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Polycarbonate of bisphenol A (PC)
Gallina products are made of Polycarbonate resin. Among all “Engineering Plastics”, the PC (Polycarbonate) considers the best for:
- Hi Impact Resistance
- Excellent clarity
- Flame resistance
- Light weight
- Weathering stability
- Ease of fabrication
Please contact us regarding any more questions you have or info you need.
- Policarb - installation Instructions
- Click here for MSDS
- Specification
- Load Capacity for policarb
- Click here for Warranty
- Click here for chemical resistance list
Technical / Chemical details
Properties
Glass transition temperature:145oC.
Melting temperature: 225oC.
Amorphous density at 25oC: 1.20 g/cm3.
Molecular weight of repeat unit: 254.3 g/mol.
Typical physical properties
Description
Polycarbonate (PC) is a clear, colorless polymer used extensively for engineering and optical applications. It is available commercially in both pellet and sheet form. Outstanding properties include impact strength and scratch resistance. The most serious deficiencies are poor weatherability and chemical resistance.
Suppliers
Bayer Corporation
Dow Chemical
{Click here for Caliber 600}
GE Plastics
| Physical Properties | Average |
Grade Count |
|
| Density |
1.17 - 1.45 g/cc 0.0423 - 0.0524 lb/in³ | 1.2 g/cc |
88 |
| Water Absorption | 0.09 - 0.35 % | 0.17% |
67 |
| Moisture Absorption at Equilibrium | 0.15 - 0.35 % | 0.27% |
13 |
| Water Absorption at Saturation | 0.35 % | 7 |
|
| Linear Mold Shrinkage | 0.003 - 0.0075 cm/cm / 0.003 - 0.0075 in/in | 0.0061 cm/cm |
72 |
| Melt Flow | 2 - 71 g/10 min | 14.2 g/10 min |
76 |
| Mechanical Properties | Average |
Grade Count |
|
| Hardness | Rockwell M 65 - 76 | 70.9 | 14 |
| Hardness | Rockwell R 118 - 122 | 120 | 19 |
| Tensile Strength | Ultimate 54 - 72 MPa / 7830 - 10400 psi | 64 MPa | 71 |
| Tensile Strength | Yield 58.6 - 70 MPa / 8500 - 10200 psi | 62 MPa | 27 |
| Elongation | at Break 8 - 135 % | 97.9% | 79 |
| Elongation | at Yield 6 - 8 % | 6.1% | 15 |
| Tensile Modulus | 1.6 - 2.4 GPa / 232 - 348 ksi | 2.3 GPa | 25 |
| Flexural Modulus | 1.8 - 4.134 GPa / 261 - 600 ksi | 2.3 GPa | 84 |
| Flexural Yield Strength | 75 - 110 MPa / 10900 - 16000 psi | 91.8 MPa | 75 |
| Compressive Yield Strength | 18 - 86 MPa / 2610 - 12500 psi | 69.7 MPa | 6 |
| Izod Impact | Notched 0.5 - 9.77 J/cm / 0.937 - 18.3 ft-lb/in | 7.2 J/cm | 80 |
| Izod Impact | Untouched 16 - 21.4 J/cm / 30 - 40.1 ft-lb/in | 19.5 J/cm | 5 |
| Izod Impact | Notched Low Temp 6.4 J/cm / 12 ft-lb/in | 1 | |
| Charpy Impact | Unnotched NB / Grade | 5 | |
| Charpy Impact | Notched 0.9 J/cm² / 4.28 ft-lb/in² | 1 | |
| Tensile Impact | Strength 580 kJ/m² / 276 ft-lb/in² | 3 | |
| Tensile Creep Modulus | 1 hour 2200 MPa / 319000 psi | 3 | |
| Tensile Creep Modulus | 1000 hours 17 - 1900 MPa / 2470 - 276000 psi | 1400 MPa | 4 |
| Electrical Properties | Average |
Grade Count |
|
| Electrical Resistively | 1e+015 - 2e+017 ohm-cm / 1e+015 - 2e+017 ohm-cm |
7E+16 ohm-cm | 37 |
| Surface Resistance | 1e+015 ohm / 1e+015 ohm | 7 | |
| Dielectric Constant | 2.9 - 3 / 2.9 - 3 | 3 | 32 |
| Dielectric Constant | Low Frequency 3 - 3.17 | 3.1 | 29 |
| Dielectric Strength | 15 - 30 kV/mm / 381 - 762 kV/in | 26.4 kV/mm | 9 |
| Dissipation Factor | 0.0007 - 0.01 | 0.00966 | 33 |
| Dissipation Factor | Low Frequency 0.0007 - 0.001 | 0.000906 | 32 |
| Arc Resistance | 60 - 120 sec / 60 - 120 sec | 110 sec | 4 |
| Comparative Tracking Index | 275 - 600 V | 370 V | 5 |
| Hot Wire Ignition | HWI 30 sec / 30 sec | 2 | |
| High Amp Arc Ignition | HAI 120 arcs / 120 arcs | 2 | |
| High Voltage Arc-Tracking Rate | HVTR 10 mm/min / 0.394 in/min | 2 | |
| Thermal Properties | Average |
Grade Count |
|
| CTE | linear 20° C 32 - 120 µm/m-° C / 17.8 - 66.7 µin/in-° F |
70.2 µm/m-° C | 48 |
| CTE | linear 20° C Transverse to Flow 70 µm/m-° C / 38.9 µin/in-° F |
4 | |
| CTE | linear 100° C 65 µm/m-° C / 36.1 µin/in-° F | 1 | |
| Heat Capacity | 1 - 1.2 J/g-° C / 0.239 - 0.287 BTU/lb-° F | 1.2 J/g-K | 4 |
| Thermal Conductivity | 0.19 - 0.21 W/m-K / 1.32 - 1.46 BTU-in/hr-ft²-° F | 0.2 W/m-K | 6 |
| Maximum Service Temperature | Air 95 - 154° C / 203 - 309° F | 130° C | 90 |
| Deflection Temperature | at 0.46 MPa (66 psi) 115 - 143° C / 239 - 289° F | 130° C | 72 |
| Deflection Temperature | at 1.8 MPa (264 psi) 95 - 154° C / 203 - 309° F | 130° C | 90 |
| Vicat Softening Point | 126 - 157° C / 259 - 315° F | 150° C | 32 |
| Minimum Service Temperature | Air -60° C / -76° F | 1 | |
| Glass Temperature | 143 - 150° C / 289 - 302° F | 150° C | 5 |
| ULRTI | Electrical 75 - 130° C / 167 - 266° F | 110° C | 28 |
| ULRTI | Mechanical with Impact 75 - 130° C / 167 - 266° F | 110° C | 28 |
| ULRTI | Mechanical without Impact 75 - 130° C / 167 - 266° F | 110° C | 28 |
| Flammability | UL94 HB | 47 | |
| Oxygen Index | 25 - 26 % | 25.9% | 7 |
| Optical Properties | Average |
Grade Count |
|
| Refractive Index | 1.583 - 1.586 / 1.583 - 1.586 | 1.59 | 8 |
| Haze | 1 - 1.1 % | 1% | 4 |
| Transmission | Visible 87 - 89 % | 87.9% | 10 |
| Electrical Properties | Average |
Grade Count |
|
| Processing Temperature | 260 - 332° C / 500 - 630° F | 300° C | 57 |
| Rear Barrel Temperature | 255 - 266° C / 491 - 511° F | 260° C | 12 |
| Middle Barrel Temperature | 266 - 274° C / 511 - 525° F | 270° C | 12 |
| Front Barrel Temperature | 277 - 291° C / 531 - 556° F | 280° C | 12 |
| Nozzle Temperature | 277 - 288° C / 531 - 550° F | 280° C | 12 |
| Mold Temperature | 65 - 100° C / 149 - 212° F | 83° C | 54 |
| Drying Temperature | 107 - 121° C | ||
