Glass Fiber Reinforced PBT GF60 – 60% Glass Fiber Filled PBT

Glass Fiber Reinforced PBT GF60

60% Glass Fiber Filled PBT for Extreme Structural & Metal Replacement Applications

PBT GF60 represents the highest reinforcement level within the glass fiber reinforced PBT family. By incorporating 60% high-modulus glass fibers, this material reaches an exceptional level of stiffness and load-bearing capacity, positioning it as a true metal replacement engineering plastic.

Compared with GF25, GF30, or even GF45 grades, GF60 is specifically engineered for applications where maximum rigidity, minimal deformation, and long-term mechanical stability are non-negotiable. It is widely used in heavy-duty automotive structures, electrical support frames, and industrial components exposed to continuous mechanical stress and elevated temperatures.

Material Composition & Ultra-High Glass Fiber Reinforcement Structure

The performance of Glass Fiber Reinforced PBT GF60 is achieved through precision compounding technology that ensures uniform dispersion of a dense glass fiber network within the PBT matrix. This highly concentrated fiber structure forms a continuous skeleton that carries mechanical loads efficiently.

Material Composition Overview

• Base Polymer: Polybutylene Terephthalate (PBT)

• Glass Fiber Content: 60% chopped glass fiber

• Fiber Type: High-modulus E-glass

• Optional Additives:

  • Heat stabilizer

  • Flame retardant (UL94 V2 / V0)

  • Impact modifier

  • UV stabilizer

• Color Options: Natural, black, customized

At this reinforcement level, GF60 is no longer a conventional plastic material—it behaves as a fiber-dominated structural composite.

Core Advantages: Extreme Rigidity & Structural Dominance

Engineering Advantages

Maximum Rigidity & Flexural Modulus

With 60% glass fiber loading, GF60 delivers one of the highest stiffness levels achievable in injection-moldable PBT materials.

Outstanding Load-Bearing Performance

Designed for components subjected to heavy static and dynamic loads without creep or deformation.

Exceptional Heat Resistance

High heat deflection temperature enables stable performance in engine compartments and industrial thermal environments.

Superior Dimensional Stability

Extremely low shrinkage and minimal thermal expansion ensure long-term shape retention.

Chemical & Fluid Resistance

Maintains PBT’s resistance to oils, fuels, greases, and automotive fluids.

Manufacturing & Commercial Advantages

True Metal Replacement Capability

Enables significant weight reduction while maintaining structural integrity.

Extended Service Life

Optimized for continuous mechanical stress and thermal cycling.

Engineering-Focused Production

Designed for controlled, precision injection molding with proper tool design.

High-End Industrial Acceptance

Used in applications where lower GF grades fail to meet structural demands.

 Typical Application Areas

Automotive & Transportation

• Structural reinforcement frames

• Motor and gearbox supports

• Heavy-load under-hood components

GF60 is selected when plastic must behave like metal.

Electrical & Power Equipment

• Structural frames for contactors

• Power distribution support components

• High-load electrical housings

Provides mechanical reliability without sacrificing insulation stability.

Industrial & Mechanical Engineering

• Equipment frames and bases

• Load-bearing housings

• Heavy-duty mechanical parts

Ideal for replacing aluminum or steel in complex designs.

Processing Performance & Injection Molding Guidelines

Due to its extremely high glass fiber content, PBT GF60 requires advanced mold design and controlled processing conditions.

Typical Processing Parameters

• Melt Temperature: 270–290°C

• Mold Temperature: 100–140°C

• Drying: 120°C for 4 hours

• Injection Speed: Medium

• Shrinkage: 0.05–0.2% (directional)

Gate location, flow direction, and fiber orientation control are critical for optimal part performance.

 OEM / ODM Customization Capabilities

PBT GF60 can be engineered for extreme structural requirements.

Customization Options

• Glass fiber content: GF45 / GF50 / GF60

• Flame retardant grades (UL94 V2 / V0)

• Heat-stabilized formulations

• Enhanced toughness versions

• Color customization

OEM Support Services

• Metal replacement feasibility analysis

• Structural simulation support

• Prototype sampling and validation

• Long-term supply assurance

 Technical Specification – PBT GF60

 FAQ

Q1: What is the main advantage of Glass Fiber Reinforced PBT GF60?
It provides maximum rigidity, extreme load-bearing strength, and heat resistance for metal replacement applications.

Q2: How does GF60 compare to GF45?
GF60 offers significantly higher stiffness and structural performance, suitable for the most demanding applications.

Q3: Is PBT GF60 suitable for metal replacement?
Yes. GF60 is specifically designed for replacing metal components in high-load applications.

Q4: Can flame-retardant versions be supplied?
Yes. UL94 V2 and V0 grades are available upon request.

Q5: Can the glass fiber content be customized?
Yes. Glass fiber loading can be adjusted based on performance and cost targets.