PA66 GF25 FR(V0) Technical Data (Estimated Typical Values)
| Property | Value | Test Standard |
|---|---|---|
| Glass Fiber Content | 25% | ISO 1172 |
| Flame Retardancy | UL94 V-0 (at specified thickness) | UL 94 |
| Tensile Strength | 135 – 170 MPa | ISO 527 |
| Flexural Modulus | 7,000 – 9,500 MPa | ISO 178 |
| Notched Impact Strength | 9 – 12 kJ/m² | ISO 180 |
| HDT @1.8 MPa | 247 – 257 °C | ISO 75 |
| Melting Point | 255 – 265 °C | ISO 3146 |
PA66 FR Series Performance Comparison Table (Updated)
| Property | PA66 FR(V0) | PA66 GF15 FR(V0) | PA66 GF20 FR(V0) | PA66 GF25 FR(V0) | PA66 GF30 FR(V0) | PA66 GF50 FR(V0) |
|---|---|---|---|---|---|---|
| Glass Fiber Content | 0% | 15% | 20% | 25% | 30% | 50% |
| Flame Retardancy | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 | UL94 V-0 |
| Tensile Strength | ~75 MPa | ~120 MPa | ~140 MPa | ~150 MPa | ~160 MPa | ~190 MPa |
| Flexural Modulus | ~3,000 MPa | ~5,500 MPa | ~7,000 MPa | ~7,800 MPa | ~8,500 MPa | ~13,500 MPa |
| Notched Impact | ~6 kJ/m² | ~9 kJ/m² | ~9.5 kJ/m² | ~9.8 kJ/m² | ~10 kJ/m² | ~8 kJ/m² |
| HDT @1.8MPa | ~240 °C | ~245 °C | ~248 °C | ~249 °C | ~250 °C | ~255 °C |
| Key Profile | Basic FR, good toughness | Entry-level balance | Balanced for medium-duty | Enhanced structural FR performance | Best balance of strength, heat & FR | Ultimate stiffness for high-load FR designs |
Key Advantages of PA66 GF25 FR(V0)
Superior Stiffness for Structural FR Applications:
Delivers a high level of rigidity and load-bearing capacity, making it a prime candidate for structural components that cannot compromise on fire safety.
Exceptional Stability Under Heat and Load:
Inherits PA66’s high melting point, with a Heat Deflection Temperature (HDT) typically above 245°C, ensuring stability in under-hood and high-heat electrical environments.
Designed for High-Stress Safety-Critical Parts:
Provides the mechanical integrity needed for demanding applications such as circuit breaker housings, large electrical enclosures, and automotive structural brackets.
Long-Term Durability in Harsh Conditions:
Offers excellent resistance to creep and fatigue under sustained stress, alongside inherent chemical resistance, for dependable long-term performance.
Industry Applications:

PA66 FR Series: Application Scenarios & Product Keywords
| Grade | Typical Application Scenarios (with Product Keywords) |
|---|---|
| PA66 FR(V0) | Electrical Insulation Parts: Sockets, switch housings, circuit breaker bases, fuse boxes, wiring harness clips, relay housings, small electrical enclosures. |
| PA66 GF10 FR(V0) | Thin-Wall Electronic Components: LED lamp holders, miniature connectors, coil bobbins, power adapter housings, internal brackets for electronic devices, cable clamps. |
| PA66 GF15 FR(V0) | Appliances & Automotive Electrical: Power tool housings, junction boxes for home appliances, automotive wiring harness connectors, sensor plugs, HVAC damper actuator housings. |
| PA66 GF20 FR(V0) | Heat-Resistant Electrical & Under-Hood Parts: Engine bay electrical connectors, ignition coil housings, transmission sensor covers, small fan impellers, electric water pump housings. |
| PA66 GF25 FR(V0) | Medium-Structural Strength Parts: Circuit breaker enclosures, power module housings, industrial control equipment panels, automotive headlamp adjustment brackets, mirror housings. |
| PA66 GF30 FR(V0) | High-Demand Structural & Automotive Parts: Intake manifold components (resonators), throttle body brackets, engine cover caps, heavy-duty connectors, industrial gears, power tool gearboxes. |
| PA66 GF33 FR(V0) | High-Performance Precision Structural Parts: Precision gears, bearing housings, high-load electrical terminals, automotive Electronic Control Unit (ECU) housings, high-performance cooling fan frames. |
| PA66 GF35 FR(V0) | High-Rigidity Heat-Resistant Structural Parts: Large under-hood brackets, Battery Management System (BMS) enclosures, motor end covers, industrial valve bodies, pump housings. |
| PA66 GF40 FR(V0) | Metal Replacement Structural Parts: Intake air ducts, turbocharger inlet pipe connectors, structural brackets, heavy-duty industrial equipment panels, drone airframe structural parts. |
| PA66 GF50 FR(V0) | Ultra-High Rigidity Load-Bearing Parts: Structural reinforcement parts, high-performance automotive seat frame components, large industrial bearing cages, robotic arm structural parts, drone landing gear. |
Powering Innovation Across Industries
| Industry | Key Applications |
|---|---|
| Automotive | Engine covers, intake manifolds, structural brackets, sensor housings, connectors. Explore Automotive Applications → |
| Electrical & Electronics | Circuit breakers, switches, connector housings, insulating components. Discover E&E Solutions → |
| Industrial Equipment | Gears, bearings, machine housings, rollers, mechanical components. See Industrial Uses → |

How to Choose the Right Flame Retardant (FR) Grade?
In simple terms:
For basic flame retardancy with good toughness and lowest cost, consider PA6 FR(V0) or PA6 GF15 FR(V0).
For the best balance of flame safety, strength, and heat resistance, choose PA6 GF30 FR(V0) or PA66 GF30 FR(V0).
For applications requiring maximum stiffness and thermal performance alongside V-0 rating, consider PA6 GF40/50 FR(V0) or PA66 GF40/50 FR(V0).
Unsure which is perfect for your part? Describe your application to our engineers for a tailored recommendation: https://nylonplastic.com/contact/
Why Choose Us?


FAQ Section:
Q: Can I get a sample before placing an order?
A: Yes! We provide free samples for qualified projects.
Q: What’s the lead time for production?
A: Standard grades: 5-7 days; Custom formulations: 2-3 weeks.
Q: Do you provide material certifications?
A: Yes, we provide full material documentation and certifications.








