1, tc4 titanium alloy plate chemical composition should be consistent with the provisions of GB / T 3620.1, the demand side re-examination, the allowable deviation of the chemical composition should be consistent with the provisions of GB / T 3620.2.
2, the allowable deviation of the thickness of the plate shall be in accordance with the provisions of Table I.
The permissible deviation of the width and length of the plate shall conform to the provisions of Table II.
4, the corners of the plate should be cut into right angles as far as possible. Cutting diagonal should not exceed the permissible deviation of the length and width of the plate.
Chemical Composition
| Grade | N | C | H | Fe | O | Al | V | Pa | Mo | Ni | Ti |
| Gr1 | 0.03 | 0.08 | 0.015 | 0.2 | 0.18 | / | / | / | / | / | Bal |
| Gr2 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | / | / | / | / | / | Bal |
| Gr3 | 0.05 | 0.08 | 0.015 | 0.3 | 0.35 | / | / | / | / | / | Bal |
| Gr4 | 0.05 | 0.08 | 0.015 | 0.5 | 0.4 | / | / | / | / | / | Bal |
| Gr5 | 0.05 | 0.08 | 0.015 | 0.4 | 0.2 | 5.5-6.75 | 3.5-4.5 | / | / | / | Bal |
| Gr7 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | / | / | 0.12-0.25 | / | / | Bal |
| Gr9 | 0.03 | 0.08 | 0.015 | 0.25 | 0.15 | 2.5-3.5 | 2.0-3.0 | / | / | / | Bal |
| Gr12 | 0.03 | 0.08 | 0.015 | 0.3 | 0.25 | / | / | / | 0.2-0.4 | 0.6-0.9 | Bal |
