Discover the technical datasheet of Celanese Rynite FR515 BK507. A V-0 flame retardant, glass fiber reinforced PET resin ideal for E&E and automotive parts.
| Manufacturer | Celanese |
|---|---|
| Density | 1.55 g/cm³ |
| Flexural Modulus | 6000 MPa |
| Tensile Strength at Break | 100 MPa |
| Elongation at Break | 2.2 % |
Note: See the product description for additional technical specifications
Celanese Rynite® FR515 BK507 is a modified thermoplastic polyester (PET) resin manufactured by the globally renowned polymer producer Celanese. In terms of material classification, this grade belongs to polyethylene terephthalate (PET) engineering plastics, and its physical appearance features uniform, black (Color Code: BK507), solid, high-density pellets.
As a benchmark product in the field of modified engineering plastics, Rynite® FR515 utilizes advanced glass fiber reinforcement and flame retardant modification technologies. It perfectly combines the high heat resistance and excellent electrical insulation properties of traditional polyester with the ultra-high rigidity provided by glass fibers, maintaining superb dimensional stability even under continuous high temperatures and intense mechanical stress. This grade enjoys an exceptionally high industry reputation in the global electrical & electronics (E&E), automotive manufacturing, and industrial machinery sectors, making it the core preferred solution for replacing metal components and achieving structural lightweighting alongside safety and flame retardancy.
The following technical data is strictly derived from standard material testing results, providing rigorous R&D and production references for engineers and procurement professionals:
| Physical Properties | Test Value | Unit | Test Standard |
| Density | 1.55 | g/cm³ | ISO 1183 |
| Molding Shrinkage, Normal to Flow, Reference Similar Grades | 0.8 | % | ISO 294-4 |
| Molding Shrinkage, Parallel to Flow, Reference Similar Grades | 0.3 | % | ISO 294-4 |
| Mechanical Properties | Test Value | Unit | Test Standard |
| Tensile Modulus | 6140 | MPa | ISO 527-2 |
| Tensile Strength at Break | 100 | MPa | ISO 527-2 |
| Tensile Strain at Break | 2.2 | % | ISO 527-2 |
| Flexural Modulus | 6000 | MPa | ISO 178 |
| Flexural Strength | 160 | MPa | ISO 178 |
| Poisson’s Ratio | 0.35 | — | — |
| Charpy Notched Impact Strength (-40 °C) | 6 | kJ/m² | ISO 179 1eA |
| Charpy Notched Impact Strength (23 °C) | 6.2 | kJ/m² | ISO 179 1eA |
| Charpy Unnotched Impact Strength (-40 °C) | 20 | kJ/m² | ISO 179 1eU |
| Charpy Unnotched Impact Strength (23 °C) | 32 | kJ/m² | ISO 179 1eU |
| Thermal Properties | Test Value | Unit | Test Standard |
| Deflection Temperature Under Load, Unannealed (0.45 MPa) | 238 | °C | ISO 75-2/B |
| Deflection Temperature Under Load, Unannealed (1.8 MPa) | 200 | °C | ISO 75-2/A |
| Melting Temperature (10 °C/min) | 254 | °C | ISO 11357-3 |
| Coefficient of Linear Thermal Expansion, Parallel | 2.90E-05 | cm/cm/°C | ISO 11359-2 |
| Coefficient of Linear Thermal Expansion, Parallel (-40 – 23 °C) | 3.30E-05 | cm/cm/°C | ISO 11359-2 |
| Coefficient of Linear Thermal Expansion, Parallel (55 – 160 °C) | 1.90E-05 | cm/cm/°C | ISO 11359-2 |
| Coefficient of Linear Thermal Expansion, Normal | 9.50E-05 | cm/cm/°C | ISO 11359-2 |
| Coefficient of Linear Thermal Expansion, Normal (-40 – 23 °C) | 7.40E-05 | cm/cm/°C | ISO 11359-2 |
| Coefficient of Linear Thermal Expansion, Normal (55 – 160 °C) | 1.30E-04 | cm/cm/°C | ISO 11359-2 |
| Burning Rate, DNI (1 mm, FMVSS 302) | < 80 | mm/min | ISO 3795 |
| Flammability Classification (0.9 mm) | V-0 | — | IEC 60695-11-10 / UL 94 / IEC 60695-11-20 |
| Flammability Classification (1.5 mm) | 5VA | — | IEC 60695-11-10 / UL 94 / IEC 60695-11-20 |
| Oxygen Index | 32 | % | ISO 4589-2 |
| FMVSS Flammability | B | — | FMVSS 302 |
| Electrical Properties | Test Value | Unit | Test Standard |
| Surface Resistivity | 1.00E+13 | ohms | IEC 62631-3-2 |
| Volume Resistivity | > 1E+11 | ohms · cm | IEC 62631-3-1 |
| Electric Strength | 40 | kV/mm | IEC 60243-1 |
| Relative Permittivity (Dielectric Constant) (1.0e+6 Hz) | 3.5 | — | IEC 62631-2-1 |
| Relative Permittivity (Dielectric Constant) (100 Hz) | 3.6 | — | IEC 62631-2-1 |
| Dissipation Factor (Dielectric Loss) (1.0e+6 Hz) | 0.012 | — | IEC 62631-2-1 |
| Dissipation Factor (Dielectric Loss) (100 Hz) | 0.023 | — | IEC 62631-2-1 |
| Comparative Tracking Index (CTI) | PLC 3 | — | UL 746 |
| Comparative Tracking Index (CTI) | 225 | V | IEC 60112 |
| Other Properties | Test Value | Unit | Test Standard |
| Ejection Temperature | 170 | °C | — |
The technical data sheet (TDS) of Celanese Rynite® FR515 BK507 PET material from Celanese corporation, if there are differences, please refer to the official website of Celanese.
Top-Tier Flame Retardancy: Complies with strict global safety standards, achieving a UL 94 V-0 flammability rating at a thickness of 0.9 mm and passing the top-level 5VA test at 1.5 mm, significantly reducing fire hazards in electrical equipment under severe overload conditions.
High Rigidity and Mechanical Strength: Thanks to the highly efficient glass fiber reinforcement design, the tensile modulus reaches 6140 MPa and the flexural modulus reaches 6000 MPa. This endows the material with excellent resistance to tensile and flexural deformation, making it a perfect structural material for replacing metal to achieve weight reduction.
Superb Electrical Insulation and Tracking Resistance: Features a high dielectric strength of 40 kV/mm and a CTI (Comparative Tracking Index) value of 225 V. It effectively prevents electrical breakdown and surface tracking in high-voltage, high-frequency electrical environments, ensuring the operational safety of core electrical appliances.
Excellent Long-Term Heat Endurance: Possesses a high melting point of 254 °C, and its heat deflection temperature (HDT) under a high load of 1.8 MPa remains as high as 200 °C. This allows molded parts to retain high mechanical strength and resist thermal creep inside long-term high-temperature operating engine compartments or enclosed electronic cavities.
Good Processing Rheology: Although the high glass fiber content increases the rigidity of the material, Celanese’s unique molecular regulation technology grants it excellent melt flow performance, enabling smooth mold filling, short molding cycles, and high surface gloss on molded parts.
Electrical & Electronics (E&E): Due to its outstanding V-0/5VA flame retardant ratings and PLC 3 CTI performance, this material is widely used to manufacture high-voltage coil bobbins, micro switches, high-voltage relay housings, connectors, transformer insulation brushes, and internal structural components for circuit breakers.
Automotive Components: Utilizing its exceptional heat resistance (HDT of 200 °C under a 1.8 MPa load) and chemical stability, it is suitable for automotive under-the-hood parts, sensor housings, ignition system components, lamp sockets, throttle bodies, and various electronic control unit (ECU) enclosures.
Renewable Energy & Photovoltaics: Plays a crucial role in components with extremely high requirements for long-term weatherability, safety flame retardancy, and mechanical load-bearing capacity, such as photovoltaic inverter housings, energy storage battery module insulation brackets, and internal frames of high-voltage DC charging guns.
Appliance Structural Parts: Suitable for high-power household appliances, microwave oven magnetron insulation bases, heat-resistant bases for electric irons, internal pump bodies for dishwashers, and other heavy-duty functional components subjected to long-term exposure to high-temperature water vapor and electrical currents.
Q1: What are the required drying conditions for Celanese Rynite® FR515 prior to injection molding?
A1: Since PET is a polyester-based material, it highly tends to absorb atmospheric moisture and undergo hydrolysis when in a high-temperature molten state. This causes a severe drop in molecular weight, significantly weakening the mechanical strength and flame-retardant properties of the molded products. Therefore, deep drying is mandatory before injection molding. It is recommended to use a dehumidifying dryer to dry the material continuously at 120 °C to 130 °C for 4 to 6 hours, ensuring that the final moisture content of the material is strictly controlled below 0.02%.
Q2: What is the environmental compliance of this grade? Has it passed major global market access certifications?
A2: Yes. Celanese Rynite® FR515 BK507 strictly complies with the compliance regulations of the international electronics and automotive industries. It fully meets the European Union’s RoHS (Restriction of Hazardous Substances) Directive and REACH regulations. Furthermore, the product holds a complete UL Yellow Card certification. Its flame-retardant performance (V-0 / 5VA) and electrical property parameters at various thicknesses have been officially and scientifically tested by Underwriters Laboratories, completely satisfying the compliance audit requirements for independent global B2B procurement in North America, Europe, and other major markets.
Q3: What are the core competitive advantages of Rynite® FR515 PET compared to traditional flame-retardant nylon (such as PA66-FR) or polycarbonate (PC)?
A3:
Compared to Flame-Retardant PA66: The core advantage of the PET material lies in its extremely low water absorption rate. PA66 easily absorbs moisture, which leads to a significant decline in the rigidity, electrical insulation properties, and dimensional precision of the finished products. In contrast, Rynite® FR515 maintains a highly stable mechanical stiffness and precise electrical insulation parameters (with its volume resistivity held above $> 1\text{E}+11\text{ ohms}\cdot\text{cm}$) in both humid and dry environments.
Compared to Flame-Retardant PC: PC materials have relatively lower thermal resistance and are highly prone to environmental stress cracking, especially when exposed to automotive oils or industrial solvents. As a semi-crystalline polyester, Rynite® FR515 offers excellent chemical and solvent resistance. Additionally, its heat deflection temperature under a high load of 1.8 MPa is significantly higher than that of standard PC (reaching 200 °C), providing far more outstanding creep resistance under long-term high temperatures and heavy loads.
