Foamed Slag Lightweight Fill
Coarse foamed slag granules serve as lightweight fill material in civil engineering projects like road bases. HTS 6806.20.00.00 covers these expanded mineral products for structural insulation. Reduces overall project weight significantly.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If other metallurgical slags unfoamed
Non-expanded slags classify as Chapter 26 waste residues.
If pebbled natural stone
Pebble aggregates without slag foaming process go to Chapter 25.
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Import Tips & Compliance
• Include bulk density test results (typically <1000 kg/m³) proving expansion
• Declare for specific end-use like 'road embankment fill' to aid valuation
• Use open-top containers for large volume shipments to minimize costs
Related Products under HTS 6806.20.00.00
Exfoliated Vermiculite Insulation
Exfoliated vermiculite is a lightweight, expanded form of the mineral vermiculite heated to create airy layers for superior thermal insulation. It falls under HTS 6806.20.00.00 as an exfoliated mineral material used in construction and gardening for heat and sound insulation. This product is expanded through thermal processing, distinguishing it from raw minerals.
Expanded Clay Pebbles (LECA)
Lightweight Expanded Clay Aggregate (LECA) consists of clay pellets expanded at high temperatures for use in hydroponics and drainage. Classified under HTS 6806.20.00.00 due to its foamed, expanded mineral structure providing insulation and lightweight fill. Ideal for soil aeration and aquaponic systems.
Foamed Slag Aggregate
Foamed slag is produced by expanding blast furnace slag with air or steam for use as lightweight concrete aggregate. It matches HTS 6806.20.00.00 as a similar expanded mineral material for construction insulation and sound absorption. Provides thermal properties in building fills.
Vermiculite-Expanded Clay Mix
A premixed intermixture of exfoliated vermiculite and expanded clay for horticultural potting media and insulation fills. Covered by HTS 6806.20.00.00 explicitly including intermixtures of expanded mineral materials. Offers balanced drainage and insulation properties.
Perlite-Vermiculite Insulation Blend
Expanded perlite mixed with exfoliated vermiculite creates a high-performance loose-fill insulation for attics and walls. Falls under HTS 6806.20.00.00 as intermixtures of similar expanded mineral materials (noting perlite expansion aligns). Excellent for sound and heat insulation.
Hydroton Expanded Clay Balls
Hydroton brand expanded clay balls are spherical lightweight aggregates for hydroponic growing systems. Classified in HTS 6806.20.00.00 as expanded clays used in inert media applications. Reusable and pH neutral for plant root support.