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U.S. imports of carbonized wool, not carded or combed (HS 510130) totaled $152K in July 2026, traded with 10 countries.
Importers of Carbonized Wool, Not Carded or Combed paid $15K in duties in July 2026 — an effective duty rate of 9.9% on $151K in dutiable value, based on actual customs collections rather than the published tariff schedule. Carbonized Wool, Not Carded or Combed imports of $152K in July 2026 ran 218% above the year-to-date monthly average of $48K.
Last updated: July 2026 dataCarbonization — treating wool with sulfuric acid or similar agents to destroy embedded vegetable matter — is the defining processing step that places raw wool in this heading rather than the greasy or scoured headings. Australia leads US imports, with China and the United Kingdom also supplying carbonized wool. The four 10-digit lines distinguish wool that has received no processing beyond carbonization (5101304000) from further-processed or finer-grade material, with fineness thresholds at 40S. Carbonized wool is a key input for woolen (as opposed to worsted) spinning systems, where vegetable contamination would otherwise degrade yarn quality.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
10 shipments/mo
Yes — carbonization is often performed on scoured wool. When both processes have been applied, heading 510130 governs, because carbonization is the more specific processing criterion. The degreased headings (510121 and 510129) explicitly exclude carbonized wool, so the presence of carbonization always directs classification to 510130.
Line 5101304000 covers wool that has been carbonized and received no further processing beyond that step. Lines 5101306500 and 5101307000 apply to carbonized wool that has undergone additional processing: 5101306500 is limited to wool not finer than 40S, while 5101307000 is the general residual for other carbonized wool. The processing history and fineness grade together determine which line applies.
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 5101304000 | Wool, Nt Cd R Cm: Crbnzd: Nt Process Beyond Crbnzd | $148K | 10.00% | 100.00% | $15K |
| 5101306500 | Wool, Not Cd/Cm:carbonized:other:nt Finer Than 4os | $2K | 2.28% | 81.75% | $52 |
| 5101307000 | Wool, Not Carded or Combed: Carbonized: Other | $1K | 12.01% | 100.00% | $154 |
Subheading 2 of 5 in heading 5101
Subheading 510130 · $152K of $692K
ImportsExports
Imports
$152KYoY · Pro
Exports
$0YoY · Pro
12-mo low · imports
YoY · ProFewer than 6 of the last 12 months reported trade above $500K; the trend chart is not shown for thin series.
Through July 2026. Source: U.S. Census Bureau.
Imports · July 2026
origin
Australia and Nepal together supply 99% of it.
customs district
destination
entry
rate provision · imports
0.3% enters free of duty; the effective duty rate is 9.90%.