Sabic LEXAN™ PC Resin 243R
Plastic Granules
SABIC Lexan 243R Flame Retardant Grade
LEXAN™ 243R resin is a UV-stabilized, flame-retardant polycarbonate with a melt flow rate of 11 (MVR 12). Featuring a built-in mold release and UL94 V2 and UL746C f1 ratings, this material delivers reliable performance in demanding outdoor and electrical applications.
Typical property data
Physical Properties
- Specific Gravity: 1.2 (ASTM D792)
- Specific Volume: 0.83 cm³/g (ASTM D792)
- Density: 1.19 g/cm³ (ASTM D792)
- Water Absorption (23°C/24 hrs): 0.15% (ASTM D570)
- Water Absorption (23°C/Saturated): 0.35% (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 at Yield (50 mm/min): 62 MPa (ASTM D638)
- Tensile Stress at Break (50 mm/min): 65 MPa (ASTM D638)
- Tensile Strain at Yield (50 mm/min): 7% (ASTM D638)
- Tensile Strain at Break (50 mm/min): 110% (ASTM D638)
- Flexural Stress at Yield (1.3 mm/min): 93 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min): 2340 MPa (ASTM D790)
- Rockwell Hardness (M Scale): 70 (ASTM D785)
- Rockwell Hardness (R Scale): 118 (ASTM D785)
Impact Properties
- Izod Impact Strength, Unnotched (23°C): 3204 J/m (ASTM D4812)
- Izod Impact Strength, Notched (23°C): 801 J/m (ASTM D256)
- Tensile Impact Strength (Type S): 546 kJ/m² (ASTM D1822)
- Falling Dart Impact (23°C): 169 J (ASTM D3029)
Thermal Properties
- Vicat Softening Point (Rate B/50): 154°C (ASTM D1525)
- Heat Deflection Temperature (HDT):
- 0.45 MPa: 137°C (ASTM D648)
- 1.82 MPa: 132°C (ASTM D648)
- Coefficient of Thermal Expansion (-40°C to 95°C): 6.84E-05, 1/°C (ASTM E831)
- Thermal Conductivity: 0.27 W/m-°C (ASTM C177)
- Specific Heat: 1.26 J/g-°C (ASTM C351)
- Relative Thermal Index (Electrical, Mechanical with/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.E+17 Ω·cm (ASTM D257)
- Dielectric Strength (3.2 mm): 15 kV/mm (ASTM D149)
- Relative Permittivity:
- 50/60 Hz: 3.17 (ASTM D150)
- 1 MHz: 2.96 (ASTM D150)
- Dissipation Factor:
- 50/60 Hz: 0.0009 (ASTM D150)
- 1 MHz: 0.01 (ASTM D150)
Flame Characteristics
- UL 94 Flame Class Rating:
- V-2 (0.75 mm)
- V-0 (6 mm)
- Oxygen Index (LOI): 25% (ASTM D2863)
- UV Exposure/Immersion Suitability: F1 (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
UV-Stabilized for Outdoor Durability
Designed with UV stabilization, LEXAN 243R resists yellowing and degradation from sunlight—ideal for outdoor enclosures, lighting fixtures, and exposed components.
Mold Release for Efficient Processing
Equipped with a mold release additive, this resin ensures faster demolding, reducing cycle time and tool wear—perfect for high-volume manufacturing environments.
Flame-Retardant & UL Certified
With a UL94 V2 flame rating and UL746C f1 outdoor use certification, LEXAN Resin 243R meets stringent safety standards for electrical housings and industrial components.