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 | DF | .~.~.~ Over 2 percent manganese containing {3} |
46 | .~.~.~.~ Molybdenum or tungsten containing {1} | |
47 | DF | .~.~.~.~.~> Group IV or V transition metal containing |