What is PSU GF20

PSU GF20 is an engineering plastic pellet reinforced with 20% glass fiber based on polysulfone (PSU). It combines the heat, hydrolysis, and chemical resistance of PSU with enhanced strength, rigidity, and dimensional stability due to the glass fiber filling. PSU GF20 is an ideal material choice for applications requiring high reliability and long life.

01 | Key Performance Characteristics of PSU GF20

Reinforcement: 20% glass fiber increases the material's strength and modulus, reduces shrinkage (to only 0.2%), and effectively minimizes product warpage.

Mechanical Properties:

  ・Tensile Strength: 112 MPa
  ・Flexural Strength: 153 MPa
  ・Flexural Modulus: 5860 MPa
  ・Notched Impact Strength: 80.1 J/m

Thermal Properties:

  ・Heat Deflection Temperature (HDT): 182°C (1.80 MPa)
  ・Coefficient of Linear Expansion: 3.06E-3 cm/cm/°C, excellent dimensional stability

Physical Properties:

  ・Water Absorption: 0.24% (23°C, 24 hours)
  ・Specific Gravity: 1.38 g/cm³, moderate density

Electrical Properties:

  ・Volume Resistivity: 1E16 Ω·cm
  ・Dielectric Strength: 16.9 kV/mm

Hardness: Rockwell R 123, excellent surface wear resistance

PSU GF20 Data Sheet

02 | Process and Processing Compatibility

Particle Form: Easy to store and transport, suitable for injection molding.

Processing Advantages: Glass fiber reinforcement reduces shrinkage and deformation, ensuring part precision; excellent thermal stability makes it suitable for complex mold designs.

Notes: When processing under high-temperature conditions, barrel temperature must be controlled to avoid degradation; the impact of glass fiber orientation on mechanical properties must be considered during mold design.

03 | Typical Applications

Automotive Parts

  ・Lighting brackets, instrument panels, and engine compartment structural components
  ・Parts requiring heat resistance, oil resistance, and high strength

Medical Devices

  ・Can be used for some re-sterilizable medical device housings and pump and valve accessories
  ・Balanced electrical insulation and hydrolysis resistance

Electronic and Electrical

  ・Insulated terminals, relay housings, and printed circuit board substrates
  ・Meets requirements for high dielectric strength and dimensional stability

Industrial Equipment

  ・Gears, pump bodies, and mechanical components
  ・Long-term use requiring wear resistance and high temperature resistance

04 | Industry Comparisons and Trends

Compared to Unreinforced PSU: PSU GF20 offers significantly improved rigidity, strength, and dimensional stability, making it more suitable for structural parts, while unreinforced PSU is more suitable for products requiring toughness and transparency.

Compared to Other Engineering Plastics:

  ・Compared to PC: Higher heat resistance and better chemical resistance.
  ・Compared to PPS: Slightly lower heat resistance, but better toughness.
  ・Compared to PEEK: Lower performance, but more cost-effective, suitable for mid- to high-end applications.

Industry Trends: With the advancement of lightweighting, electrification, and precision medical equipment, demand for reinforced PSU is growing, and psu gf20 has become a common material.

05 | Purchasing Key Points

Performance Matching: Choose whether glass fiber reinforcement is required based on the application to avoid sacrificing toughness due to excessive rigidity.

Processing Conditions: Ensure that the equipment is capable of high-temperature molding to avoid material degradation that may affect performance.

Certification Requirements: For applications in the medical and electrical fields, pay attention to FDA, UL, RoHS, and other certifications.

Supply Stability: Select a trader with extensive channels and stable supply to ensure long-term supply and after-sales support.

06 | Similar recommendations

07 | Frequently Asked Questions (FAQ)

Q1: Can psu gf20 withstand long-term high temperatures?
A1: Its heat deflection temperature is 182°C, making it suitable for long-term use in high-temperature environments, but attention should be paid to load conditions.

Q2: Is psu gf20 suitable for electrical applications?
A2: Yes. Its volume resistivity reaches 1E16 Ω·cm and its dielectric strength is 16.9 kV/mm, making it suitable for insulating components.

Q3: How does it compare to PPS and PEEK?
A3: PSU GF20 is superior to general engineering plastics in heat and chemical resistance. While not as good as PEEK, it offers a cost advantage.

Q4: Is processing difficult?
A4: The main challenge is controlling the processing temperature to avoid molecular degradation; the glass fiber orientation affects the strength distribution of the product.

08 | Why choose Juyuan as your PSU supplier?

As a supplier with 24 years of experience in international plastic raw material trading, Juyuan is committed to providing customers with:

  ・Multi-channel stable supply: Ensuring the continuous availability of engineering plastics such as psu gf20

  ・Material selection and technical support: Helping customers select the appropriate grade based on their application

  ・Industry trend insights: Providing procurement references and market analysis

  ・Flexible trading and logistics solutions: Supporting fast delivery for customers worldwide

Choosing Juyuan means not only obtaining materials, but also receiving one-stop plastic raw material trading services.

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