Sabic LEXAN™ PC Resin 121R
Plastic Granules
SABIC PC Lexan 121R General Purpose Grade
SABIC Lexan 121R is an 18 MFR polycarbonate resin featuring mold release for easy processing and a UL94 HB flame rating. It delivers an exceptional balance of impact strength, clarity, and thermal resistance for demanding applications.
Typical property data
Physical Properties
- Specific Gravity: 1.20 (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)
- Melt Flow Rate (300°C/1.2 kgf): 17.5 g/10 min (ASTM D1238)
Mechanical Properties
- Tensile Strength at Yield (50 mm/min): 62 MPa (ASTM D638)
- Tensile Strength at Break (50 mm/min): 68 MPa (ASTM D638)
- Flexural Strength (1.3 mm/min): 96 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min): 2340 MPa (ASTM D790)
- Rockwell Hardness: M70 / R118 (ASTM D785)
Impact Properties
- Izod Impact Strength (Notched, 23°C): 694 J/m (ASTM D256)
- Izod Impact Strength (Unnotched, 23°C): NB (No Break) (ISO 180/1U)
- Tensile Impact Energy: 546 kJ/m² (ASTM D1822)
Thermal Properties
- Vicat Softening Temperature: 154°C (ASTM D1525)
- Heat Deflection Temp (HDT, 0.45 MPa): 137°C (ASTM D648)
- Heat Deflection Temp (HDT, 1.82 MPa): 129°C (ASTM D648)
- Thermal Conductivity: 0.25 W/m°C (ASTM C177)
- Relative Thermal Index (Electric, Mechanical): 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): 14.9 kV/mm (ASTM D149)
- Relative Permittivity (50/60 Hz): 3.17 (ASTM D150)
- Dissipation Factor (50/60 Hz): 0.0009 (ASTM D150)
Flame Characteristics
- Flame Class Rating (UL94): HB to 0.71 mm
- UV-Light, Water Exposure Resistance: F2 (UL 746C)
Injection Molding
- Drying Temperature: 120°C
- Drying Time: 3–4 hrs
- Melt Temperature: 280–305°C
- Mold Temperature: 70–95°C
- Back Pressure: 0.3–0.7 MPa
- Screw Speed: 40–70 rpm
Features & Benefits
Superior Impact Resistance
With its high notched Izod impact strength, this LEXAN 121R Polycarbonate PC Resin ensures your products can withstand sudden drops and impacts, reducing breakage and enhancing durability in tough environments.
Excellent Mold Release & Flow
The built-in mold release agent and 18 MFR of SABIC Lexan 121R facilitate easy, fast demolding and excellent flow in thin walls, boosting your production efficiency and reducing cycle times.
High Clarity & Thermal Stability
This material offers over 88% light transmission and can endure continuous use at high temperatures, making it ideal for transparent covers and components that require both clarity and heat resistance.
Use & Applications
- Automotive Interior Components (e.g., lens covers, switch panels)
- Consumer Electronics Housings
- Electrical Enclosures and Connectors
- Transparent Machine Guards and Covers
- Various Industrial and Consumer Components
