ASTM B522 Class II vs. Titanium 4-4-2
ASTM B522 class II belongs to the otherwise unclassified metals classification, while titanium 4-4-2 belongs to the titanium 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. 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 B522 class II and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 96 | |
| 110 |
| Elongation at Break, % | 1.1 to 28 | |
| 10 |
| Poisson's Ratio | 0.41 | |
| 0.32 |
| Shear Modulus, GPa | 34 | |
| 42 |
| Shear Strength, MPa | 180 to 280 | |
| 690 to 750 |
| Tensile Strength: Ultimate (UTS), MPa | 280 to 490 | |
| 1150 to 1250 |
| Tensile Strength: Yield (Proof), MPa | 120 to 210 | |
| 1030 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 77 | |
| 410 |
| Melting Completion (Liquidus), °C | 1030 | |
| 1610 |
| Melting Onset (Solidus), °C | 1030 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 160 | |
| 540 |
| Thermal Expansion, µm/m-K | 15 | |
| 8.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 17 | |
| 4.7 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 4.4 to 63 | |
| 110 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 75 to 230 | |
| 4700 to 5160 |
| Stiffness to Weight: Axial, points | 3.1 | |
| 13 |
| Stiffness to Weight: Bending, points | 8.9 | |
| 34 |
| Strength to Weight: Axial, points | 4.4 to 7.8 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 5.5 to 8.0 | |
| 52 to 55 |
| Thermal Shock Resistance, points | 13 to 24 | |
| 86 to 93 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 0 | |
| 0 to 0.080 |
| Gold (Au), % | 68.5 to 69.5 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 0 | |
| 0 to 0.2 |
| Molybdenum (Mo), % | 0 | |
| 3.0 to 5.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Platinum (Pt), % | 5.5 to 6.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0.3 to 0.7 |
| Silver (Ag), % | 24.5 to 25.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.010 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 85.8 to 92.2 |
| Residuals, % | 0 to 0.26 | |
| 0 to 0.4 |