S-Glass Continuous Filament
High-strength S-glass continuous filaments for aerospace composite prepregs and ballistic applications. HTS 7019.90.51.50 covers these specialty glass fibers not qualifying as yarn or woven fabric. Higher silica content provides superior tensile strength over standard E-glass.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If sized for textile use and in yarn packages
Filaments specifically prepared as yarns for textile processing have distinct classification
If in rigid shaped articles combined with continuous binders
Shaped fiberglass products with continuous binders fall under Chapter 68 articles of stone
If qualifying as glass staple fibers
Short staple fibers have separate statistical reporting within other glass fibers
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Provide material safety data sheets confirming S-glass composition (65%+ SiO2)
• Aerospace customers often require lot traceability
• Segregate from E-glass shipments to avoid confusion
Related Products under HTS 7019.90.51.50
E-Glass Roving for Composites
Continuous E-glass fiber rovings used in manufacturing fiberglass reinforced plastics for boats and automotive parts. Classified under HTS 7019.90.51.50 as other glass fiber articles not specifically woven fabrics or yarn. Meets Chapter 70 definition for glass fibers with high silica content suitable for industrial reinforcement.
Chopped Strand Mat 450gsm
Non-woven mat of chopped E-glass strands (450 grams per square meter) used for hand lay-up in fiberglass molding. Falls under HTS 7019.90.51.50 as other glass fiber articles, specifically mats and felts not classified as woven fabrics. Common in marine and wind energy applications.
Surface Veil Mat 225gsm
Lightweight 225gsm glass fiber surface veil used as corrosion barrier and aesthetic finish in composite panels. Classified in HTS 7019.90.51.50 as other non-woven glass fiber articles. Provides resin-rich surface layer in pultrusion and RTM processes.
3K Carbon-Glass Hybrid Tow
Hybrid tow combining 3K carbon fiber with E-glass filaments for balanced strength/conductivity composites. HTS 7019.90.51.50 when glass component dominates classification as other glass fiber articles. Used in automotive lightning strike protection panels.
Milled Glass Fibers 1/32 inch
1/32-inch milled E-glass fibers used as filler in thermoset molding compounds and injection plastics. Classified under HTS 7019.90.51.50 as other glass fiber articles (not staple fibers). Improves impact resistance and dimensional stability.
Unidirectional Glass Prepreg Tape
Unidirectional E-glass fiber tape pre-impregnated with epoxy resin (35% RC). While resin-impregnated, classified under HTS 7019.90.51.50 when fibers remain principal article. Used in wind turbine blade spar caps.