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Grade 20 Titanium vs. ASTM B631 Class A

Grade 20 titanium belongs to the titanium alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 12 material properties with values for both materials. Properties with values for just one material (19, 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 grade 20 titanium and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
220
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 47
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 400
160
Melting Completion (Liquidus), °C 1660
2680 to 2690
Specific Heat Capacity, J/kg-K 520
160
Thermal Expansion, µm/m-K 9.6
11

Otherwise Unclassified Properties

Density, g/cm3 5.0
15
Embodied Carbon, kg CO2/kg material 52
43
Embodied Energy, MJ/kg 860
670

Common Calculations

Stiffness to Weight: Axial, points 14
8.5
Stiffness to Weight: Bending, points 33
14

Comparable Variants