Tin Bronze C90300 Continuous Cast Bar
Tin bronze C90300 continuous cast unwrought bars with 7.5-9% tin, 3% zinc, and 88% copper. This gunmetal alloy meets strict bronze criteria under subheading note (b), with tin predominating over zinc. Produced by continuous casting without subsequent reduction, these bars are used for valves and fittings.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If zinc content is 10% or more
The alloy would be classified as copper-zinc base (brass).
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Confirm the tin content is at least 3% and zinc is below 10%
• Provide a certificate of analysis
• Ensure the bars are unwrought and not machined or worked after casting
Related Products under Tariff item 7403.22.00
Aluminum Bronze C95400 Unwrought Ingots
Aluminum bronze C95400 unwrought ingots containing 10-11.5% aluminum, 4% iron, and 3.5-5% tin. Although aluminum is present, tin predominates over each other individual element per subheading note (b), classifying this as a copper-tin base alloy. These ingots are used for heavy-duty gears and marine propellers.
High-Leaded Tin Bronze C93800 Ingots
High-leaded tin bronze C93800 ingots with 10% tin and 20% lead for exceptional machinability in screw machine products. Tin predominates over lead and other elements, maintaining bronze classification under subheading note (b). These unwrought ingots are used for high-speed machining applications.
Leaded Tin Bronze C93200 Unwrought Bars
Leaded tin bronze C93200 unwrought bars with 6-8% tin and 6-8% lead, suitable for bearings and bushings. Tin predominates over lead and other non-copper elements, meeting the bronze definition under subheading note (b). These bars are cast in simple shapes and not subsequently worked.
Manganese Bronze C86500 Unwrought Form
Manganese bronze C86500 unwrought castings with 4% tin, 39% zinc, and 3% manganese. Despite high zinc, the tin content ensures bronze classification because tin predominates over each other element except zinc, which is allowed up to 10% when tin is 3% or more. Used for high tensile strength marine castings and gears.
Naval Bronze C46400 Unwrought Plates
Naval bronze C46400 unwrought cast plates with 39-42% zinc and 5% tin. The tin content controls classification as copper-tin base alloy per subheading note (b), which allows zinc up to 10% when tin is 3% or more. These plates are traditional for propellers and valve components.
Phosphor Bronze C51000 Unwrought Ingots
Phosphor bronze C51000 unwrought ingots containing approximately 5% tin and 0.2% phosphorus. Tin predominates over phosphorus and other elements, classifying this as a copper-tin base alloy under subheading note (b). These ingots are used in manufacturing springs, fasteners, and electrical components.