U.S. exports of Copper Mattes & Cement Copper (Precipitated Copper) (SITC 28320) totaled $65K in August 2026.
Copper Mattes & Cement Copper (Precipitated Copper) imports of $22K in August 2026 ran 36% above the year-to-date monthly average of $16K.
Last updated: August 2026 dataCopper matte is an intermediate smelter product — a molten mixture of copper and iron sulfides — produced by partial smelting of copper concentrates before the converting stage that yields blister copper. Cement copper, by contrast, is precipitated from leach solutions by cementation on iron scrap, a hydrometallurgical route common in heap-leach operations. These two distinct intermediate forms serve different points in the copper refining chain and are traded separately from both concentrates and refined metal, with their copper content and impurity profile determining their commercial value.
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1 import shipments a month
Copper concentrate is a beneficiated ore product still containing sulfide minerals and gangue, while copper matte is a smelted intermediate with a significantly higher copper content — typically 50–75% — produced after the concentrate has been partially processed in a furnace. The two products enter different stages of the refining chain and are priced and classified accordingly.
Cement copper is produced by a hydrometallurgical process in which copper ions in acidic leach solutions are displaced onto iron scrap through a cementation reaction, yielding a spongy or powdery copper product. Its purity and physical form vary by operation, and buyers — typically secondary smelters or refineries — assess the copper content and impurity levels carefully before purchase, as these directly affect refining costs.
Basic heading 194 of 239 in section 2
Basic heading 28320 · $65K of $7.8B
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Exports · August 2026
destination
Cambodia and Indonesia together take 96% of it.
customs district
Census does not publish district detail for this classification system.
origin
Census does not publish state detail for this classification system.
entry
Census does not publish port detail for this classification system.
ImportsExports
Imports
$22KYoY · free account
Exports
$65KYoY · free account
Low of 7 reported months · imports
Low · free accountOver the twelve months to August 2026, the U.S. exported $1.5M of Copper Mattes & Cement Copper (Precipitated Copper).
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026 · imports 7 of 12 months reported. Source: U.S. Census Bureau.