ELECTROLYSIS GALVANIZED STEEL SHEET WITH IRON AND ZINC ALLOY HAVING SEVERAL IRON ALLOY AND ZINC ALLOY COATINGS

摘要

P ELECTROLYSIS GALVANIZED STEEL SHEET WITH IRON AND ZINC ALLOY HAVING SEVERAL IRON AND ZINC ALLOY COATINGS; AT LEAST ONE SURFACE OF THE STEEL SHEET HAS A LOWER LAYER CONSISTING OF AT LEAST ONE IRON AND ZINC ALLOY COATING AND A SUPERIOR LAYER B CONSISTING OF AT LEAST TWO ALLOY COATINGS OF IRON AND ZINC WITH VARIATIONS AND DETERMINED VALUES OF REPORTS OF IRON CONTENT TO SURFACE WEIGHT OF COATINGS AND TOTAL SURFACE WEIGHTS OF VARIOUS COATINGS; THE GALVANIZED TOLES OF THE INVENTION HAVE PROPERTIES WHICH MAKE THEM PARTICULARLY USEFUL IN THE AUTOMOTIVE INDUSTRY AND SIMILAR INDUSTRIES. / P