SABIC Innovative Plastics Lexan? 121R PC | |||
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Categories: |
Polymer; Thermoplastic; Polycarbonate (PC)
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Material Notes: |
UL rated HB as of 10/97. 200 series recommended when V-2 rating required. Nonhalogenated. 17.5 MFR, for small, intricate parts. Internal mold release.
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Physical Properties | Metric | English | Comments | ||
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Specific Gravity | 1.20 g/cc | 1.20 g/cc | ASTM D792 | ||
Density | 1.19 g/cc | 0.0430 lb/in3 | ASTM D792 | ||
Water Absorption |
0.15 % @Time 86400 sec |
0.15 % @Time 24.0 hour |
ASTM D570 | ||
Moisture Absorption at Equilibrium | 0.35 % | 0.35 % | ASTM D570 | ||
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0.58 % @Temperature 100 °C |
0.58 % @Temperature 212 °F |
ASTM D570 | ||
Linear Mold Shrinkage, Flow |
0.0050 - 0.0070 cm/cm @Thickness 3.20 mm |
0.0050 - 0.0070 in/in @Thickness 0.126 in |
SABIC Method | ||
Melt Flow |
17.5 g/10 min @Load 1.20 kg, Temperature 300 °C |
17.5 g/10 min @Load 2.65 lb, Temperature 572 °F |
ASTM D1238 | ||
Mechanical Properties | Metric | English | Comments | ||
Hardness, Rockwell M | 70 | 70 | ASTM D785 | ||
Hardness, Rockwell R | 118 | 118 | ASTM D785 | ||
Tensile Strength at Break | 68.0 MPa | 9860 psi | Type I, 50 mm/min; ASTM D638 | ||
Tensile Strength, Yield | 62.0 MPa | 8990 psi | Type I, 50 mm/min; ASTM D638 | ||
Elongation at Break | 125 % | 125 % | Type I, 50 mm/min; ASTM D638 | ||
Elongation at Yield | 7.0 % | 7.0 % | Type I, 50 mm/min; ASTM D638 | ||
Flexural Yield Strength | 96.0 MPa | 13900 psi | 1.3 mm/min, 50 mm span; ASTM D790 | ||
Flexural Modulus | 2.34 GPa | 339 ksi | 1.3 mm/min, 50 mm span; ASTM D790 | ||
Izod Impact, Notched | 6.94 J/cm | 13.0 ft-lb/in | ASTM D256 | ||
Izod Impact, Unnotched | 32.04 J/cm | 60.02 ft-lb/in | ASTM D4812 | ||
Izod Impact, Notched (ISO) | 65.0 kJ/m2 | 30.9 ft-lb/in2 | 80*10*3; ISO 180/1A | ||
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11.0 kJ/m2 @Temperature -30.0 °C |
5.23 ft-lb/in2 @Temperature -22.0 °F |
80*10*3; ISO 180/1A | ||
Izod Impact, Unnotched (ISO) | NB | NB | 80*10*3; ISO 180/1U | ||
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NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
80*10*3; ISO 180/1U | ||
Charpy Impact Unnotched | NB | NB | Edgew 80*10*3 sp=62mm; ISO 179/1eU | ||
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NB @Temperature -30.0 °C |
NB @Temperature -22.0 °F |
Edgew 80*10*3 sp=62mm; ISO 179/1eU | ||
Charpy Impact, Notched | 6.50 J/cm2 | 30.9 ft-lb/in2 | Edgew 80*10*3 sp=62mm; ISO 179/1eA | ||
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1.20 J/cm2 @Temperature -30.0 °C |
5.71 ft-lb/in2 @Temperature -22.0 °F |
Edgew 80*10*3 sp=62mm; ISO 179/1eA | ||
Tensile Impact Strength | 546 kJ/m2 | 260 ft-lb/in2 | Type S; ASTM D1822 | ||
Dart Drop, Total Energy | 62.0 J | 45.7 ft-lb | Instrumented Impact Energy @ peak; ASTM D3763 | ||
169 J | 125 ft-lb | ASTM D3029 | |||
Taber Abrasion, mg/1000 Cycles | 10 | 10 | CS-17, 1 kg; ASTM D1044 | ||
Electrical Properties | Metric | English | Comments | ||
Volume Resistivity | >= 1.00e+17 ohm-cm | >= 1.00e+17 ohm-cm | ASTM D257 | ||
Dielectric Constant ![]() |
2.96 @Frequency 1.00e+6 Hz |
2.96 @Frequency 1.00e+6 Hz |
ASTM D150 | ||
3.17 @Frequency 50.0 - 60.0 Hz |
3.17 @Frequency 50.0 - 60.0 Hz |
ASTM D150 | |||
Dielectric Strength |
14.9 kV/mm @Thickness 3.20 mm |
378 kV/in @Thickness 0.126 in |
in air; ASTM D149 | ||
Dissipation Factor ![]() |
0.00090 @Frequency 50.0 - 60.0 Hz |
0.00090 @Frequency 50.0 - 60.0 Hz |
ASTM D150 | ||
0.010 @Frequency 1.00e+6 Hz |
0.010 @Frequency 1.00e+6 Hz |
ASTM D150 | |||
Comparative Tracking Index | 250 - 400 V | 250 - 400 V | UL 746A | ||
Hot Wire Ignition, HWI | 30 - 60 sec | 30 - 60 sec | UL 746A | ||
High Amp Arc Ignition, HAI | 60 - 120 arcs | 60 - 120 arcs | UL 746A | ||
High Voltage Arc-Tracking Rate, HVTR | 25.4 - 80.0 mm/min | 1.00 - 3.15 in/min | UL 746A | ||
Thermal Properties | Metric | English | Comments | ||
CTE, linear, Parallel to Flow |
68.4 μm/m-°C @Temperature -40.0 - 95.0 °C |
38.0 μin/in-°F @Temperature -40.0 - 203 °F |
ASTM E 831 | ||
Specific Heat Capacity | 1.25 J/g-°C | 0.299 BTU/lb-°F | ASTM C351 | ||
Thermal Conductivity | 0.250 W/m-K | 1.74 BTU-in/hr-ft2-°F | ASTM C177 | ||
Deflection Temperature at 0.46 MPa (66 psi) |
137 °C @Thickness 6.40 mm |
279 °F @Thickness 0.252 in |
unannealed; ASTM D648 | ||
Deflection Temperature at 1.8 MPa (264 psi) |
129 °C @Thickness 6.40 mm |
264 °F @Thickness 0.252 in |
unannealed; ASTM D648 | ||
Vicat Softening Point | 154 °C | 309 °F | Rate B/50; ASTM D1525 | ||
UL RTI, Electrical | 130 °C | 266 °F | UL 746B | ||
UL RTI, Mechanical with Impact | 130 °C | 266 °F | UL 746B | ||
UL RTI, Mechanical without Impact | 130 °C | 266 °F | UL 746B | ||
Flammability, UL94 |
HB @Thickness 0.710 mm |
HB @Thickness 0.0280 in |
UL 94 | ||
Optical Properties | Metric | English | Comments | ||
Refractive Index | 1.586 | 1.586 | ASTM D542 | ||
Haze |
1.0 % @Thickness 2.54 mm |
1.0 % @Thickness 0.100 in |
ASTM D1003 | ||
Transmission, Visible | 88 % | 88 % | 2.54 mm; ASTM D1003 | ||
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Radiant Panel Listing | YES | UL Tested | |||
Specific Volume | 0.83cm^3/g | ASTM D792 | |||
UV-light, water exposure/immersion | F2 |
UL 746C |
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0.83cm^3/g |
ASTM D792 |

