What types of clays are covered under HS-4 2508?

HS-4 2508 covers various clays including bentonite, fireclay, mullite, and andalusite, among others.

How do I know if my clay is calcined?

Calcined clay has been heated to remove moisture and improve properties. Check your supplier's specifications for details.

Can I use HS-6 250840 for unique clay types?

Yes, HS-6 250840 is for clays not specifically classified elsewhere in heading 2508.

What is the significance of the 'n.e.c.' in HS-6 250840?

'N.e.c.' stands for 'not elsewhere classified', meaning it includes clays that don’t fit into other specific categories.

Is there a specific code for chamotte?

Yes, chamotte is classified under HS-6 250870.

What should I do if I’m unsure about the classification?

Consult with a customs broker or refer to customs rulings for guidance on proper classification.

Are there any specific import regulations for clays?

Yes, check with your local customs authority for any specific import regulations or restrictions on clays.

HS-4 · Heading

2508 — Clays; (not including expanded clays of heading no. 6806), andalusite kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earth

Chapter 25: Salt; sulphur; earths and stone

Plain-language overview

Use HS-4 2508 when importing clays, such as bentonite or fireclay, whether calcined or not. For example, if you're bringing in a shipment of bentonite clay for use in drilling mud, this heading applies.

To differentiate between the HS-6 lines, consider the specific type of clay. For instance, HS-6 250810 covers bentonite, while HS-6 250830 is for fireclay. If your product is a calcined fireclay, you would classify it under 250830.

If your clay does not fit neatly into the bentonite or fireclay categories, you might look at HS-6 250840, which includes other clays not specifically mentioned elsewhere. This could apply to a unique clay type you’re importing that doesn’t have its own classification.

For specialized clays like andalusite or kyanite, use HS-6 250850. If your shipment consists of mullite, then HS-6 250860 is the correct choice. Always ensure to verify the specific properties of your clay to select the appropriate line.

Keywords & topics

Short phrases that describe this HS-4 heading when you're searching or filtering schedules.

bentonite clay · fireclay · calcined clays · mullite · andalusite · kyanite · sillimanite · chamotte · dinas earth · HS-4 2508 · HS-6 classifications · importing clays · clay types · refractory materials · industrial clays

Examples

Drawn from the official tariff wording for this HS-4 heading. Always confirm against your published schedule and legal notes.

Bentonite clay for drilling applications
Fireclay used in refractory materials
Mullite for ceramic manufacturing
Andalusite for high-temperature applications
Chamotte used in kiln linings
Calcined fireclay for construction
Specialty clays for industrial processes

Common questions

How people often phrase their search when they're trying to classify goods like yours.

What is HS-4 2508 used for?
How to classify bentonite clay?
What are the differences between fireclay and other clays?
Is calcined clay covered under HS-4 2508?
What is the correct HS-6 code for mullite?
How to import and classify chamotte earth?
What types of clays are included in HS-4 2508?

Questions & answers

For orientation only—the binding text is your national tariff and the WCO nomenclature your country uses.

What types of clays are covered under HS-4 2508?: HS-4 2508 covers various clays including bentonite, fireclay, mullite, and andalusite, among others.
How do I know if my clay is calcined?: Calcined clay has been heated to remove moisture and improve properties. Check your supplier's specifications for details.
Can I use HS-6 250840 for unique clay types?: Yes, HS-6 250840 is for clays not specifically classified elsewhere in heading 2508.
What is the significance of the 'n.e.c.' in HS-6 250840?: 'N.e.c.' stands for 'not elsewhere classified', meaning it includes clays that don’t fit into other specific categories.
Is there a specific code for chamotte?: Yes, chamotte is classified under HS-6 250870.
What should I do if I’m unsure about the classification?: Consult with a customs broker or refer to customs rulings for guidance on proper classification.
Are there any specific import regulations for clays?: Yes, check with your local customs authority for any specific import regulations or restrictions on clays.

Continue classification

Parent context

HS code directory Chapter 25

Nearby siblings

Previous HS-4 2507 Next HS-4 2509

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Heading-browse mode uses HS-6 250800 (first line of this block).

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HS-6 subheadings (6)

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