HS Code for Iron slag

Iron slag is classified under HS code 261900. This code is part of Chapter 26, which covers ores, slag, and ash. Heading 2619 specifically applies to slag, dross (other than granulated slag), scalings, and other waste from the manufacture of iron or steel. Slag is a byproduct of the smelting process, formed when a flux (such as limestone) reacts with impurities in the iron ore. Dross and scalings refer to the oxidized waste that forms on the surface of molten metal or during the hot-rolling and forging of steel. The classification under 261900 is determined by the origin of the waste material. According to the HS Explanatory Notes, this heading includes products like "mill scale," which is rich in iron oxides and can be recycled back into the furnace. It also includes furnace waste that is not granulated. The classification process involves identifying that the material is a residue of the ferrous metallurgical process and not a prepared mineral product. While slag is often used in road construction or as a concrete aggregate, its classification remains in Chapter 26 as long as it is a raw waste product. This code is essential for environmental tracking and the circular economy, as it monitors the movement of industrial byproducts across borders.

Products Included

• Steelmaking slag (lump form)
• Blast furnace dross
• Mill scale (iron oxide scale)
• Hammer scale from forging
• Slag from electric arc furnaces

Common Misclassification

The most frequent misclassification is with HS code 261800, which is reserved exclusively for granulated slag (slag sand). Granulated slag is cooled quickly with water to create a glassy, sandy texture, whereas 261900 covers the heavier, lumpier, or flaky waste. Another error is using 2620, which covers slag and ash containing metals like lead or zinc; 261900 is strictly for residues from iron and steel production.

FAQ

What is the HS code for iron slag?

The HS code for non-granulated iron or steel slag and waste is 261900.

Is mill scale classified as an ore?

No, although it is rich in iron, mill scale is considered a waste product of the manufacturing process and is classified under 261900, not under iron ores (2601).