Sabic LEXAN™ PC Resin 121M
Plastic Granules
SABIC PC Lexan 121M General Purpose Grade
LEXAN 121M is a versatile 18 MFR polycarbonate resin. It features improved internal mold release for higher productivity and carries a UL94 HB flammability rating for general applications.
Associated Documents
TDS Americas
Typical property data
Physical Properties
- Melt Flow Rate (300°C/1.2 kgf): 17.5 g/10 min (ASTM D1238)
- Specific Gravity: 1.2 (ASTM D792)
- Density: 1.19 g/cm³ (ASTM D792)
- Specific Volume: 0.83 cm³/g (ASTM D792)
- Water Absorption (23°C/24 hrs): 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 – 0.8% (SABIC method)
Mechanical Properties
- Tensile Stress (Yield, Type I, 50 mm/min): 63 MPa (ASTM D638)
- Tensile Stress (Break, Type I, 50 mm/min): 66 MPa (ASTM D638)
- Tensile Strain (Yield, Type I, 50 mm/min): 7% (ASTM D638)
- Tensile Strain (Break, Type I, 50 mm/min): 120% (ASTM D638)
- Flexural Stress (Yield, 1.3 mm/min, 50 mm span): 100 MPa (ASTM D790)
- Flexural Modulus (1.3 mm/min, 50 mm span): 2350 MPa (ASTM D790)
Impact Properties
- Izod Impact (Unnotched, 23°C): 2140 J/m (ASTM D4812)
- Izod Impact (Notched, 23°C): 820 J/m (ASTM D256)
- Izod Impact (Notched, -30°C): 200 J/m (ASTM D256)
- Falling Dart Impact (23°C): 169 J (ASTM D3029)
- Instrumented Dart Impact Total Energy (23°C): 77 J (ASTM D3763)
Thermal Properties
- Vicat Softening Temperature (Rate B/50): 143°C (ASTM D1525)
- HDT (0.45 MPa, 3.2 mm, Unannealed): 137°C (ASTM D648)
- HDT (1.82 MPa, 3.2 mm, Unannealed): 132°C (ASTM D648)
- Coefficient of Thermal Expansion – Flow (-40°C to 40°C):
- 6.36E-05, 1/°C
- (ASTM E831)
- Coefficient of Thermal Expansion – Crossflow (-40°C to 40°C): 6.5E-05, 1/°C (ASTM E831)
- Specific Heat: 1.26 J/g-°C (ASTM C351)
- Thermal Conductivity: 0.19 W/m-°C (ASTM C177)
Optical Properties
- Light Transmission (2.54 mm): 88% (ASTM D1003)
- Haze (2.54 mm): 1% (ASTM D1003)
- Refractive Index: 1.586 (ASTM D542)
Flame Characteristics
- Flammability Rating: UL94 HB
Injection Molding
- Drying Temperature: 120°C
- Drying Time: 3 – 4 Hours (Cumulative: 48 Hours)
- Maximum Moisture Content: 0.02%
- Melt Temperature: 280 – 305°C
- Nozzle Temperature: 275 – 300°C
- Mold Temperature: 70 – 95°C
- Back Pressure: 0.3 – 0.7 MPa
- Screw Speed: 40 – 70 rpm
- Shot to Cylinder Size Ratio: 40 – 60%
- Vent Depth: 0.025 – 0.076 mm
Features & Benefits
Enhanced Mold Release Efficiency
This LEXAN™ 121M resin contains an internal mold release agent, which reduces cycle times and increases output by allowing for easier part ejection, saving you time and cost.
Superior Impact Resistance & Strength
It offers excellent toughness and high tensile strength, ensuring your products can withstand everyday impacts and stresses without cracking or failing, enhancing durability.
High Heat Resistance & Clarity
With a Heat Deflection Temperature of 132°C and 88% light transmission, it is ideal for applications requiring both thermal stability and optical clarity for a premium look.
Use & Applications
- Consumer Electronics Housings
- Automotive Interior Components
- Lighting Fixtures and Diffusers
- Appliance Housings and Parts
- General Industrial Components