Manganese Bronze Wire for Springs
Manganese bronze wire for springs, made from a copper-zinc-manganese-tin alloy, is a copper alloy wire. It is classified under tariff item 7408.29.00 as 'other' copper alloy wire because it does not fit the definitions of brass, bronze, or nickel silver under subheading note 1. This wire is used in spring applications requiring high strength and corrosion resistance.
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 |
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the zinc content predominates and the alloy is classified as brass
If the manganese and tin are minor elements, the wire may be considered a copper-zinc base alloy.
If the alloy is a copper-nickel base alloy
This subheading covers copper-nickel base alloy wire, which would apply if nickel is present in significant amounts.
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
• Ensure the alloy composition is documented, as manganese bronze may be classified differently if tin or zinc content changes
• Verify the wire is uncoated and not further worked beyond drawing
• Check if the wire meets Canadian standards for spring wire applications
Related Products under Tariff item 7408.29.00
Admiralty Brass Condenser Wire 0.048 Inch
Admiralty brass condenser wire is 0.048-inch uncoated wire made of 70Cu-29Zn-1Sn alloy, used for heat exchanger fins. The alloy meets the brass definition under subheading note 1(a) because tin content is less than 3%, and it is uncoated copper alloy wire. It is classified under tariff item 7408.29.00 as 'other' copper alloy wire.
Aluminum Brass Heat Exchanger Wire
Aluminum brass heat exchanger wire is uncoated wire made of 76Cu-22Zn-2Al alloy, used for condenser tubes. The alloy meets the brass definition under subheading note 1(a) because zinc predominates over other elements, and it is uncoated copper alloy wire. It falls under tariff item 7408.29.00 as 'other' copper alloy wire.
Beryllium Copper Tempered Wire AWG 18
Beryllium copper tempered wire is AWG 18 wire made of a copper-beryllium alloy with less than 3% beryllium, used for springs and fasteners. The alloy is a copper base alloy that does not fit the specific definitions of brass, bronze, or nickel silver, so it is classified as 'other' copper alloy wire. It is uncoated and falls under tariff item 7408.29.00.
Brass MIG Welding Wire 0.030 Inch
Brass MIG welding wire is 0.030-inch uncoated wire made of 70/30 copper-zinc brass alloy, used for welding galvanized steel and dissimilar metals. The alloy meets the brass definition under subheading note 1(a), and it is uncoated copper alloy wire. It falls under tariff item 7408.29.00 as 'other' copper alloy wire.
Copper-Clad Brass Welding Wire
Copper-clad brass welding wire consists of a brass core pressure-bonded with pure copper cladding, designed for specialized MIG welding electrodes. The brass core meets the definition of a copper-zinc base alloy (brass) under subheading note 1(a), and the copper cladding makes it a metal-coated copper alloy wire. It is classified under tariff item 7408.29.00 as 'other' copper alloy wire.
Copper-Nickel 90/10 Marine Grade Wire
Copper-nickel 90/10 marine grade wire is uncoated wire made of 90% copper and 10% nickel with zinc content not exceeding 1%, used for corrosion-resistant marine sensors and piping. The alloy meets the copper-nickel base alloy definition under subheading note 1(d), and it is uncoated copper alloy wire. It falls under tariff item 7408.29.00 as 'other' copper alloy wire.