Grade 21 Titanium vs. K94200 Alloy
Grade 21 titanium belongs to the titanium alloys classification, while K94200 alloy belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is grade 21 titanium and the bottom bar is K94200 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 140 |
| Elongation at Break, % | 9.0 to 17 | |
| 5.0 to 32 |
| Poisson's Ratio | 0.32 | |
| 0.34 |
| Shear Modulus, GPa | 51 | |
| 54 |
| Shear Strength, MPa | 550 to 790 | |
| 330 to 410 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 500 to 710 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 270 to 650 |
Thermal Properties
| Melting Onset (Solidus), °C | 1690 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 500 |
| Thermal Conductivity, W/m-K | 7.5 | |
| 15 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 5.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.4 | |
| 8.2 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 180 | |
| 35 to 130 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 250 to 1460 |
| Stiffness to Weight: Axial, points | 14 | |
| 9.8 |
| Stiffness to Weight: Bending, points | 32 | |
| 21 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 17 to 24 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 17 to 22 |
| Thermal Diffusivity, mm2/s | 2.8 | |
| 3.7 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 49 to 70 |