ASTM B631 Class A vs. Type 2 Niobium
Both ASTM B631 class A and Type 2 niobium are otherwise unclassified metals. There are 11 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.
For each property being compared, the top bar is ASTM B631 class A and the bottom bar is Type 2 niobium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 110 |
| Poisson's Ratio | 0.3 | |
| 0.4 |
| Shear Modulus, GPa | 85 to 86 | |
| 38 |
Thermal Properties
| Latent Heat of Fusion, J/g | 160 | |
| 320 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 270 |
| Thermal Conductivity, W/m-K | 420 | |
| 52 |
| Thermal Expansion, µm/m-K | 11 | |
| 7.3 |
Otherwise Unclassified Properties
| Density, g/cm3 | 15 | |
| 8.6 |
Common Calculations
| Stiffness to Weight: Axial, points | 8.5 | |
| 6.8 |
| Stiffness to Weight: Bending, points | 14 | |
| 18 |
| Thermal Diffusivity, mm2/s | 180 | |
| 23 |