VALOX™ ENH4550 PBT FR Resin with 25% Glass Reinforced Filled Toughness

Non-Brominated Non-Chlorinated Flame Retardant. Chemical Resistance

VALOX™ ENH4550 Resin is an Environmentally Responsible Non-Brominated, Non-Chlorinated Flame-Retardant PBT (Polybutylene Terephthalate) Engineering Resin Reinforced with 25% Glass Fiber to deliver a Superior balance of Strength, Stiffness, Toughness, and Flame-Retardant Performance. Designed for demanding Electrical and Industrial applications, this Advanced Grade combines excellent Mechanical properties with a Halogen-Free Flame-Retardant System, supporting both performance and Sustainability Objectives.

The 25% Glass Fiber Reinforcement significantly enhances the Structural capability of VALOX™ ENH4550, providing improved Rigidity, Dimensional Stability, and Load-Bearing performance compared to Lower-Filled or Unreinforced PBT Grades. This Reinforcement helps Molded components maintain Precise Dimensions and Mechanical Integrity even under Elevated Temperatures and Continuous Service Conditions.

A Key Differentiator of VALOX™ ENH4550 Resin is its Environmentally Friendly Flame-Retardant Formulation. By Utilizing a Non-Brominated and Non-Chlorinated Flame-Retardant System, the material offers an Alternative to Conventional Halogen-Based Technologies while still delivering excellent Fire Performance. This makes the Resin particularly attractive for manufacturers seeking Sustainable material Solutions that meet Stringent Electrical Safety Requirements.

The material also provides excellent Chemical Resistance, allowing components to withstand exposure to Oils, Greases, Cleaning Agents, Fuels, and various Industrial Chemicals. This Durability contributes to Extended Service Life and reliable performance in Challenging Operating Environments.

Another Notable Advantage is the Material's ability to achieve UL94 V-0 Classification at Thicknesses as Low as 0.30 mm, making VALOX™ ENH4550 an excellent Choice for Compact and Thin-Wall Designs where both Flame performance and Structural Strength are Critical. This combination of High Reinforcement, Flame Retardancy, and Dimensional Stability enables Engineers to develop Lightweight and Space-Efficient components without Sacrificing Safety or Durability.

RoHS Compliance: VALOX™ ENH4550 Resin supports RoHS requirements and aligns with Modern Sustainability Initiatives by Restricting Hazardous Substances while maintaining excellent Engineering performance and Long-Term Reliability.

Notes:

VALOX™ ENH4550 PBT Resin
25% Glass Fiber Reinforced
Non-Brominated Formulation
Non-Chlorinated Formulation
Halogen-Free Flame Retardant System
Excellent Strength & Stiffness
Excellent Chemical Resistance
Excellent Dimensional Stability
Environmentally Responsible Material Solution
UL94 - V0 @ 0.30 mm ~ 3.00 mm
RoHS Compliant

VALOX ENH4550 PBT has 0.10 ~ 0.50 Shrinkage, Flow, 3.2 mm. %

Material HDT, 1.82 MPa, ASTM A648, °C

3.2 mm, unannealed 205

Vicat Softening Temperature Rate

Vicat Softening Temperature rate , B120 = 208

Material MFI / Melt Flow Rate

Melt Flow Rate, 265°C/5.0 kgf = 27

Material Melt Volume Rate, MVR

Melt Volume Rate, 250°C/5.0 kgf = 18

VALOX™ ENH4550 Resin has a Flexural Modulus of 9200 MPa. 2 mm/min ISO 178

VALOX™ ENH4550 Resin are UL94 - V-0, 0.30 mm ~ 3.00 mm Rated

VALOX Main Page

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