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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If refined copper rather than alloyed bronze
Pure copper coils >5mm thick go to 7409.11; alloy composition determines base metal shift.
If not in coils but as flat sheets/plates
7409.31 covers coils only; non-coiled bronze plates >5mm use different 7409 structure.
If further worked (e.g., machined or punched)
Finished articles or profiles from bronze shift to Chapter 74 heading 7419.
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Import Tips & Compliance
• Provide chemical analysis showing tin weight % exceeds zinc and other elements except allowable zinc <10%
• Measure coil thickness precisely as customs may gauge samples; >5mm required for this subheading
• Label as 'machinery parts material' if pre-cut to avoid essential character shift
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.
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.
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%.