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Grade: Glass Fiber Reinforced - 30%
Composition: PBT - 30% GFR
Form: Rod
Material: Polybutylene terephthalate (PBT)
Commodity: Polymers

30% Glass Fiber Reinforced PBT Rod

30% Glass Fiber Reinforced PBT Rod merges the inherent strength, chemical resistance, and dimensional stability of polybutylene terephthalate with the rigidity, stiffness, and load-bearing capacity imparted by short glass fibers. At this reinforcement level, the material exhibits significant improvements in tensile and flexural strength, reduced warpage, and enhanced heat deflection temperature, making it ideal for precision mechanical applications in demanding environments. Industries such as automotive, electrical engineering, and consumer electronics employ this material for gears, housings, and structural components that require long-term performance under mechanical stress and thermal cycling. Specific uses include automotive under-hood connectors, high-voltage insulating supports, and mechanical fixtures for electronic devices. In research and innovation, the rod format enables precision machining for prototype development, performance testing of reinforced polymers, and material evaluation for lightweight, corrosion-resistant alternatives to metals. The synergy between PBT’s base resilience and glass fiber reinforcement ensures excellent dimensional control and durability in advanced industrial and scientific applications.
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Tolerances

Rod
Diameter +20% / -10%

Material Properties for Polymers

Chemical Resistance
Element Value
Acids - concentrated Good-Poor
Acids - dilute Good
Alcohols Good
Alkalis Fair
Aromatic hydrocarbons Good
Greases and Oils Good
Halogenated Hydrocarbons Good-Poor
Halogens Poor
Ketones Good-Poor
Electrical Properties
Element Value
Dielectric constant @1MHz 4
Dissipation factor @ 1kHz 0.002
Dielectric strength( kV mm⁻¹ ) 20
Volume resistivity( Ohmcm ) 2x10¹⁴
Physical Properties
Element Value
Flammability HB
Limiting oxygen index( % ) 23
Water absorption - over 24 hours( % ) 0.15-0.35
Density( gcm⁻³ ) 1.63
Mechanical Properties
Element Value
Hardness - Rockwell M93
Elongation at break( % ) 2
Tensile modulus( GPa ) 12
Izod impact strength( J m⁻¹ ) 70
Tensile strength( MPa ) 185
Thermal Properties
Element Value
Heat-deflection temperature - 0.45MPa( C ) 220
Heat-deflection temperature - 1.8MPa( C ) 200
Upper working temperature( C ) 120-200
Thermal conductivity( W m⁻¹ K⁻¹ ) 0.24@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 20-70

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