LEXAN™ Copolymer 4251R
- Chemical Family
- Polycarbonate (PC)
SABIC's Specialties Business High heat polycarbonate copolymer blend with an excellent balance of heat resistance, processability, and impact strength. Available in a range of opaque colors. This product does not contain PFAS intentionally added during SHPP’s manufacturing process and are not expected to contain unintentional PFAS impurities. Each user is responsible for evaluating the presence of unintentional PFAS impurities.
Product families
Applications
- Medical Devices & Assemblies
Product Families
- High Performance Thermoplastics
- Polycarbonates
Other characteristics
- Brand
- LEXAN™ Copolymer
- Polymer Name
- Polycarbonate (PC)
- Flexural Modulus
- 2040.0 - 2040.0 MPa
- Additives Included
- Heat Stabilizer, Mold Release Agent
- Heat Stabilizer
- Mold Release Agent
- Processing Methods
- Injection Molding
- Note
ᶜ Injection Molding parameters are only mentioned as general guidelines. These may not apply or may need adjustment in specific situations such as low shot sizes, large part molding, thin wall molding and gas-assist molding. Injection Molding parameters are only mentioned as general guidelines. These may not apply or may need adjustment in specific situations such as low shot sizes, large part molding, thin wall molding and gas-assist molding.; ⁷ Injection Molding parameters are only mentioned as general guidelines. These may not apply or may need adjustment in specific situations such as low shot sizes, large part molding, thin wall molding and gas-assist molding.; ¹¹ The information stated on Technical Datasheets should be used as indicative only for material selection purposes and not be utilized as specification or used for part or tool design.
- Color
- Opaque
- Translucent
- Transparent
- Markets
- Healthcare & Pharma
- Technology
- Plastics
- Labeling Claims
- No Added PFAS
- Material Features
- Good Mold Release
- Heat Stabilized
- High Impact Performance
- High Impact Resistance
- High Temperature Resistance
- No Added PFAS
- Translucent
- Unreinforced
- Plastics and Elastomers End Uses
- Consumer Applications
- Medical/Healthcare Applications
- Safety Helmets
- Plastics and Elastomers Functions
- Resin
- Plastics and Elastomers Processing Methods
- Injection Molding
Technical data
Table 1 of 5
13 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Tensile Stress (Yield, Type I, 50 mm/min) ¹¹ | 64 | MPa | ASTM D638 |
| Tensile Stress (Break, Type I, 50 mm/min) ¹¹ | 63 | MPa | ASTM D638 |
| Tensile Strain (Yield, Type I, 50 mm/min) ¹¹ | 6.7 | % | ASTM D638 |
| Tensile Strain (Break, Type I, 50 mm/min) ¹¹ | 102 | % | ASTM D638 |
| Tensile Modulus (at 50 mm/min) ¹¹ | 2180 | MPa | ASTM D638 |
| Flexural Stress (Yield, 1.3 mm/min, 50 mm span) ¹¹ | 101 | MPa | ASTM D790 |
| Flexural Modulus (at 1.3 mm/min, 50 mm span) ¹¹ | 2230 | MPa | ASTM D790 |
| Tensile Stress (Yield, 50 mm/min) ¹¹ | 62 | MPa | ISO 527 |
| Tensile Stress (Break, 50 mm/min) ¹¹ | 59 | MPa | ISO 527 |
| Tensile Strain (Yield, 50 mm/min) ¹¹ | 6.6 | % | ISO 527 |
| Tensile Strain (Break, 50 mm/min) ¹¹ | 96.1 | % | ISO 527 |
| Tensile Modulus (at 1 mm/min) ¹¹ | 2160 | MPa | ISO 527 |
Table 2 of 5
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Specific Gravity ¹¹ | 1.2 | — | ASTM D792 |
| Mold Shrinkage (flow, 3.2 mm) ᶜ ¹¹ | 0.6 - 0.8 | % | SABIC method |
| Melt Flow Rate (at 300°C, 1.2 kgf) ¹¹ | 5.6 | g/10 min | ASTM D1238 |
| Density ¹¹ | 1.1 | g/cm³ | ISO 1183 |
| Water Absorption (at 23°C, saturated) ¹¹ | 0.24 | % | ISO 62-1 |
| Moisture Absorption (at 23°C, 50% RH) ¹¹ | 0.09 | % | ISO 62 |
| Melt Volume Rate (at 330°C, 2.16kg) ¹¹ | 31 | cm³/10 min | ISO 1133 |
Table 3 of 5
9 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Vicat Softening Temperature (Rate B/50) ¹¹ | 156 | °C | ASTM D1525 |
| Vicat Softening Temperature (Rate B/50) ¹¹ | 155 | °C | ISO 306 |
| Heat Deflection Temperature (at 1.82 MPa, 3.2mm, Unannealed) ¹¹ | 136 | °C | ASTM D648 |
| Coefficient of Thermal Expansion (at -40°C to 40°C, flow) ¹¹ | 0.0000616 | 1/°C | ASTM E831 |
| Coefficient of Thermal Expansion (at -40°C to 40°C, flow) ¹¹ | 0.0000616 | 1/°C | ISO 11359-2 |
| Coefficient of Thermal Expansion (at -40°C to 40°C, xflow) ¹¹ | 0.0000673 | 1/°C | ASTM E831 |
| Coefficient of Thermal Expansion (at -40°C to 40°C, xflow) ¹¹ | 0.0000673 | 1/°C | ISO 11359-2 |
| Vicat Softening Temperature (Rate B/120) ¹¹ | 157 | °C | ISO 306 |
| Heat Deflection Temperature/Af (at 1.8 Mpa, Flatw 80*10*4, sp=64mm) ¹¹ | 134 | °C | ISO 75/Af |
Table 4 of 5
7 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Izod Impact (Notched, at 23°C) ¹¹ | 639 | J/m | ASTM D256 |
| Izod Impact (Notched, at -30°C) ¹¹ | 331 | J/m | ASTM D256 |
| Instrumented Dart Impact Total Energy (at 23°C) ¹¹ | 75 | J | ASTM D3763 |
| Instrumented Dart Impact Total Energy (at -30°C) ¹¹ | 78 | J | ASTM D3763 |
| Izod Impact (Notched, 80*10*4, at 23°C) ¹¹ | 43 | kJ/m² | ISO 180/1A |
| Izod Impact (Notched, 80*10*4, at -30°C) ¹¹ | 20 | kJ/m² | ISO 180/1A |
| Charpy Impact (at 23°C, V-notch Edgew 80*10*4 sp=62mm) ¹¹ | 48 | kJ/m² | ISO 179/1eA |
Table 5 of 5
14 rows| Characteristic | Value | Unit |
|---|---|---|
| Drying Temperature ⁷ | 120 | °C |
| Drying Time ⁷ | 3 - 4 | Hrs |
| Drying Time (Cumulative) ⁷ | 48 | Hrs |
| Maximum Moisture Content ⁷ | 0.02 | % |
| Melt Temperature ⁷ | 310 - 330 | °C |
| Nozzle Temperature ⁷ | 305 - 325 | °C |
| Front - Zone 3 Temperature ⁷ | 310 - 330 | °C |
| Middle - Zone 2 Temperature ⁷ | 300 - 320 | °C |
| Rear - Zone 1 Temperature ⁷ | 290 - 310 | °C |
| Mold Temperature ⁷ | 80 - 115 | °C |
| Back Pressure ⁷ | 0.3 - 0.7 | MPa |
| Screw Speed ⁷ | 40 - 70 | rpm |
