NEMA FR4 has high flexural, impact and bond strength at room temperatures. It retains good electrical properties under dry and humid conditions. It is used in the electrical industry and anywhere a high strength electrical insulator in humid or dry conditions is needed. NEMA FR4 is UL listed.
Sheet Sizes: 36"x48"; 48"x48"; 48"x96"; 48"x108"
Thickness: 0.031" to 5"
Color: Natural & Black
Specifications
| Density | 119 pcf / 0.69 pci |
| Maximum operating temperature | |
| - electrical | 266ºF (130ºC) |
| - mechanical | 284ºF (140ºC) |
| Water absorption | 0.05% |
| Hardness (Rockwell M) | 109 |
| Compression strength | 60,000 psi |
| Tensile strength | 50,000 psi |
| Flexural strength | 65,000 psi |
| Impact strength – Izod edgewise with grain | 12 ft-lb/in |
| Dielectric strength | 550 volts/mil |
| Dielectric constant (1,000,000 cycles/second) | 5 |
| Volume resistivity | 6 x 1,000,000 megohm-cm |
| Arc resistance | 100 sec |
| Parallel dielectric | 60kv |
| Surface resistivity | 1 x 1,000,000 megohms |
