HS Code for Slag wool

Slag wool is classified under HS code 6806.10. This material is a type of mineral wool produced by melting blast furnace slag and other raw materials, then spinning or blowing the melt into fine fibers. It is primarily used for thermal and acoustic insulation. Chapter 68 covers articles of stone, plaster, cement, and similar mineral materials. Heading 6806 specifically includes slag wool, rock wool, and similar mineral wools, even if they are mixed together. These products are often imported in bulk, or as batts, sheets, and rolls. The classification 6806.10 is specific to these mineral wools, distinguishing them from organic insulation materials or glass-based fibers. The essential character of the product is its mineral fiber composition and its intended use as an insulant. Slag wool is valued for its high melting point and fire-resistant properties, making it a staple in industrial and residential fireproofing. The HS code applies regardless of whether the wool is in its raw fibrous state or has been formed into specific shapes like pipe insulation or ceiling tiles.

Products Included

• Slag wool in bulk fibers
• Slag wool insulation batts
• Rock wool and slag wool mixtures
• Mineral wool acoustic ceiling tiles
• Fire-resistant slag wool blankets

Common Misclassification

Slag wool is frequently misclassified under HS code 7019.39, which covers glass wool and articles thereof. While glass wool and slag wool look similar, they are chemically distinct; glass wool is made from silica sand and recycled glass, while slag wool is made from industrial slag. Another common error is using HS code 6806.90, which is for "other" mineral materials like exfoliated vermiculite or expanded clays. Slag wool must be classified under the specific 6806.10 subheading. Additionally, if the slag wool is combined with bitumen or other materials to the point where it becomes a different article (like a roofing felt), it might move to Chapter 48 or 68.07.

FAQ

What is the HS code for slag wool?

Slag wool is classified under HS code 6806.10, which covers slag wool, rock wool, and similar mineral wools.

Is slag wool the same as rock wool for customs purposes?

Yes, both slag wool and rock wool are grouped together under the same HS subheading 6806.10 due to their similar mineral fiber nature.