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ASTM B631 Class C vs. Grade 5 Titanium

ASTM B631 class C belongs to the otherwise unclassified metals classification, while grade 5 titanium belongs to the titanium alloys. 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 ASTM B631 class C and the bottom bar is grade 5 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180 to 190
110
Poisson's Ratio 0.32
0.32
Shear Modulus, GPa 66 to 71
40

Thermal Properties

Latent Heat of Fusion, J/g 140 to 150
410
Melting Completion (Liquidus), °C 2090 to 2230
1610
Specific Heat Capacity, J/kg-K 180
560
Thermal Conductivity, W/m-K 450 to 490
6.8
Thermal Expansion, µm/m-K 14
8.9

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55 to 63
1.0
Electrical Conductivity: Equal Weight (Specific), % IACS 36 to 43
2.0

Otherwise Unclassified Properties

Density, g/cm3 13 to 14
4.4
Embodied Carbon, kg CO2/kg material 55 to 59
38
Embodied Energy, MJ/kg 860 to 920
610

Common Calculations

Stiffness to Weight: Axial, points 7.4 to 7.6
13
Stiffness to Weight: Bending, points 14
35
Thermal Diffusivity, mm2/s 180 to 200
2.7