Tech Support: Materials
SLA Resins
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POLYCARBONATE
PHYSICAL PROPERTIES
| Density |
0.0397-0.0484 lb/in3 |
| Water Absorption |
0.05-0.7 % |
| Moisture Absorption at Equilibrium |
0.18-0.35 % |
| Water Absorption at Saturation |
0.6-0.7 % |
| Linear Mold Shrinkage |
0.002-0.008 in/in |
| Melt Flow |
1.4-50 g/10 min |
| Spiral Flow |
9.84-29.9 in |
MECHANICAL PROPERTIES
| Hardness, Rockwell R |
108-122 |
| Tensile Strength, Ultimate |
5800-12500 psi |
| Tensile Strength, Yield |
6530-10000 psi |
| Elongation @ break |
2-150 % |
| Elongation @ Yield |
3-105 % |
| Tensile Modulus |
276-1160 ksi |
| Flexural Modulus |
300-799 ksi |
| Flexural Yield Strength |
10400-17400 psi |
| Izod Impact, Notched |
1.41- 14.1ft-lb/in |
| Izod Impact, Unnotched |
10.1-NB |
| Izod Impact, Notched Low Temp |
1.4-10 ft-lb/in |
| Charpy Impact, Unnotched |
NB |
| Charpy Impact |
20.5-37.6 ft-lb/in2 |
| Tensile Creep Modulus, 1 hour |
261000-363000 psi |
| Tensile Creep Modulus, 1000 hours |
218000-276000 psi |
ELECTRICAL PROPERTIES
| Electrical Resistivity |
1E+14-1E+17 ohm-cm |
| Dielectric Constant |
2.9-3.2 |
| Dielectric Constant, Low Frequency |
2-3.3 |
| Dielectric Strength |
399-1780 kV/in |
| Dissipation Factor |
0.007-0.02 |
| Dissipatin Factor, Low Frequency |
0.002-0.02 |
| Surface Resistance |
1E+13-1E+16 ohm |
| Arc Resistance |
0-120 sec |
| Comparative Tracking Index |
150-600 V |
| Hot Wire Ignition, HWI |
15-60 sec |
| High Amp Arc Ignition, HAI |
120 arcs |
| High Voltage Arc-Tracking Rate, HVTR |
5.91 in/min |
THERMAL PROPERTIES
| CTE, linear 200 C |
15.6-51.1 µ in/in-°F |
| CTE, linear 20° C Transverse to Flow |
28.9-52.8 µ in/in-°F |
| Heat Capacity |
0.287-0.607 BTU/lb-°F |
| Thermal Conductivity |
0.972-1.8 BTU-in/hr-ft²-°F |
| Melting Point |
374-500°F |
| Maximum Service Temperature, Air |
140-270°F |
| Deflection Temperature at 0.46 MPa |
180-279°F |
| Deflection Temperature at 1.8 MPa |
149-259°F |
| Vicat Softening Point |
183-284°F |
| UL RTI, Electrical |
140-203°F |
| UL RTI, Mechanical with Impact |
140-185°F |
| UL RTI Mechanical without Impact |
140-185°F |
| Flammability, UL94 |
HB-V-O |
| Oxygen Index |
21-34% |
PROCESSING PROPERTIES
| Processing Temperature |
473-585°F |
| Rear Barrel Temperature |
491-500°F |
| Middle Barrel Temperature |
511-516°F |
| Front Barrel Temperature |
536°F |
| Nozzle Temperature |
516-520°F |
| Mold Temperature |
140-189°F |
| Drying Temperature |
174-241°F |
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