Harmonized System
U.S. imports of Industrial & Laboratory Electric Furnaces and Ovens (Other) (HS 851439) totaled $6.3M in August 2026, imported from 28 countries.
Importers of Industrial & Laboratory Electric Furnaces and Ovens (Other) paid $1.1M in duties in August 2026, an average duty rate of 17.19% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Industrial & Laboratory Electric Furnaces and Ovens (Other) imports of $6.3M in August 2026 ran 94% above the year-to-date monthly average of $3.2M.
Last updated: August 2026 dataServing sectors from semiconductor fabrication to advanced ceramics and heat treatment of metals, this residual heading captures industrial and laboratory electric furnaces and ovens not classified as electron beam, plasma, or vacuum arc types — including resistance, muffle, tube, and conveyor furnaces. A dedicated US tariff line (8514391000) covers units specifically for printed circuit board manufacturing, separating them from the broader 'not elsewhere specified' line (8514399000). China is the leading supplier, followed by Germany and South Korea, reflecting both high-volume commodity furnace production and precision equipment manufacturing. Imports from China may be subject to Section 301 tariffs, making origin and classification review a routine compliance step for buyers.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
111 import shipments a month
The printed circuit board line applies when the furnace is specifically designed or adapted for PCB manufacturing processes such as reflow soldering or curing of board substrates. A general-purpose laboratory muffle or tube furnace that could be used across multiple applications would typically fall under the NESOI line. The manufacturer's product specifications and intended-use documentation are the primary classification evidence.
Electric furnaces and ovens under heading 851439 sourced from China are subject to Section 301 tariffs. The applicable list and rate tier should be confirmed against the specific 10-digit HTS code at the time of entry, as exclusions and modifications have changed over time. A licensed customs broker can help identify whether any product-specific exclusions apply.
Subheading 3 of 8 in heading 8514
Subheading 851439 · $6.3M of $96.0M
Trade Directory
List your company under HS 851439 — Industrial & Laboratory Electric Furnaces and Ovens (Other), so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|---|
| 8514399000 | Industrial or Laboratory Furnaces and Ovens, NESOI | $5.8M | 17.22% | 98.78% | $1.0M |
| 8514391000 | Industrial/Lab Furnaces, Ovens for Manuf Print Cir | $455K | 16.78% | 75.51% | $76K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8514390000 | Industrial/Lab Electric Furnaces and Ovens, NESOI | $5.3M |
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
$6.3MYoY · free account
Exports
$5.3MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $32.8M of Industrial & Laboratory Electric Furnaces and Ovens (Other) and exported $30.0M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Germany and China together supply 77% of it. China pays 38.7% duty; Singapore 8.0%.
customs district
destination
entry
rate provision · imports
2.9% enters free of duty; duty collected equals 17.19% of imports for consumption.