| 148 / | HD | METAL TREATMENT |
| 400 | DF | STOCK {20} |
| 405 | DF | .~ Age or precipitation hardened or strengthened {7} |
| 415 | DF | .~.~ Aluminum base {1} |
| 416 | DF | .~.~.~ Copper containing {1} |
| 417 | | .~.~.~.~ Magnesium containing {1} |
| 418 | DF | .~.~.~.~.~> Vanadium, niobium or tantalum containing |