Grade 21 Titanium vs. Nickel Beryllium 360
Grade 21 titanium belongs to the titanium alloys classification, while nickel beryllium 360 belongs to the nickel alloys. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is nickel beryllium 360.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 200 |
| Elongation at Break, % | 9.0 to 17 | |
| 1.0 to 30 |
| Fatigue Strength, MPa | 550 to 660 | |
| 260 to 710 |
| Poisson's Ratio | 0.32 | |
| 0.3 |
| Shear Modulus, GPa | 51 | |
| 77 |
| Shear Strength, MPa | 550 to 790 | |
| 510 to 1100 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 780 to 1860 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 380 to 1590 |
Thermal Properties
| Melting Completion (Liquidus), °C | 1740 | |
| 1330 |
| Melting Onset (Solidus), °C | 1690 | |
| 1200 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 460 |
| Thermal Conductivity, W/m-K | 7.5 | |
| 48 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.4 | |
| 8.3 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 180 | |
| 12 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 360 to 3440 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 32 | |
| 24 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 26 to 62 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 23 to 41 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 13 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 19 to 46 |