HS Code for Foundry binders

Foundry binders are classified under HS code 3824.10. These are prepared chemical products used in the metal casting industry to bind sand grains together to form moulds and cores. This classification falls under Chapter 38, which covers miscellaneous chemical products, and Heading 3824, which is a broad category for chemical products and preparations not elsewhere specified. Subheading 3824.10 is a specific provision for prepared binders for foundry moulds or cores. The classification is based on the fact that these products are "preparations"—mixtures of various chemical substances (such as resins, catalysts, and additives) formulated for a specific industrial function. Because they are ready-to-use or specifically formulated for the foundry process, they are moved from the general chemical headings of Chapter 28 or 29 into this functional heading in Chapter 38.

Products Included

• Core binders based on synthetic resins
• Bentonite-based prepared foundry binders
• Sodium silicate binders prepared for foundry use
• Phenolic resin binders for sand casting
• Furan resin binders
• Oil-based foundry binders

Common Misclassification

Foundry binders are often misclassified under HS code 3907 or 3909 if they are based on synthetic resins like phenolics or epoxies. However, Chapter 39 Note 2(d) generally excludes preparations specifically formulated for use as foundry binders, directing them to 3824.10. They may also be confused with 3824.99 (other chemical products), but since 3824.10 is a specific named subheading for foundry binders, it must be used according to the principle of specificity in GIR 3(a).

FAQ

What is the HS code for sand casting resin?

If the resin is a prepared binder for foundry use, the HS code is 3824.10.

Are inorganic binders also classified here?

Yes, as long as they are prepared binders specifically for foundry moulds or cores, both organic and inorganic formulations fall under 3824.10.