
Melting Completion (Liquidus), °C 1470
650
Melting Onset (Solidus), °C 1420 to 1430
570
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 50
120
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
30 to 33
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
87 to 97

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
38
Density, g/cm3 7.9
3.1
Embodied Carbon, kg CO2/kg material 1.5
8.7
Embodied Energy, MJ/kg 20
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 130
19 to 63
Resilience: Unit (Modulus of Resilience), kJ/m3 130 to 170
330 to 1160
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 15 to 16
33 to 42
Strength to Weight: Bending, points 16 to 17
37 to 44
Thermal Diffusivity, mm2/s 13
45
Thermal Shock Resistance, points 12 to 14
19 to 25