Sabic LEXAN™ PC Resin 203R
SABIC PC Lexan 203R General Purpose Grade
LEXAN™ 203R resin is a versatile, flame-retardant polycarbonate grade designed for injection molding and extrusion. It offers a balanced flow (7 MFR), built-in UV stabilization, mold release, and a UL94 V2 rating.
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/24hrs): 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): 7 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): 65 MPa (ASTM D638)
- Tensile Strain, Yield (Type I, 50 mm/min): 7% (ASTM D638)
- Tensile Strain, Break (Type I, 50 mm/min): 110% (ASTM D638)
- Flexural Stress (Yield, 1.3 mm/min, 50 mm span): 93 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min, 50 mm span): 2340 MPa (ASTM D790)
- Hardness, Rockwell M: 70 (ASTM D785)
- Hardness, Rockwell R: 118 (ASTM D785)
- Taber Abrasion (CS-17, 1 kg): 10 mg/1000 cycles (ASTM D1044)
Impact Properties
- Izod Impact, Unnotched (23°C): 3204 J/m (ASTM D4812)
- Izod Impact, Notched (23°C): 907 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 Temperature (Rate B/50): 154°C (ASTM D1525)
- HDT (0.45 MPa, unannealed): 137°C (ASTM D648)
- HDT (1.82 MPa, unannealed): 132°C (ASTM D648)
- Coefficient of Thermal Expansion (-40°C to 95°C): 6.84E-05 1/°C (ASTM E831)
- Specific Heat: 1.26 J/g-°C (ASTM C351)
- Thermal Conductivity: 0.29 W/m-°C (ASTM C177)
- Relative Temperature Index (Electrical): 130°C (UL 746B)
- Relative Temperature Index (Mechanical with impact): 130°C (UL 746B)
- Relative Temperature Index (Mechanical 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 (in air, 3.2 mm): 15 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)
Flame Characteristics
- UL 94 V-2 Flame Class Rating: 0.75 mm (UL 94)
- UL 94 V-0 Flame Class Rating: 6 mm (UL 94)
- UV-light and Water Exposure: F1 (UL 746C)
Injection Molding
- Drying Temperature: 120°C
- Drying Time (Normal): 3–4 hours
- Drying Time (Cumulative): 48 hours
- Maximum Moisture Content: 0.02%
- Melt Temperature: 310–330°C
- Nozzle Temperature: 305–325°C
- Mold Temperature: 80–115°C
- Back Pressure: 0.3–0.7 MPa
- Screw Speed: 40–70 rpm
- Shot to Cylinder Size: 40–60%
- Vent Depth: 0.025–0.076 mm
Features & Benefits
Built-in Flame Retardant Safety
This LEXAN 203R resin is UL94 V2 rated, providing a critical level of fire resistance
Exceptional Impact Strength & Toughness
With high notched Izod impact resistance, parts made from LEXAN Resin 203R can withstand sudden drops, impacts, and rough handling.
UV Stabilized
The integrated UV stabilizer protects against sunlight degradation.
Use & Applications
- Electrical enclosures and housings
- Automotive interior components and lighting lenses.
- Protective covers, shields, and visors.
- Extruded profiles, sheets, and tubes requiring flame retardancy.
- Durable components for outdoor equipment and appliances.