| Titanium Grade | Ti Content, mass% | Impurity Content, Mass %, Not Exceeding | Sum of Other Impurities | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Si | Fe | O | H | N | C | Al | Cr | V | Sn | Cu | |||
| ASTM B 348 Grade 1 | balance | - | 0.20 | 0.18 | 0.015 | 0.03 | 0.08 | - | - | - | - | - | 0.40 |
| ASTM B 348 Grade 4 | balance | - | 0.50 | 0.40 | 0.015 | 0.05 | 0.08 | - | - | - | - | - | 0.40 |
| Proprietary Grade | balance | 0.02 | 0.03 | 0.05 | 0.002 | 0.008 | 0.015 | 0.04 | 0.01 | 0.04 | 0.001 | 0.001 | 0.06 |