SITCSection 5

Polyamide-6, -11, -12, -6,6, -6,9, -6,10 & -6,12 in Primary Forms

Name: Polyamide-6, -11, -12, -6,6, -6,9, -6,10 & -6,12 in Primary Forms (SITC 57531) -- U.S. Export Data
Creator: U.S. Census Bureau
License: https://www.census.gov/about/policies/open-gov/open-data.html

SITC 57531Basic heading5-digit

U.S. imports · July 2026: $39.4M; YTD $257.8M

U.S. exports · July 2026: $138.8M

Balance · July 2026: Sign in free to see the trade balance

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Balance · July 2026: Loading the trade balance

U.S. exports of polyamide-6, -11, -12, -6,6, -6,9, -6,10 & -6,12 in primary forms (SITC 57531) totaled $138.8M in July 2026.

Importers of Polyamide-6, -11, -12, -6,6, -6,9, -6,10 & -6,12 in Primary Forms paid $2.0M in duties in July 2026 — an effective duty rate of 7.9% on $25.0M in dutiable value, based on actual customs collections rather than the published tariff schedule.

Last updated: July 2026 data

Nylon engineering resins — including the widely used PA-6 and PA-6,6 grades — are foundational inputs for automotive components, electrical connectors, industrial fibers, and consumer goods. Each numeric suffix denotes a distinct monomer chain length and property profile: PA-6,6 offers higher melting points suited to under-hood automotive parts, while PA-12 provides flexibility and chemical resistance for fuel lines and tubing. Importers should verify whether specific grades are subject to Section 301 tariffs, as classification can hinge on molecular weight and form (pellet, powder, flake) declared at entry.

AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.

879 shipments/mo

12-month trend

ImportsExports

Imports

$39.4MYoY · Pro

Exports

$138.8MYoY · Pro

12-mo low · imports

YoY · Pro

$138.8M$0

June 2025December 2025July 2026

Through July 2026. Source: U.S. Census Bureau.

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Basic heading 98 of 465 in section 5

Share of section 5 imports0.14%

Basic heading 57531 · $39.4M of $28.9B

Where it comes from, where it lands, what it pays

Exports · July 2026

Countries

destination

Mexico and Vietnam together take 42% of it.

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Districts

customs district

Census does not publish district detail for this classification system.

States

origin

Census does not publish state detail for this classification system.

Ports

entry

Census does not publish port detail for this classification system.

Frequently Asked Questions

How do customs authorities distinguish between PA-6 and PA-6,6 at the border?

Classification typically relies on the declared monomer composition and the manufacturer's technical data sheet. PA-6 is derived from caprolactam, while PA-6,6 is produced from hexamethylenediamine and adipic acid; these differences in feedstock and melting point are the key distinguishing criteria examiners use.

Are any polyamide grades in this heading subject to trade-remedy measures?

Certain polyamide resins originating from specific countries may be subject to Section 301 tariffs. Importers should confirm the applicable tariff action for the specific grade and country of origin with a licensed customs broker before shipment.