# HS code 2523.10: Cement clinkers

> HS code 2523.10 covers cement clinkers. It sits in heading 25.23 (portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement). Other goods of heading 25.23 are classified under 2523.21 (portland cement, white cement, whether or not artificially coloured), 2523.29 (portland cement, other), 2523.30 (aluminous cement) or 2523.90 (other hydraulic cements). National tariff lines under 2523.10 are live on border.bot for the United States (1 line, also used by 1 other country).

Source: https://border.bot/hs-codes/252310
Last updated: 11 October 2026

[HS codes](https://border.bot/hs-codes) / [Chapter 25](https://border.bot/hs-codes/25) / [25.23](https://border.bot/hs-codes/2523) / [2523.10](https://border.bot/hs-codes/252310)

## Key facts

- HS code: 2523.10
- Covers: Cement clinkers
- Heading: [25.23: Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers](https://border.bot/hs-codes/2523)
- Chapter: [25: Salt; sulphur; earths and stone; plastering materials, lime and cement](https://border.bot/hs-codes/25)
- Edition: HS2022
- Duty in the United States: [See its 1 line](https://border.bot/countries/united-states/hs-codes/252310)

## What this code covers

HS code 2523.10 covers cement clinkers.

The legal text of the subheading is “Cement clinkers”, in HS2022.

## What it doesn’t cover

Other goods of heading 25.23 are classified under 2523.21 (portland cement, white cement, whether or not artificially coloured), 2523.29 (portland cement, other), 2523.30 (aluminous cement) or 2523.90 (other hydraulic cements).

- [2523.21](https://border.bot/hs-codes/252321) Portland cement: White cement, whether or not artificially coloured
- [2523.29](https://border.bot/hs-codes/252329) Portland cement: Other
- [2523.30](https://border.bot/hs-codes/252330) Aluminous cement
- [2523.90](https://border.bot/hs-codes/252390) Other hydraulic cements

## How it is structured

2523.10 is a six-digit subheading. Its first two digits, 25, are the chapter; the first four, 2523, are heading 25.23; the last two, 10, identify the subheading within the heading.

Countries add their own digits after these six for their national tariff lines.

- Chapter 25: Salt; sulphur; earths and stone; plastering materials, lime and cement
- Heading 25.23: Portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers
- Subheading 2523.10: Cement clinkers

## In other countries

National tariff lines under 2523.10 are live on border.bot for the United States (1 line, also used by 1 other country).

- [United States](https://border.bot/countries/united-states/hs-codes/252310): 1 line, used by 1 other country

- Previous subheading: [2522.30](https://border.bot/hs-codes/252230) Hydraulic lime
- Next subheading: [2523.21](https://border.bot/hs-codes/252321) Portland cement: White cement, whether or not artificially coloured

## Frequently asked questions

### What does HS code 2523.10 cover?

HS code 2523.10 covers cement clinkers.

### Which heading and chapter is HS code 2523.10 in?

HS code 2523.10 is in heading 25.23 (portland cement, aluminous cement, slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers) in chapter 25 (salt; sulphur; earths and stone; plastering materials, lime and cement).

### Where are goods of heading 25.23 classified when 2523.10 doesn’t fit?

Other goods of heading 25.23 are classified under 2523.21 (portland cement, white cement, whether or not artificially coloured), 2523.29 (portland cement, other), 2523.30 (aluminous cement) or 2523.90 (other hydraulic cements).

### Which countries’ tariffs list national lines under HS code 2523.10?

National tariff lines under 2523.10 are live on border.bot for the United States (1 line, also used by 1 other country).

## Sources and updates

The Harmonized System legal text comes from border.bot release 2 (edition HS 2022), imported from a file, and has been live since 11 October 2026.

This page was last updated on 11 October 2026.

Guidance from published tariff data, not a binding ruling. For a decision customs must follow, apply to the destination’s customs authority for a binding tariff ruling.

Machine-readable: https://border.bot/hs-codes/252310.json