VALOX™ 357 Advanced Impact Modified Flame Retardant PBT+PC Blend Resin

Enhanced Chemical Resistance for Electrical Industrial Applications

VALOX™ 357 Resin is an Advanced Impact-Modified Flame-Retardant PBT+PC Blend engineered to provide an Exceptional combination of Chemical Resistance, Impact Strength, Flame Retardancy, and Processing Efficiency. Designed for demanding Electrical and Industrial applications, this Grade combines the Strengths of Polybutylene Terephthalate (PBT) and Polycarbonate (PC) to deliver a durable and reliable Engineering material for components operating in Challenging Environments.

The Blend Benefits from the excellent Chemical Resistance and Dimensional Stability of PBT, while the Polycarbonate Component contributes enhanced Toughness and Impact Performance. As a Result, VALOX™ 357 offers improved Resistance to Mechanical Stress, Handling Damage, and Operational Impacts compared to Conventional Flame-Retardant Polyester Materials.

A Key Advantage of VALOX™ 357 Resin is its enhanced Chemical Resistance, allowing Molded Parts to withstand exposure to Oils, Greases, Cleaning Agents, Industrial Chemicals, and other Potentially Aggressive Substances. This Characteristic helps maintain both appearance and Functional performance over Extended Service Life, particularly in Electrical and Industrial Environments.

The material is also formulated for Ease of Processing, enabling manufacturers to Mold Complex Geometries with good Dimensional Control and consistent Part Quality. This Processing Efficiency, combined with its balanced Mechanical and Thermal Properties, supports Cost-Effective Production without Compromising Performance.

For Electrical Industry applications, Flame Retardancy is a critical Requirement. VALOX™ 357 delivers excellent Fire performance while maintaining Toughness and Chemical Durability, making it a Dependable Choice for Electrical Housings, Connectors, Industrial Control Components, and other applications where Safety and reliability are Essential.

RoHS Compliance: VALOX™ 357 Resin supports RoHS Requirements, helping manufacturers reduce the use of Restricted Hazardous Substances while maintaining Dependable Engineering Performance.

Notes:

VALOX™ 357 PBT+PC Blend Resin
PBT + PC Blend
Impact Modified Grade
Enhanced Chemical Resistance
Excellent Impact Strength
Electrical & Industrial Application Grade
Reliable Processing Performance
UL94 - V0 @ 0.63 mm ~ 3.00 mm
RoHS Compliant

VALOX 357 PBT/PC has 0.8 ~ 1.1 Shrinkage, Flow, 3.2 mm. %

Material HDT, 1.82 MPa, ASTM A648, °C

6.4 mm, unannealed 99

Vicat Softening Temperature Rate

Vicat Softening Temperature rate , B120 = 150

Material MFI / Melt Flow Rate

Melt Flow Rate, 250°C/5.0 kgf = 9.6

Material Melt Volume Rate, MVR

Melt Volume Rate, 250°C/5.0 kgf = 8

VALOX™ 357 Resin has a Flexural Modulus of 2060 MPa. 1.3 mm/min ASTM D790

VALOX™ 357 Resin are UL94 - V-0, 0.63 mm ~ 3.00 mm Rated

VALOX Main Page

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