HS Code for Core binders

Core binders used in industrial foundry applications are classified under HS code 3824.10. This classification is situated within Chapter 38, which encompasses miscellaneous chemical products. Heading 3824 is a broad category for chemical products and preparations of the chemical or allied industries that are not specified elsewhere in the nomenclature. Subheading 3824.10 is specifically reserved for "Prepared binders for foundry moulds or cores." These substances are essential in the metal casting process, acting as the adhesive agent that holds sand or other refractory materials together to create the internal shapes (cores) and external forms (moulds). The classification depends on the product being a "prepared" mixture, meaning it has been formulated specifically for foundry use. This includes a wide range of chemical bases, from synthetic resins to specialized oil-based preparations, provided they are intended for the binding of foundry sand.

Products Included

• Resin-based foundry core binders
• Urea-formaldehyde core resins
• Phenolic thermal-set binders
• Sodium silicate binders for foundry use
• Oil-based sand binders for metal casting

Common Misclassification

Core binders are often confused with HS code 3506, which covers prepared glues and other prepared adhesives. While binders do have adhesive properties, the specific industrial application for foundries dictated by 3824.10 takes precedence over the general adhesive heading. Another common error is using HS code 3806, which covers rosin and resin acids; while these may be ingredients in a binder, the finished preparation must be classified under the more specific 3824.10 code.

FAQ

What is the HS code for core binders?

The HS code for prepared core binders used in foundry moulds or cores is 3824.10.

Does this code include inorganic binders?

Yes, HS code 3824.10 includes both organic and inorganic prepared binders, such as those based on silicates or specialized clays, as long as they are prepared for foundry use.