U.S. imports of Uncoated Wire of Iron or Nonalloy Steel (HS 721710) totaled $15.5M in August 2026, imported from 32 countries.
Importers of Uncoated Wire of Iron or Nonalloy Steel paid $6.4M in duties in August 2026, an average duty rate of 46.57% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataCarbon content and diameter are the twin classification axes for uncoated iron and nonalloy steel wire, with the US schedule subdividing this heading into more than twenty 10-digit lines distinguishing flat versus round cross-section, low-carbon (under 0.25%) versus medium- and high-carbon grades, and heat-treated versus non-heat-treated condition. These distinctions matter commercially because high-carbon wire feeds spring, tire cord, and prestressed concrete strand production, while low-carbon wire serves welding, mesh, and general fabrication uses. Mexico and Canada are the leading import sources, with South Korea also a significant supplier.
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1.0K import shipments a month
Heat treatment — typically patenting or annealing — alters the mechanical properties of wire and is commercially significant for downstream processors. The US tariff schedule uses heat-treated versus non-heat-treated as a classification criterion within several carbon-content and diameter brackets, so importers must confirm the thermal processing history with the mill to select the correct 10-digit line.
Flat wire has a rectangular or near-rectangular cross-section, while round wire has a circular cross-section. The distinction is based on the actual cross-sectional geometry of the finished wire as drawn, not the shape of the original rod. Mill certificates typically specify cross-section geometry; when the shape is ambiguous, a customs broker or CBP ruling request can provide classification certainty.
Subheading 1 of 4 in heading 7217
Subheading 721710 · $15.5M of $36.0M
Trade Directory
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
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.
Imports · August 2026
origin
Canada and Mexico together supply 52% of it. China pays 66.3% duty; Canada 39.5%.
customs district
destination
entry
rate provision · imports
3.7% enters free of duty; duty collected equals 46.57% of imports for consumption.
ImportsExports
Imports
$15.5MYoY · free account
Exports
$5.6MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $170.9M of Uncoated Wire of Iron or Nonalloy Steel and exported $64.2M.
Through August 2026. Source: U.S. Census Bureau.