Type 3 Niobium vs. ASTM A302 Alloy Steel
Type 3 niobium belongs to the otherwise unclassified metals classification, while ASTM A302 alloy steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is Type 3 niobium and the bottom bar is ASTM A302 alloy steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 | |
| 180 to 190 |
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 190 |
| Elongation at Break, % | 23 | |
| 20 to 23 |
| Poisson's Ratio | 0.4 | |
| 0.29 |
| Shear Modulus, GPa | 38 | |
| 73 |
| Tensile Strength: Ultimate (UTS), MPa | 220 | |
| 590 to 620 |
| Tensile Strength: Yield (Proof), MPa | 140 | |
| 350 to 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 250 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 470 |
| Thermal Conductivity, W/m-K | 42 | |
| 39 to 51 |
| Thermal Expansion, µm/m-K | 7.3 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.6 | |
| 7.8 to 7.9 |
| Embodied Water, L/kg | 160 | |
| 48 to 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 44 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 93 | |
| 330 to 410 |
| Stiffness to Weight: Axial, points | 6.8 | |
| 13 |
| Stiffness to Weight: Bending, points | 18 | |
| 24 |
| Strength to Weight: Axial, points | 7.2 | |
| 21 to 22 |
| Strength to Weight: Bending, points | 9.5 | |
| 20 to 21 |
| Thermal Diffusivity, mm2/s | 18 | |
| 10 to 14 |
| Thermal Shock Resistance, points | 21 | |
| 17 to 18 |