Czochralski Crystal Puller Heater Element
A graphite or molybdenum heater element designed specifically for use in Czochralski crystal pullers under HTS 8426.11, used to melt polysilicon for growing monocrystalline silicon boules. It falls under 8431.49.1010 as a part solely for semiconductor wafer manufacturing machinery of subheading 8426.11.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If made principally of graphite without machine-specific design
Graphite articles not customized as machinery parts classify under Chapter 68 for non-specific shapes.
If classified as part of heating apparatus rather than mechanical machinery
Electric heaters for general industrial furnaces fall under 8516, not mechanical handling machinery parts.
If for interchangeable use in multiple machinery types beyond 8426
Machinery parts not solely for specific headings go to residual 8487.
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Import Tips & Compliance
• Verify part is exclusively for 8426.11 machinery via manufacturer specs to avoid reclassification to general parts
• Include detailed engineering drawings and end-use statements in documentation for CBP review
Related Products under HTS 8431.49.10.10
Crystal Puller Seed Holder Chuck
Rotating graphite or molybdenum chuck that precisely grips silicon seed crystal during Czochralski pulling in 8426.11 pullers. Critical growth interface part for 8431.49.1010.
Float Zone Crystal Grower RF Coil
Radio frequency induction coil for float zone crystal growers (8426.11) that melts silicon rods without crucibles to produce high-purity monocrystalline ingots for wafers. Classified in 8431.49.1010 as a principal part dedicated to semiconductor processing equipment.
Wafer Lapping Machine Conditioning Ring
Cast iron or composite conditioning ring for wafer lappers (8426.30) that dresses the lapping plate surface for flatness control in semiconductor wafer preparation. Specific to machinery in 8426.11/19/30 subheadings, hence 8431.49.1010.
Crystal Grinder Flattening Fixture
Custom precision fixture that holds crystal boules for grinding orientation flats indicating conductivity type in 8426.30 equipment. Semiconductor-specific part for 8431.49.1010 classification.
Wafer Polishing Pad Conditioner Disk
Diamond-embedded conditioner disk for dressing chemical mechanical polishing pads on wafer polishers (8426.30). Essential maintenance part solely for semiconductor wafer finishing machinery under 8431.49.1010.
Float Zone Furnace Quartz Crucible Holder
Although float zone is crucible-less, this precision quartz holder supports seed/feed rods in RF furnaces (8426.11) for stable zone melting. Part for semiconductor crystal growth equipment under 8431.49.1010.