Gunmetal Bronze C90500 Coil 10mm Thick
Traditional gunmetal C90500 (88Cu-10Sn-2Zn) heavy coiled plate for valves and fittings. Qualifies HTS 7409.31.10.00 as classic copper-tin bronze with minimal zinc <10%.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as cut-to-length plates >5mm
Plates/sheets not in coils use 7407.22; coil form specific to 7409 subheading.
If made into copper tube fittings
Further manufactured into tubes/fittings shifts essential character to 7412.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Reference ASTM B62 standard in documentation for C90500 composition verification
• Separate from brass coils in shipment to avoid alloy confusion during inspection
• Declare weight per coil accurately for duty calculation on heavy gauges
Related Products under HTS 7409.31.10.00
Phosphor Bronze C51000 Coil Sheet 6mm Thick
Phosphor bronze C51000 is a copper-tin base alloy (Cu-Sn 5%) commonly used for heavy-duty springs and electrical contacts. This product is supplied in coils with a thickness of 6 mm, exceeding the 5 mm threshold for HTS 7409.31.10.00. It meets the subheading note definition for bronzes where tin predominates over other elements.
Aluminum Bronze C95400 Coil Strip 8mm Thick
C95400 aluminum bronze (Cu-Sn-Al alloy with tin predominant) is used in marine propellers and heavy wear parts. This 8 mm thick coiled sheet qualifies under HTS 7409.31.10.00 as a copper-tin base alloy per subheading note (b), despite aluminum presence since tin > other elements.
Leaded Tin Bronze C93200 Coil Plate 5.5mm Thick
C93200 SAE 660 bearing bronze (Cu-Sn-Pb) in 5.5 mm coiled form for heavy bearings and bushings. Classifies under HTS 7409.31.10.00 as copper-tin base alloy where tin predominates, with lead as permitted addition.
Silicon Bronze C65500 Coil Sheet 7mm Thick
C65500 silicon bronze (Cu-Sn-Si low tin) heavy coil for weld wire and fasteners. At 7 mm thick in coils, it falls under HTS 7409.31.10.00 provided tin predominates over silicon per bronze definition.