Chrysotile Milled Fiber Grade 4
Finely milled chrysotile asbestos fibers classified as group 4 grade, processed by grinding into short, fibrous particles for reinforcement applications. These fibers fall under HTS 2524.90.0045 as milled fibers of chrysotile asbestos in group 4 and 5 grades, distinct from crude or flock forms. Used primarily in industrial composites requiring fine dispersion.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If group 1, 2 or 3 grades
Coarser milled chrysotile fibers fall under the preceding statistical suffix within the same chrysotile heading.
If incorporated into woven fabric or yarn
Asbestos processed into textile forms like cloth or rope shifts to Chapter 68 for worked mineral products.
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Import Tips & Compliance
• Obtain EPA TSCA certification and comply with asbestos import bans or restrictions under 40 CFR Part 763
• Provide mill test reports confirming group 4 grade (fiber length/thickness specs) and chrysotile composition to avoid misclassification
• Declare as hazardous material; common pitfall is failing to specify 'milled fibers' vs. crude, leading to wrong subheading
Related Products under HTS 2524.90.00.45
Group 5 Grade Chrysotile Milled Asbestos Fiber
Ultra-fine milled chrysotile asbestos fibers in group 5 grade, optimized for high-dispersion applications in friction materials. Classified under HTS 2524.90.0045 due to specific milling to group 4/5 standards as defined in tariff statistical notes. Essential for brake linings and gaskets.
Grade 4/5 Milled Asbestos for Friction Compounds
Specialty milled chrysotile fibers blending group 4 and 5 grades for automotive friction compounds like brake shoes. Falls under HTS 2524.90.0045 as defined for these precise milled chrysotile categories. Fine particle size ensures uniform mixing.
High-Purity Group 5 Chrysotile Milled Fiber
High-purity group 5 grade milled chrysotile asbestos fibers for specialty gaskets and seals. Classified in HTS 2524.90.0045 for chrysotile milled fibers meeting group 4/5 milling tolerances. Ultra-fine for maximum reinforcement.
Industrial Grade 4 Milled Chrysotile Fibers
Milled chrysotile asbestos fibers of group 4 grade, produced by dry milling for use in cement reinforcement and roofing compounds. HTS 2524.90.0045 applies specifically to these finer milled variants of chrysotile asbestos, excluding coarser groups or other forms. Provides thermal stability in composites.