7403.22.00.00/Naval Bronze C46400 Unwrought Plates/Canada

Naval Bronze C46400 Unwrought Plates from Canada

Unwrought naval bronze C46400 cast plates with 39-42% zinc and 5% tin, but tin content controls classification as copper-tin base per note (b) allowance for zinc up to 10% when tin ≥3%. Traditional propeller and valve alloy.

Duty Rate — Canada → United States

1%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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Import Tips

• Note allows zinc up to 10% in bronzes; document this explicitly to prevent brass reclassification

• Propeller manufacturers often require MIL-SPEC certification; include with commercial invoice

• Beware Form 3229 requirements for alloys destined for defense contractors