Semiconductor Wafer Lapping Plate
A cast iron lapping plate used in wafer grinders and lappers of heading 84.65, providing a flat reference surface for bringing silicon wafers to critical thickness tolerances before polishing. Designed for loose abrasive slurry processes, this plate ensures uniform material removal. It falls under tariff item 8466.92.00 as a part or accessory for machines of heading 84.65.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the lapping plate is part of a machine for manufacturing semiconductor wafers
Machines for the manufacture of semiconductor devices are classified under heading 84.86.
If the plate is a grindstone or similar abrasive article of natural or artificial stone
Millstones, grindstones and similar articles of agglomerated abrasives are classified in Chapter 68.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Declare the lapping plate as a part of a wafer lapping machine and be ready to specify the machine model it is designed for
• If the plate is made of cast iron, ensure it is not classified as a general article of base metal under Section XV
Related Products under Tariff item 8466.92.00
Boule Flat Grinder Diamond Dresser
An automated diamond dresser for crystal boule flat grinders, conditioning the grinding wheel to precise angles indicating crystal orientation. It is critical for semiconductor industry standards. This dresser is an accessory for machines of heading 84.65, specifically crystal grinders.
Cast Iron Bed Frame for Wafer Grinder
A rough cast iron bed frame for wafer grinding machines, processed only by cleaning and minimal machining to eliminate casting defects and enable finishing machine alignment. It is essential for maintaining the structural integrity and precision of the grinding machine, which falls under heading 8465 as machinery for working semiconductor materials.
Cast Iron Column for Wafer Slicing Saw
A rough-machined cast iron vertical column for wafer slicing saws, cleaned of sprues and fins with locator machining only. It supports precise blade movement for slicing semiconductor boules into wafers, a key function of machines under heading 8465.
Cast Iron Foot Bracket for Crystal Grinder
A semi-finished cast iron foot bracket for crystal grinders in wafer preparation equipment, with risers removed and locator faces machined. It ensures machine stability during boule diameter grinding, a process performed by machines of heading 8465.
Cast Iron Headstock Casting for Lapper Machine
A basic cleaned and de-finned cast iron headstock for wafer lapping machines, machined solely for finishing alignment. It is critical for surface flatness in semiconductor wafer preparation, a function of machines under heading 8465.
Cast Iron Machine Base for CNC Lathe
A rough-machined cast iron base designed for mounting CNC lathes of heading 8465, cleaned and machined only to remove casting fins, gates, sprues, and risers for precise location in finishing machinery. This part provides a stable foundation for the lathe's operation.