HS Code for Polyester blend yarn

Polyester blend yarn is classified under HS code 5509.59 when it is a yarn of polyester staple fibers mixed with fibers other than artificial staple fibers, wool, or cotton. This is a residual or "basket" category within heading 5509. Under the Harmonized System, yarn classification is highly specific regarding the blending components. If the yarn is predominantly polyester staple fiber by weight, but the secondary fiber is something like silk, flax, hemp, or a specialty synthetic fiber not covered by subheadings 5509.51 through 5509.53, it falls here. This code applies to yarn not put up for retail sale, typically used in industrial textile manufacturing. The fibers must be staple (discontinuous) fibers that have been spun together to form the yarn.

Products Included

• Polyester staple yarn mixed with silk fibers
• Polyester staple yarn mixed with flax or linen
• Polyester staple yarn mixed with specialty animal hair (not wool)
• Blended yarns of polyester staple and miscellaneous synthetic fibers

Common Misclassification

This code is often confused with 5509.51 (blends with artificial fibers), 5509.52 (blends with wool/fine animal hair), or 5509.53 (blends with cotton). Importers must have a precise percentage breakdown of the fiber content to avoid using 5509.59 incorrectly. It is also distinct from 5511, which is for yarn put up for retail sale, and 5402, which is for filament-based yarns.

FAQ

What is the HS code for polyester and silk blend yarn?

Yarn made predominantly of polyester staple fibers mixed with silk is classified under HS code 5509.59.

Does this code apply to 100% polyester yarn?

No, 100% polyester staple yarn is classified under 5509.21 (single yarn) or 5509.22 (multiple/cabled yarn). 5509.59 requires a blend with "other" fibers.