High-Purity Lump Natural Graphite
Purified natural graphite lumps >99% carbon for semiconductor applications. Remains under HTS 2504.90.00.00 as unworked 'other' natural graphite.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sublimed or vapor-deposited
Carbon in sublimed forms (fullerenes, vapor grown) classifies under pure carbon heading.
If refractory shaped articles
Graphite refractories fall under Chapter 69.
If wound into electrical resistors
Electrical resistors of graphite are Chapter 85 products.
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Import Tips & Compliance
• Ash content <50ppm certification mandatory for high-purity claims
• Clean room packaging required to maintain purity during transit
• End-use statements may trigger Section 232 national security reviews
Related Products under HTS 2504.90.00.00
Natural Flake Graphite Powder
Fine powder derived from natural flake graphite, used in lubricants, pencils, and refractories. Classified under HTS 2504.90.00.00 as 'other' natural graphite, distinct from powdered (2504.10) or lumps (2504.90 but specified as other forms).
Amorphous Natural Graphite Lumps
Irregular lumps of amorphous (microcrystalline) natural graphite mined from metamorphic deposits. Falls under HTS 2504.90.00.00 as 'other' natural graphite not in powder or flake form.
Vein Natural Graphite Crystals
Large crystalline vein graphite chunks, a high-purity form from Sri Lankan deposits. HTS 2504.90.00.00 covers this 'other' natural graphite variety not powdered or in lumps.
Natural Graphite Ore Concentrate
Flotation-concentrated natural graphite ore at 85-90% carbon content, unsintered. Classified in HTS 2504.90.00.00 as 'other' processed natural graphite.
Micronized Natural Graphite Flakes
Delicately milled natural graphite flakes reduced to 5-10 micron size, retaining flake morphology. HTS 2504.90.00.00 as 'other' not meeting powder definition.
Natural Graphite Block Scrap
Recovered scrap blocks from natural graphite machining, clean and unsintered. HTS 2504.90.00.00 for 'other' natural graphite forms.