VALOX™ FR PBT 357XU

Valox FR PBT 357XU Flame Retardant Grade

VALOX™ FR Resin 357XU is a flame-retardant, impact-modified PC/PBT blend. It offers superior chemical resistance and achieves top UL94 V-0 and 5VA ratings in thin walls, making it ideal for demanding electrical and electronic components.

Character: unreinforced, UV stabilized, impact modified flame retardant, excellent chemical resistance

PBT Resin

Valox™ FR PBT Resin

Key technical data

Flame Ratings: UL94 V-0 @ 0.75mm, 5VA @ 2.5mm
Relative Temperature Index (RTI): 120°C
Tensile Strength at Yield: 50 MPa
Tensile Modulus: 2100 MPa
Notched Izod Impact (23°C): 40 kJ/m²
Heat Deflection Temp (HDT) @ 1.82 MPa: 85°C
Specific Gravity / Density: 1.34
Mold Shrinkage (Flow): 1.1 – 1.8%
Comparative Tracking Index (CTI): 200 V (IEC 60112)

Download

VALOX™ FR PBT 357XU Europe TDS Download

Application

Electrical Bobbins and Coil Formers
Circuit Breakers and Switches
Electrical Enclosures and Housings
Connectors and Sockets
Automotive Electrical Components

Features & Benefits

Superior Flame Retardancy in Thin Walls

This VALOX 357XU Flame Retardant PBT Resin achieves a UL94 V-0 rating at just 0.75mm, allowing for thinner, lighter, and more cost-effective designs without compromising safety in enclosures and connectors.

Exceptional Toughness and Impact Strength

The impact-modified formula provides high notched Izod impact strength, ensuring your components like bobbins and switches can withstand physical shocks and rough handling during assembly and use.

Excellent Chemical & UV Resistance

PC/PBT Valox 357XU resists a wide range of chemicals and features UV stabilization, protecting components from degradation and ensuring long-term performance and aesthetics, even in harsh environments.