Cu-Si Master Alloy 10% Silicon from China
Copper-silicon master alloy with 10% silicon, supplied as cut pieces for bronze foundries to achieve precise silicon bronze compositions. Classified under HTS 7405.00.60.50 as other copper master alloys. Essential for castings requiring corrosion resistance and strength.
Duty Rate — China → United States
25%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Document silicon content precisely; high silicon may trigger bronze alloy scrutiny per subheading notes
• Use 'master alloy' nomenclature consistently across shipping documents
• Provide evidence of complete dissolution in copper melts to distinguish from alloy scrap