Sabic LEXAN™ PC Resin 241R
Plastic Granules
SABIC Lexan 241R Flame Retardant Grade
LEXAN™ 241R Resin is a versatile, flame-retardant polycarbonate engineered for Asia. This 11 MFR grade features built-in mold release for easier processing and carries a UL94 V2 rating, offering a reliable balance of safety, durability, and manufacturability.
Typical property data
Physical Properties
- Specific Gravity: 1.20 (ASTM D792)
- Density: 1.19 g/cm³ (ASTM D792)
- Water Absorption (23°C, 24hrs): 0.15% (ASTM D570)
- Water Absorption (23°C, Saturated): 0.35% (ASTM D570)
- Water Absorption (Equilibrium, 100°C): 0.58% (ASTM D570)
- Mold Shrinkage, flow, 3.2 mm: 0.5–0.7% (SABIC method)
- Melt Flow Rate (300°C/1.2 kgf): 10.5 g/10 min (ASTM D1238)
Mechanical Properties
- Tensile Stress, Yield (Type I, 50 mm/min): 62 MPa (ASTM D638)
- Tensile Stress, Break (Type I, 50 mm/min): 68 MPa (ASTM D638)
- Tensile Strain, Yield (Type I, 50 mm/min): 7% (ASTM D638)
- Tensile Strain, Break (Type I, 50 mm/min): 130% (ASTM D638)
- Flexural Stress, Yield (1.3 mm/min, 50 mm span): 96 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min, 50 mm span): 2340 MPa (ASTM D790)
- Rockwell Hardness (Scale M): 70 (ASTM D785)
- Rockwell Hardness (Scale R): 118 (ASTM D785)
Impact Properties
- Izod Impact, Unnotched (23°C): 3204 J/m (ASTM D4812)
- Izod Impact, Notched (23°C): 801 J/m (ASTM D256)
- Tensile Impact Strength (Type S): 577 kJ/m² (ASTM D1822)
- Falling Dart Impact (23°C): 169 J (ASTM D3029)
- Instrumented Dart Impact Energy @ Peak (23°C): 63 J (ASTM D3763)
Thermal Properties
- Vicat Softening Temperature (Rate B/50): 154°C (ASTM D1525)
- HDT @ 0.45 MPa (6.4 mm, unannealed): 137°C (ASTM D648)
- HDT @ 1.82 MPa (6.4 mm, unannealed): 132°C (ASTM D648)
- Coefficient of Thermal Expansion (-40°C to 95°C, Flow): 6.84E-05 1/°C (ASTM E831)
- Specific Heat: 1.25 J/g-°C (ASTM C351)
- Thermal Conductivity: 0.27 W/m-°C (ASTM C177)
- Relative Temperature Index (Electrical/Mechanical With or Without Impact): 130°C (UL 746B)
Optical Properties
- Light Transmission (2.54 mm): 88% (ASTM D1003)
- Haze (2.54 mm): 1% (ASTM D1003)
- Refractive Index: 1.586 (ASTM D542)
Electrical Properties
- Volume Resistivity: >1.0E+17 Ω·cm (ASTM D257)
- Dielectric Strength (in air, 3.2 mm): 14.9 kV/mm (ASTM D149)
- Relative Permittivity (50/60 Hz): 3.17 (ASTM D150)
- Relative Permittivity (1 MHz): 2.96 (ASTM D150)
- Dissipation Factor (50/60 Hz): 0.0009 (ASTM D150)
- Dissipation Factor (1 MHz): 0.01 (ASTM D150)
- Hot Wire Ignition: PLC 2 (UL 746A)
- High Voltage Arc Tracking Rate: PLC 2 (UL 746A)
- High Ampere Arc Ignition (Surface): PLC 1 (UL 746A)
- Comparative Tracking Index (UL): PLC 2 (UL 746A)
Flame Characteristics
- UL 94 Flame Class Rating:
- V-2 @ 1.09 mm
- V-0 @ 5.99 mm
- UV-Light, Water Exposure/Immersion: F2 (UL 746C)
Injection Molding
- Drying Temperature: 120°C
- Drying Time: 3–4 hours
- Maximum Moisture Content: 0.02%
- Melt Temperature: 295–315°C
- Mold Temperature: 70–95°C
- Back Pressure: 0.3–0.7 MPa
- Screw Speed: 40–70 rpm
- Vent Depth: 0.025–0.076 mm
Features & Benefits
Built-in Mold Release Agent
This LEXAN 241R formulation includes a mold release agent, reducing part sticking and ejection issues. This leads to faster cycle times, less downtime for mold maintenance, and higher production efficiency.
Excellent Impact & Flame Resistance
With high notched Izod impact strength and a UL94 V2 rating, LEXAN Resin 241R provides crucial durability and fire safety. It’s ideal for electrical components and enclosures that require protection against accidental impacts and must meet flame retardancy standards.
High Thermal Stability
Featuring a Heat Deflection Temperature (HDT) of 132°C at 1.82 MPa, this material maintains structural integrity in elevated temperature environments. This ensures reliability for parts used in automotive under-hood areas or near heat-generating electronics.