Tungsten carbide (WC)

CAS 12070-12-1

U.S. production volumes are classified as confidential business information.

US productionCBI

Confidential Business Information. The EPA withholds this volume because publishing it could reveal the reporting company's trade secrets.

Import value, 2024$149M

Top sourceChina 41%

At least one company claimed its 2023 production or import volume for this chemical as confidential, so EPA withholds it.

Why supply is unknown

Production is reported production, not a complete census of factories. US production volume is confidential. Production reporting year: 2023. Import value and source-country shares describe a shared customs category, not a separate chemical measurement.

Where It Comes From

Customs basis: HS 284990 · basket

EPA reports by year

2023: US production Confidential · Imports Confidential
2019: US production Confidential · Imports Confidential

These shares come from HS customs code 284990, which covers 11 tracked chemicals in total. They estimate the category's origin mix, not this chemical specifically.

Source Countries

Country of origin for US imports, from Census customs data (2024).

CN 41%ChinaZA 23%South AfricaAT 14%AustriaCA 8%CanadaDE 7%Germany

Italy
India
Japan
Hong Kong
South Korea
Mexico
Ukraine
United Kingdom
Vietnam
Brazil
Bulgaria
Luxembourg
Czech Republic
Norway
Turkey
Slovenia

EPA-registered manufacturers (4)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Global Tungsten &Amp; Powders

Kennametal

Pyrotek

Sandvik

EPA-registered importers (2)

Companies that report making or importing this chemical to the EPA. Registration is US-centric and does not indicate import origin.

Sandvik Ab · SE Sweden

Sandvik Machining Solutions Usa

Why It Matters

Sectors

EnergyMetals & Mining

Downstream UsesNot recorded

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Industrial Uses

Used in 2 sectors as 2 functional roles.

•Alloys in Machinery Manufacturing (100%)Processing—incorporation into article
•Alloys in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product
•Intermediate in Primary Metal Manufacturing (100%)Processing—incorporation into formulation, mixture, or reaction product

Chemical Identity

CAS12070-12-1

PubChem CID25504

DTXSIDDTXSID4029305

FormulaCW-

Mol. Weight195.85 g/mol

SMILES[C-]#[W]

Data Sources

EPA CompTox (DSSTox) · DTXSID4029305Retrieved 2026-04-06
PubChem · compound 25504Retrieved 2026-04-06
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
EPA Chemical Data ReportingReporting year: 2023 · Retrieved 2026-10-04
US Census international tradeReporting year: 2024 · Retrieved 2026-10-04

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Brief citations

Tungsten carbide (WC) (CAS 12070-12-1) https://chemicalindependence.com/chemical/12070-12-1/ EPA CompTox (DSSTox): DTXSID4029305. Retrieved 2026-04-06. https://comptox.epa.gov/dashboard/chemical/details/DTXSID4029305 PubChem: 25504. Retrieved 2026-04-06. https://pubchem.ncbi.nlm.nih.gov/compound/25504 EPA Chemical Data Reporting: 12070-12-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting EPA Chemical Data Reporting: CAS 12070-12-1. Reporting year: 2023. https://www.epa.gov/chemical-data-reporting US Census international trade: HS 284990 for CAS 12070-12-1. Reporting year: 2024. https://usatrade.census.gov/