Brazil NCM · 8-digit subitem

NCM 2818.10.10 – White corundum, over 90% passing a 63 µm sieve

NCM 2818.10.10 (also written 28181010) is Brazil's code for white corundum, over 90% passing a 63 µm sieve. Its first 6 digits are HS code 2818.10.

Official description of NCM 2818.10.10

PortuguêsOfficial
Branco, que passe através de uma peneira com abertura de malha de 63 micrômetros (mícrons) em proporção superior a 90 %, em peso
EnglishUnofficial translation

White, passing through a sieve with a mesh opening of 63 micrometres (microns) in a proportion exceeding 90% by weight

Nomenclatura Comum do Mercosul (Siscomex). Updated Oct 2026 · In force since Apr 2022 (Res Gecex 272/2021).

How to read NCM 2818.10.10

28Chapter 18Heading 10Subheading

HS code 2818.10
Same in every country

1Item 0Subitem

Added by Mercosur
Brazil, Argentina, Paraguay, Uruguay

The first 6 digits are the international HS code, so their meaning is the same in every country; Brazil publishes the text in Portuguese. Digits 7 and 8 are Brazil's own split of that HS code. The full 8-digit code is used on import declarations (DUIMP), invoices (NF-e) and tax filings.

Full classification path

  1. Chapter 28 Inorganic chemicals; organic and inorganic compounds of precious metals; of rare earth metals, of radio-active elements and of isotopes Produtos químicos inorgânicos; compostos inorgânicos ou orgânicos de metais preciosos, de elementos radioativos, de metais das terras raras ou de isótopos.
  2. Heading 28.18 Aluminium oxide (including artificial corundum); aluminium hydroxide Corindo artificial, de constituição química definida ou não; óxido de alumínio; hidróxido de alumínio.
  3. Subheading 2818.10 Aluminium oxide; artificial corundum Corindo artificial, de constituição química definida ou não
  4. Subitem 2818.10.10 White, passing through a sieve with a mesh opening of 63 micrometres (microns) in a proportion exceeding 90% by weight Branco, que passe através de uma peneira com abertura de malha de 63 micrômetros (mícrons) em proporção superior a 90 %, em peso

Other NCM codes under HS 2818.10

2818.10.90 Other artificial corundumOutros

Questions about NCM 2818.10.10

What is NCM 2818.10.10?

NCM 2818.10.10 (28181010) is the Brazilian (Mercosur) code for white corundum, over 90% passing a 63 µm sieve. Its official Portuguese description is “Branco, que passe através de uma peneira com abertura de malha de 63 micrômetros (mícrons) em proporção superior a 90 %, em peso”.

What is the HS code for NCM 2818.10.10?

HS 2818.10 (Aluminium oxide; artificial corundum). The first 6 digits of an NCM code are its international HS code; the last 2 digits are Brazil's own split.

Is an NCM code the same as an HS code?

The first 6 digits are the same in every country. NCM adds an item digit (7th) and a subitem digit (8th). A code ending in 00 means Brazil does not split that HS code further.

Which countries use NCM 2818.10.10?

All Mercosur members use the same NCM codes: Argentina, Brazil, Paraguay and Uruguay.

Source: Siscomex Classif NCM table, updated Oct 2026 (Resolução Gecex nº 926/2026). The Portuguese text is the official one; the English is our translation.