420 / | HD | ALLOYS OR METALLIC COMPOSITIONS |
8 | DF | FERROUS (I.E., IRON BASE) {24} |
34 | DF | .~ Nine percent or more chromium containing {14} |
43 | DF | .~.~ Eight percent or more nickel containing {6} |
44 | .~.~.~ Over 2 percent manganese containing {3} | |
45 | DF | .~.~.~.~> Copper containing |
46 | DF | .~.~.~.~> Molybdenum or tungsten containing {1} |
48 | DF | .~.~.~.~> Group IV or V transition metal containing |