High-Phosphorus Phosphor Copper CuP15
CuP15 grade phosphor copper is a chemically defined phosphide with over 15% phosphorus content, primarily used as a deoxidizer in copper and bronze casting to remove oxygen and improve fluidity. It falls under HTS 2853.90.10.00 per heading 2853 which explicitly includes copper phosphide (phosphor copper) exceeding 15% phosphorus by weight. Supplied as irregular lumps or waffles for metallurgical addition.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If phosphorus content between 5-15% by weight
Phosphor copper alloys with 5-15% phosphorus are master alloys under 7405.22, distinguished by lower P content from high-P phosphides.
If used primarily as supported catalyst in chemical reactions
Phosphides supported on carriers for catalytic use fall under heading 3815 for catalyst preparations.
If marketed as phosphorus source rather than copper phosphide
Pure elemental phosphorus is under 2804, but copper phosphides remain in 2853 per chapter notes.
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Import Tips & Compliance
• Include spectrographic analysis certificates proving phosphorus >15%; declare as phosphide compound to avoid Chapter 74 reclassification
• Watch for REACH/ TSCA compliance on phosphorus compounds
Related Products under HTS 2853.90.10.00
Phosphor Copper Alloy CuP8
Phosphor copper alloy CuP8 contains approximately 8% phosphorus by weight combined with copper, exceeding the 15% threshold when formulated for high-phosphorus variants used in non-ferrous metallurgy. It is classified under HTS 2853.90.10.00 as a copper phosphide (phosphor copper) due to its chemical composition as a phosphide compound per Chapter 28 notes, specifically meeting the criteria for heading 2853 which includes copper phosphide with over 15% phosphorus. This master alloy is supplied in ingot or shot form for deoxidizing and alloying applications.
Phosphor Copper Deoxidizer Shot P20Cu80
P20Cu80 phosphor copper shot consists of 20% phosphorus and 80% copper, cast into small spherical pellets for precise addition in aluminum bronze and brass production. Classified in HTS 2853.90.10.00 as it qualifies as copper phosphide exceeding 15% phosphorus weight, per Chapter 28 note on heading 2853 including phosphor copper. Essential for preventing gas porosity in castings.
Cu92P11 Phosphor Copper Waffle Ingots
Although typically listed as 11% P, specialized high-P variants of Cu92P11 exceed 15% phosphorus in enriched formulations for specific deoxidation needs, supplied as waffle-shaped ingots. HTS 2853.90.10.00 applies strictly to copper phosphides >15% P per the subheading description and Chapter 28 note 7 on heading 2853. Used in non-ferrous foundries for alloying.
Industrial Grade Copper Phosphide Cu3P2 Pellets
Cu3P2 (copper diphosphide) pellets with stoichiometry yielding >15% phosphorus by weight, used in chemical synthesis and as phosphorus source in high-performance alloys. Directly matches HTS 2853.90.10.00 for chemically defined copper phosphides per heading 2853 and subheading specificity. High purity for semiconductor doping precursors.
Phosphor Copper Master Alloy P18Cu82 Granules
Granular phosphor copper P18Cu82 with 18% phosphorus content for granular feed in continuous casting operations of copper alloys. HTS 2853.90.10.00 due to explicit >15% P copper phosphide classification under heading 2853, distinguishing from lower-P alloys in Chapter 74. Improves mechanical properties in brasses.
High Purity CuP Phosphor Copper for Brazing
High-purity CuP with >15% phosphorus optimized for silver brazing alloy production, supplied in cut wire or coarse powder. Classified HTS 2853.90.10.00 as phosphor copper phosphide per chemical definition and subheading. Low impurity levels prevent brittle phases in joints.