BONDING AND CASTING ALLOY INGOT USED IN DENTISTRY FOR MAKING CROWNS AND BRIDGES. CHROMIUM ALLOY COMPOSITION WITH TUNGSTEN, SILICON, TRACE ELEMENTS, MANGANESE, IRON, CARBON, COBALT. NICKEL, BERYLIUM AND COPPER FREE. CONTAINS PREDOMINANTLY CHROMIUM.

THIS CHROMIUM ALLOY INGOTS USED IN DENTISTRY IS CLASSIFIED TO COMMODITY CODE 8112219000 IN ACCORDANCE WITH THE FOLLOWING: GENERAL INTERPRETATIVE RULES (GIR) GIR1 HAS BEEN USED TO CLASSIFY THIS PRODUCT BY THE TERMS OF HEADING 8112 AND ANY RELEVANT SECTION OR CHAPTER NOTES. GIR6 HAS BEEN USED TO CLASSIFY THE GOODS TO SUBHEADING LEVEL. SECTION AND CHAPTER NOTES 3. THROUGHOUT THE NOMENCLATURE, THE EXPRESSION 'BASE METALS' MEANS: IRON AND STEEL, COPPER, NICKEL, ALUMINIUM, LEAD, ZINC, TIN, TUNGSTEN (WOLFRAM), MOLYBDENUM, TANTALUM, MAGNESIUM, COBALT, BISMUTH, CADMIUM, TITANIUM, ZIRCONIUM, ANTIMONY, MANGANESE, BERYLLIUM, CHROMIUM, GERMANIUM, VANADIUM, GALLIUM, HAFNIUM, INDIUM, NIOBIUM (COLUMBIUM), RHENIUM AND THALLIUM. 5. CLASSIFICATION OF ALLOYS (OTHER THAN FERRO-ALLOYS AND MASTER ALLOYS AS DEFINED IN CHAPTERS 72 AND 74): (A) AN ALLOY OF BASE METALS IS TO BE CLASSIFIED AS AN ALLOY OF THE METAL WHICH PREDOMINATES BY WEIGHT OVER EACH OF THE OTHER METALS. (B) AN ALLOY COMPOSED OF BASE METALS OF THIS SECTION AND OF ELEMENTS NOT FALLING WITHIN THIS SECTION IS TO BE TREATED AS AN ALLOY OF BASE METALS OF THIS SECTION IF THE TOTAL WEIGHT OF SUCH METALS EQUALS OR EXCEEDS THE TOTAL WEIGHT OF THE OTHER ELEMENTS PRESENT. (C) IN THIS SECTION, THE TERM 'ALLOYS' INCLUDES SINTERED MIXTURES OF METAL POWDERS, HETEROGENEOUS INTIMATE MIXTURES OBTAINED BY MELTING (OTHER THAN CERMETS) AND INTERMETALLIC COMPOUNDS. 6. UNLESS THE CONTEXT OTHERWISE REQUIRES, ANY REFERENCE IN THE NOMENCLATURE TO A BASE METAL INCLUDES A REFERENCE TO ALLOYS WHICH, BY VIRTUE OF NOTE 5 ABOVE, ARE TO BE CLASSIFIED AS ALLOYS OF THAT METAL. 7. CLASSIFICATION OF COMPOSITE ARTICLES: EXCEPT WHERE THE HEADINGS OTHERWISE REQUIRE, ARTICLES OF BASE METAL (INCLUDING ARTICLES OF MIXED MATERIALS TREATED AS ARTICLES OF BASE METAL UNDER THE INTERPRETATIVE RULES) CONTAINING TWO OR MORE BASE METALS ARE TO BE TREATED AS ARTICLES OF THE BASE METAL PREDOMINATING BY WEIGHT OVER EACH OF THE OTHER METALS. FOR THIS PURPOSE: (A) IRON AND STEEL, OR DIFFERENT KINDS OF IRON OR STEEL, ARE REGARDED AS ONE AND THE SAME METAL. (B) AN ALLOY IS REGARDED AS BEING ENTIRELY COMPOSED OF THAT METAL AS AN ALLOY OF WHICH, BY VIRTUE OF NOTE 5, IT IS CLASSIFIED. (C) A CERMET OF HEADING 8113 IS REGARDED AS A SINGLE BASE METAL. HARMONISED SYSTEM EXPLANATORY NOTES GENERAL NOTE TO CHAPTER 81. THIS CHAPTER IS LIMITED TO THE FOLLOWING BASE METALS, THEIR ALLOYS, AND ARTICLES THEREOF WHICH ARE NOT MORE SPECIFICALLY COVERED ELSEWHERE IN THE NOMENCLATURE. (B) BERYLLIUM, CHROMIUM, GERMANIUM, VANADIUM, GALLIUM, HAFNIUM, INDIUM, NIOBIUM (COLOMBIUM), RHENIUM AND THALLIUM (HEADING 81.12). MOST OF THE METALS CLASSIFIED IN THE CHAPTER ARE MAINLY USED IN THE FORM OF ALLOYS OR CARBIDES, RATHER THAN IN THE PURE STATE. THE CLASSIFICATION OF SUCH ALLOYS FOLLOWS THE RULES SET OUT IN NOTE 5 TO SECTION XV. HARMONISED SYSTEM EXPLANATORY NOTE (B) CHROMIUM TO HEADING 81.12. CHROMIUM IS MAINLY EXTRACTED FROM CHROMITE (CHROME IRON ORE), WHICH IS CONVERTED TO THE SESQUIOXYDE WHICH IS THEN REDUCED TO PRODUCE CHROMIUM METAL. CHROMIUM IS STEEL-GREY WHEN UNPOLISHED, BUT WHITE AND SHINY WHEN POLISHED. IT IS VERY HARD AND RESISTANT TO CORROSION, BUT NOT VERY MALLEABLE OR DUCTILE. PURE CHROMIUM CONSTITUTES THE COATING OF VARIOUS ARTICLES OF OTHER METALS (ELECTROLYTIC CHROMIUM-PLATING). ITS MAIN USE (USUALLY AS FERRO-CHROME, SEE CHAPTER 72) IS IN THE PREPARATION OF STAINLESS STEEL. MOST ALLOYS OF THE METAL (E.G., WITH NICKEL OR COBALT) ARE, EXCLUDED FROM THIS HEADING IN ACCORDANCE WITH NOTE 5 TO SECTION XV.