148 / | HD | METAL TREATMENT |
95 | DF | PROCESS OF MODIFYING OR MAINTAINING INTERNAL PHYSICAL STRUCTURE (I.E., MICROSTRUCTURE) OR CHEMICAL PROPERTIES OF METAL, PROCESS OF REACTIVE COATING OF METAL AND PROCESS OF CHEMICAL-HEAT REMOVING (E.G., FLAME-CUTTING, ETC.) OR BURNING OF METAL {17} |
559 | DF | .~ Heating or cooling of solid metal {22} |
560 | .~.~ Actinide or trans-actinide metal or alloy having greater than 50 percent actinide or trans-actinide metals |