| 148 / | HD | METAL TREATMENT |
|
| 400 | DF | STOCK {20} |
| 320 |  | .~ Ferrous (i.e., iron base) {10} |
| 321 | DF | .~.~> 1.7 percent or more carbon containing (e.g., cast iron) {3} |
| 325 | DF | .~.~> Nine percent or more chromium containing {2} |
| 328 | DF | .~.~> Age or precipitation hardened or strengthed |
| 329 | DF | .~.~> Eight percent or more manganese containing |
| 330 | DF | .~.~> Beryllium or boron containing |
| 331 | DF | .~.~> Rare earth meal containing |
| 332 | DF | .~.~> Copper containing |
| 333 | DF | .~.~> Chromium containing, but less than 9 percent {1} |
| 336 | DF | .~.~> Nickel containing |
| 337 | DF | .~.~> Three percent or more manganese containing or containing other transition metal in any amount |