428 / | HD | STOCK MATERIAL OR MISCELLANEOUS ARTICLES |
544 | DF | ALL METAL OR WITH ADJACENT METALS {31} |
615 | DF | .~ Composite; i.e., plural, adjacent, spatially distinct metal components (e.g., layers, joint, etc.) {15} |
616 | DF | .~.~ Deflectable by temperature change (e.g., thermostat element) {3} |
619 | .~.~.~ Both components Fe-based with more than 10% Ni |