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.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphor bronze but thinner
Sheets 0.15-5mm thick phosphor bronze use the counterpart thin subheading.
If other copper alloys not specified
Catch-all for unlisted copper alloy plates/sheets if composition doesn't fit defined bronzes.
If machined into chain components
Post-import processing into copper chain moves to articles of copper heading.
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Import Tips & Compliance
• Cite UNS C51900 specification in commercial invoice and packing list for classification support
• Provide width/length dimensions; very narrow widths might classify as strip vs plate
• Declare exact phosphorus percentage; trace amounts may challenge 'phosphor bronze' status
Related Products under HTS 7409.39.10.30
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