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2513.10.00.80/Pumice for Foundry Core Sand Additive/Mexico

Pumice for Foundry Core Sand Additive from Mexico

Fine pumice added to foundry core sands improving permeability and reducing defects. Classified under HTS 2513.10.0080 as pumice stone natural abrasive. Enhances collapsibility for easier shakeout.

Duty Rate — Mexico → United States

10%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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Import Tips

• AFS Grain Fineness Number testing for foundry sand specifications

• Thermal analysis for core baking performance

• Avoid organic contaminants affecting binder curing