Product Overview
SABIC Lexan® 945 is a polycarbonate (PC) resin produced by Saudi Basic Industries Corporation (SABIC), belonging to the Lexan™ series of amorphous thermoplastic resins. This material is classified as a flame-retardant grade, characterized by high dimensional stability, heat resistance, and inherent mechanical strength. It is engineered to meet stringent safety requirements in electronic and electrical applications, primarily utilizing injection molding as its standard processing method.
Technical Specifications
Physical Properties
| Physical Properties | Test Value | Test Unit | Test Standard |
| Density | 1.19 | g/cm³ | ASTM D792 |
| Melt Flow Rate, Mass (300 ℃, 1.2 kg) | 10 | g/10min | ASTM D1238 |
| Mold Shrinkage, Parallel (3.2 mm) | 0.60-0.80 | % | Internal Method |
| Water Absorption (50% RH, 24 hr) | 0.15 | % | ASTM D570 |
| Water Absorption (24 hr) | 0.15 | % | ASTM D570 |
| Water Absorption, Equilibrium (23 ℃) | 0.23 | % | ASTM D570 |
| Rockwell Hardness M | 70 | — | ASTM D785 |
| Rockwell Hardness R | 118 | — | ASTM D785 |
Mechanical Properties
| Mechanical Properties | Test Value | Test Unit | Test Standard |
| Tensile Modulus (50 mm/min) | 2270 | MPa | ASTM D638 |
| Tensile Strength, Yield (50 mm/min, Type I) | 62 | MPa | ASTM D638 |
| Tensile Strength, Break (50 mm/min, Type I) | 65 | MPa | ASTM D638 |
| Tensile Strain, Yield (50 mm/min, Type I) | 6 | % | ASTM D638 |
| Tensile Strain, Break (50 mm/min, Type I) | 130 | % | ASTM D638 |
| Flexural Modulus (1.3 mm/min, 50 mm, span) | 2340 | MPa | ASTM D790 |
| Flexural Strength, Yield (1.3 mm/min, 50 mm, span) | 101 | MPa | ASTM D790 |
| Izod Impact Strength, Notched (23 ℃) | 800 | J/m | ASTM D256 |
| Izod Impact Strength, Unnotched (23 ℃) | No Break | — | ASTM D4812 |
| Instrumented Impact, Total Energy (23 ℃) | 73 | J | ASTM D3763 |
Thermal Properties
| Thermal Properties | Test Value | Test Unit | Test Standard |
| Heat Deflection Temperature, Unannealed (0.45 MPa, 3.2 mm) | 137 | ℃ | ASTM D648 |
| Heat Deflection Temperature, Unannealed (1.8 MPa, 3.2 mm) | 126 | ℃ | ASTM D648 |
| Vicat Softening Point (50 ℃/h, Rate A, Loading 2) | 143 | ℃ | ASTM D1525 |
| CTE, Parallel (-40 – 40 ℃) | 6.70E-05 | cm/cm/℃ | ASTM E831 |
| CTE, Vertical (-40 – 40 ℃) | 6.70E-05 | cm/cm/℃ | ASTM E831 |
| Specific Heat | 1250 | J/kg/℃ | ASTM C351 |
| Thermal Conductivity | 0.27 | W/m-K | ASTM C177 |
| RTI, Electrical | 130 | ℃ | UL 746 |
| RTI, Impact | 120 | ℃ | UL 746 |
| RTI, Tensile | 130 | ℃ | UL 746 |
| Flammability (0.8 mm) | V-2 | — | UL 94 |
| Flammability (1 mm) | V-0 | — | UL 94 |
| Flammability (3 mm) | 5VA | — | UL 94 |
| GWFI (1 mm) | 960 | ℃ | IEC 60695-2-12 |
| GWFI (3 mm) | 850 | ℃ | IEC 60695-2-12 |
| GWIT (1 mm) | 875 | ℃ | IEC 60695-2-13 |
| Oxygen Index | 35 | % | ISO 4589-2 |
Electrical Properties
| Electrical Properties | Test Value | Test Unit | Test Standard |
| Arc Resistance, Tungsten | PLC7 | — | ASTM D495 |
| CTI | PLC 2 | — | UL 746 |
| High Current Arc Ignition | PLC 3 | — | UL 746 |
| HVTR | PLC4 | — | UL 746 |
| Glow Wire Ignition | PLC 2 | — | UL 746 |
Disclaimer: The technical specifications for SABIC Lexan® 945 PC presented herein are derived from data issued by SABIC or certified third-party testing institutions. While we have made every effort to ensure the accuracy of the information provided, we assume no liability for any consequences arising from the use of Lexan® 945 PC based on these data. Given the variables involved in processing conditions, we strongly recommend conducting thorough trials of Lexan® 945 PC under your specific operational environment prior to final material selection.
Logistics & Supply Standards
SABIC Lexan® 945 is supplied in standard 25kg moisture-proof bags. We maintain consistent warehouse inventory levels to ensure supply stability for industrial manufacturing needs. Average delivery lead times range from 7 to 14 working days, depending on specific logistical arrangements and destination. As Lexan® 945 is a non-hazardous plastic resin, it supports consolidated shipping with other compatible non-hazardous raw materials to optimize transport costs.
Compliance & Quality Commitment
We provide original documentation including Technical Data Sheets (TDS), Material Safety Data Sheets (MSDS), and Certificates of Analysis (COA) for all batches. This grade complies with global regulatory standards including REACH and RoHS for restricted substances, and holds established UL 94 flame-retardant ratings. We maintain a full-chain production batch control system to ensure complete product traceability from resin polymerization through to final delivery, ensuring that each shipment meets defined quality specifications.
Sustainability & ESG
Lexan® 945 is a thermoplastic material that allows for mechanical recycling processes where appropriate infrastructure exists. The manufacturing process focuses on optimizing energy efficiency and minimizing volatile organic compound (VOC) emissions during synthesis. SABIC’s production facilities operate under rigorous environmental management systems, adhering to global supply chain standards regarding resource efficiency and industrial emission controls to support downstream ESG reporting requirements.
Frequently Asked Questions (FAQs)
Q1: How is the flow performance of SABIC Lexan® 945 in thin-walled injection molded parts? Is there a risk of short shots?
A: Lexan® 945 has a melt flow rate (MFR) of 10 g/10min, which falls within the medium viscosity range. For thin-walled parts with complex structures, the material exhibits good melt-filling performance. However, actual molding results are directly influenced by mold temperature, injection pressure, and wall thickness design. It is recommended to perform simulation analysis based on the material’s rheological properties during initial mold design to optimize gate positioning and wall thickness settings, thereby effectively avoiding short shots or uneven filling.
Q2: What reliability assurances does this material offer for components subjected to long-term electrical operating environments?
A: Lexan® 945 is specifically designed for electrical and electronic applications, demonstrating stable electrical performance. According to the UL 746 standard, the Relative Thermal Index (RTI) of this grade reaches 130°C for electrical, 120°C for impact, and 130°C for tensile properties. These indicators demonstrate that the material can maintain stable physical and electrical properties in rated long-term high-temperature electrical environments, reducing the risk of insulation failure caused by thermal aging.
Q3: Is the flame retardancy of this grade consistent across different thicknesses? If my product thickness exceeds 3mm, is the UL certification still valid?
A: The flame retardancy rating of a material is closely related to its thickness. According to the standards, Lexan® 945 achieves a V-0 rating at a thickness of 1mm and a 5VA rating at 3mm. While the rule of thumb suggests that flame retardancy often remains stable or improves as thickness increases, according to UL certification standards, the specific flame retardancy rating at that thickness must be determined based on actual testing results of the final product. If you have requirements for higher-level certification, please contact our technical team to conduct a compliance assessment.
