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Grade 5 Titanium vs. ASTM B631 Class A

Grade 5 titanium belongs to the titanium alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (17, 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 5 titanium and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
220
Poisson's Ratio 0.32
0.3
Shear Modulus, GPa 40
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 410
160
Melting Completion (Liquidus), °C 1610
2680 to 2690
Specific Heat Capacity, J/kg-K 560
160
Thermal Conductivity, W/m-K 6.8
420
Thermal Expansion, µm/m-K 8.9
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.0
40 to 47
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
25 to 29

Otherwise Unclassified Properties

Density, g/cm3 4.4
15
Embodied Carbon, kg CO2/kg material 38
43
Embodied Energy, MJ/kg 610
670

Common Calculations

Stiffness to Weight: Axial, points 13
8.5
Stiffness to Weight: Bending, points 35
14
Thermal Diffusivity, mm2/s 2.7
180