420 / | HD | ALLOYS OR METALLIC COMPOSITIONS |
580 | DF | CONTAINING OVER 50 PER CENT METAL BUT NO BASE METAL {4} |
581 | DF | .~ Iron containing {2} |
583 | DF | .~.~ Chromium containing {1} |
584.1 | DF | .~.~.~ Nickel containing {2} |
585 | DF | .~.~.~.~ Cobalt containing {1} |
586 | .~.~.~.~.~ Titanium, or zirconium containing |