Semitron 520HR
| GENERAL PROPERTIES | ASTM OR UL TEST | TYPICAL VALUES |
| ESD 520 HR | ||
| Colour | Khaiki grey | |
| PHYSICAL PROPERTIES | ||
| Specific Gravity (g/cm³) | D792 | 1.58 |
| Water Absorption,24 hrs (%) | D570 | 0.60 |
| MECHANICAL PROPERTIES | ||
| Tensile Strength (psi) | D638 | 12,000 |
| Tensile Modulus (psi) | D638 | 800,000 |
| Tensile Elongation at Yield (%) | D638 | 3 |
| Flexural Strength (psi) | D790 | 20,000 |
| Flexural Modulus (psi) | D790 | 850,000 |
| Compressive Strength (psi) | D695 | 30,000 |
| Compressive Modulus (psi) | D695 | 600,000 |
| Hardness,Rockwell | D785 | M108 |
| IZOD Notched Strength (ft-lb/in) | D256 | 0.8 |
| THERMAL PROPERTIES | ||
| Coeff. Of Thermal Expansion (x 10¯⁵in/in/°F) | E831 | 2.8 |
| Heat Deflection Temp (°F/°C) @ 264 psi | D648 | 520/271 |
| Max Operating Temp (°F/°C) | – | 500/260 |
| Thermal Conductivity BTU-in/ft²-hr-°F) | F433 | 2.6 |
| Flammability rating | UL-94 | V-0 |
| ELECTRICAL PROPERTIES | ||
| Dielect.Strength (V/mil) short time,1/8″ thk | D149 | – |
| Surface Resistivity (ohm-cm) at 50% RH | EOS/ESD S11.11 | 10¹⁰- 10¹¹ |
ADVANTAGES:
* Surface and volume resistivity in the range of 10¹⁰ to 10¹¹ ohms/sq
* High stiffness / strength
* Dimensional stability
* Thermally stable to temperature of 520°F /270°C without degradation
Semitron 420HR
| GENERAL PROPERTIES | ASTM OR UL TEST | TYPICAL VALUES | TYPICAL VALUES |
| ESD 420 | ESD 420 V | ||
| Colour | Black | ||
| PHYSICAL PROPERTIES | |||
| Specific Gravity (g/cm³) | D792 | 1.34 | 1.51 |
| Water Absorption,24 hrs (%) | D570 | 0.50 | 0.21 |
| MECHANICAL PROPERTIES | |||
| Tensile Strength (psi) | D638 | 11,500 | 10,000 |
| Tensile Modulus (psi) | D638 | 650,000 | 910,000 |
| Tensile Elongation at Yield (%) | D638 | 2 | 1.5 |
| Flexural Strength (psi) | D790 | 14,500 | 15,800 |
| Flexural Modulus (psi) | D790 | 650,000 | 910,000 |
| Compressive Strength (psi) | D695 | 23,800 | 22,300 |
| Compressive Modulus (psi) | D695 | 370,000 | 545,000 |
| Hardness,Rockwell | D785 | M118 | M110 |
| IZOD Notched Strength (ft-lb/in) | D256 | 1.0 | 0.5 |
| THERMAL PROPERTIES | |||
| Coeff. Of Thermal Expansion (x 10¯⁵in/in/°F) | E831 | 1.95 | 1.5 |
| Heat Deflection Temp (°F/°C) @ 264 psi | D648 | 410/210 | 420/216 |
| Glass Transition Temp (°F/°C) | D3418 | 410/210 | 420/216 |
| Max Operating Temp (°F/°C) | – | 340/171 | 340/171 |
| Thermal Conductivity BTU-in/ft²-hr-°F) | F433 | 1.51 | – |
| Flammability rating | UL-94 | V-0 | V-0 |
| ELECTRICAL PROPERTIES | |||
| Dielect.Strength (V/mil) short time,1/8″ thk | D149 | – | – |
| Dissipation Factor at 1 MHz | D150 | – | – |
| Surface Resistivity (ohm-cm) at 50% RH | EOS/ESD S11.11 | 10⁶-10⁹ | 10⁶-10⁹ |
ADVANTAGES:
* Thermally stable to temperatures of 420°F (215°C)
* High mechanical Strength
* Easily machined to tight tolerances
* UL94 V-O rated
