Harmonized System
U.S. imports of High-Tenacity Viscose Rayon Filament Yarn (HS 540310) totaled $299K in August 2026, imported from 5 countries.
Importers of High-Tenacity Viscose Rayon Filament Yarn paid $30K in duties in August 2026, an average duty rate of 10.00% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. High-Tenacity Viscose Rayon Filament Yarn imports of $299K in August 2026 ran 36% below the year-to-date monthly average of $464K.
Last updated: August 2026 dataHigh-tenacity viscose rayon yarn is engineered for reinforcement applications — tire cord, industrial hose, and conveyor belting — where tensile strength requirements exceed those of standard textile-grade rayon. The US schedule subdivides this heading by construction and twist level: monofilament/multifilament untwisted or twisted below 5 turns/meter (5403103020), at or above 5 turns/meter (5403103040), and multiple or cabled constructions (5403106000). Germany and Italy are the leading sources, reflecting the concentration of industrial rayon production in European specialty chemical groups. Importers should note that high-tenacity rayon for tire cord may require additional documentation to distinguish it from lower-grade viscose yarn at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3 import shipments a month
CBP and the HTS use tenacity thresholds defined in the chapter notes — high-tenacity yarn must meet a minimum breaking tenacity (measured in cN/tex) specified for viscose rayon. Mill test certificates showing tenacity values are the primary supporting document; yarn that does not meet the threshold falls under the single-yarn subheadings in heading 5403.31 instead.
Production of high-tenacity rayon requires specialized continuous-filament spinning lines and proprietary wet-spinning chemistry that only a handful of European chemical-fiber groups operate at commercial scale. This concentration means US buyers face limited alternative sources, making supply-chain disruptions — such as plant maintenance shutdowns — a meaningful procurement risk.
Subheading 3 of 8 in heading 5403
Subheading 540310 · $299K of $11.5M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5403103040 | Visc Yn Hi Tncty Mono/Multiflmnt Unt/Tw Gt=5 Trn/M | $299K | 10.00% | 100.00% | $30K |
| 5403103020 | Visc Yn Hi Tncty Mono/Multiflmnt Unt/Tw Lt 5 Trn/M | — | -- | -- | -- |
| 5403106000 | Viscose Rayon Hi Tencity Multiple/Cabled Nt Retail | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 5403100000 | Art Fil Yn Ex Sew No Ret Hi Ten Visc Rayon | $62K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
ImportsExports
Imports
$299KYoY · free account
Exports
$62KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $5.7M of High-Tenacity Viscose Rayon Filament Yarn and exported $2.1M.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
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Imports · August 2026
origin
Germany and Czech Republic together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 10.00% of imports for consumption.