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ASTM B631 Class B vs. 2219 Aluminum

ASTM B631 class B belongs to the otherwise unclassified metals classification, while 2219 aluminum belongs to the aluminum alloys. There are 16 material properties with values for both materials. Properties with values for just one material (15, 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 B631 class B and the bottom bar is 2219 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
72
Poisson's Ratio 0.31
0.33
Shear Modulus, GPa 78 to 79
27

Thermal Properties

Latent Heat of Fusion, J/g 150
390
Melting Completion (Liquidus), °C 2460 to 2480
640
Specific Heat Capacity, J/kg-K 170
870
Thermal Conductivity, W/m-K 450
110 to 170
Thermal Expansion, µm/m-K 12
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
28 to 44
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
81 to 130

Otherwise Unclassified Properties

Density, g/cm3 14
3.1
Embodied Carbon, kg CO2/kg material 49
8.2
Embodied Energy, MJ/kg 760
150

Common Calculations

Stiffness to Weight: Axial, points 8.1
13
Stiffness to Weight: Bending, points 14
44
Thermal Diffusivity, mm2/s 190
42 to 63