Marine Grade Phosphor Bronze Sheet 7mm
7mm thick marine-grade phosphor bronze sheet optimized for seawater corrosion resistance through controlled phosphorus content. Meets HTS 7409.39.10.30 criteria as phosphor bronze plate/sheet >5mm thick in copper-tin alloys. Applied in propeller shafts and boat hardware.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If unwrought refined copper
Unwrought copper (not plates/sheets) uses earlier Chapter 74 headings before fabrication.
If for thinner phosphor bronze (<5mm)
Thickness threshold separates thick plates from standard bronze sheets in the tariff.
If made into rivets or washers
Semi-manufactured phosphor bronze fasteners become 'nails, tacks, drawing pins' heading.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Obtain corrosion test data if marketed as 'marine grade' to support premium pricing and classification
• Ensure flatness tolerances are documented to avoid confusion with bent/formed profiles
• Comply with Buy American Act waivers by providing origin certificates for government projects
Related Products under HTS 7409.39.10.30
Phosphor Bronze Sheet 6mm Thick
A flat phosphor bronze sheet measuring 6mm in thickness, made from copper-tin base alloy with phosphorus addition for enhanced strength and corrosion resistance. Classified under HTS 7409.39.10.30 due to its bronze composition, thickness exceeding 5mm, and phosphor bronze specification. Commonly used in heavy-duty industrial applications requiring durability.
Phosphor Bronze Plate 8mm Thick
Heavy-duty 8mm thick phosphor bronze plate, a copper-tin alloy with phosphorus for improved wear resistance and spring properties. Fits HTS 7409.39.10.30 as a thick phosphor bronze product exceeding 5mm thickness in the bronze category. Ideal for structural components in machinery and marine hardware.
CDA 521 Phosphor Bronze Strip 5.5mm
CDA 521 grade phosphor bronze strip at 5.5mm thickness, featuring 8% tin and 0.2% phosphorus for excellent fatigue resistance. Classified in HTS 7409.39.10.30 for its phosphor bronze alloy, copper-tin base, and thickness over 5mm. Used in electrical contacts and diaphragms requiring high strength.
High-Strength Phosphor Bronze Plate 10mm
10mm thick high-strength phosphor bronze plate with enhanced phosphorus for superior yield strength in demanding applications. Classified under HTS 7409.39.10.30 for thick phosphor bronze in the copper-tin base alloy group. Suited for heavy press tools and wear plates.
UNS C51900 Phosphor Bronze 6.2mm Sheet
UNS C51900 phosphor bronze sheet at 6.2mm thickness, containing 4-6% tin and 0.1-0.35% phosphorus for balanced formability and strength. Fits HTS 7409.39.10.30 as thick phosphor bronze plate/sheet of copper-tin alloy. Popular for bellows and burst discs in pressure vessels.