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ASTM B631 Class A vs. Grade C-6 Titanium

ASTM B631 class A belongs to the otherwise unclassified metals classification, while grade C-6 titanium belongs to the titanium alloys. There are 16 material properties with values for both materials. Properties with values for just one material (16, 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 A and the bottom bar is grade C-6 titanium.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
100
Poisson's Ratio 0.3
0.32
Shear Modulus, GPa 85 to 86
39

Thermal Properties

Latent Heat of Fusion, J/g 160
410
Melting Completion (Liquidus), °C 2680 to 2690
1580
Specific Heat Capacity, J/kg-K 160
550
Thermal Conductivity, W/m-K 420
7.8
Thermal Expansion, µm/m-K 11
9.8

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
1.2
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
2.5

Otherwise Unclassified Properties

Density, g/cm3 15
4.5
Embodied Carbon, kg CO2/kg material 43
30
Embodied Energy, MJ/kg 670
480

Common Calculations

Stiffness to Weight: Axial, points 8.5
13
Stiffness to Weight: Bending, points 14
35
Thermal Diffusivity, mm2/s 180
3.2