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HSChapter 85
U.S. imports of industrial & laboratory electric furnaces and ovens (other) (HS 851439) totaled $2.0M in April 2026, traded with 20 countries.
Importers of Industrial & Laboratory Electric Furnaces and Ovens (Other) paid $309K in duties in April 2026 — an effective duty rate of 19% on $1.6M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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.
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Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 8514399000 | INDUSTRIAL OR LABORATORY FURNACES AND OVENS, NESOI | $1.5M | 18.25% | $270K |
| 8514391000 | INDUSTRIAL/LAB FURNACES, OVENS FOR MANUF PRINT CIR | $454K | 25.24% | $39K |
INDUSTRIAL OR LABORATORY FURNACES AND OVENS, NESOI
INDUSTRIAL/LAB FURNACES, OVENS FOR MANUF PRINT CIR
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 8514390000 | INDUSTRIAL/LAB ELECTRIC FURNACES AND OVENS, NESOI | $1.7M |
INDUSTRIAL/LAB ELECTRIC FURNACES AND OVENS, NESOI
191 no
MACH FOR RECP/CONVR/TRANS/REGN OF VOICE/IMAGE/DATA
HS 851762
SOLID-STATE NON-VOL SEMICONDUCTOR STORAGE DEVICES
HS 852351
SMARTPHONES
HS 851713
PROCESSORS AND CONTROLLERS, ELECTRONIC INTEG CIRCT
HS 854231
CONTROLS ETC W ELECT APPR F ELECT CONT NOV 1000 V
HS 853710
STATIC CONVERTERS; ADP POWER SUPPLIES
HS 850440
| Country | Imports | Exports | Balance |
|---|---|---|---|
| MEXICO | $45K | $836K | +$791K |
| GERMANY | $412K | $251K | -$161K |
| CHINA | $509K | -- | -$509K |
| KOREA, SOUTH | $373K | $61K | -$312K |
| ITALY | $268K | -- | -$268K |
| State | Imports | Exports | Balance |
|---|---|---|---|
| California | $873K | $233K | -$640K |
| Texas | $455K | $289K | -$166K |
| Massachusetts | $3K | $313K | +$310K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LAREDO, TX | -- | $485K | +$485K |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $315K | $88K | -$227K |
| OAKLAND, CA | $322K | $57K | -$265K |