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PROPERTIES OF GFK - BAR GRATINGS FROM POLYESTER RESIN

Mechanical properties
  Length Width
Ultimate tensile strength 300 Ìïà 200 Ìïà
Ultimate flexural strength 100 Ìïà 220 Ìïà
Ultimate compression strength 450 Ìïà 90 Ìïà
Tensile elasticity module 30000 Ìïà 15000 Ìïà
Flexural elasticity module 35000 Ìïà 18000 Ìïà
Compression elasticity module 20000 Ìïà 8000 Ìïà
Ultimate elongation 1,0-1,8% 1,0-1,8%
Impact strength (IZOD) 1600 1600
Shear strength 70 Ìïà 70 Ìïà
Electrical  properties
Specific resistance to current 10Å10-10Å15 Îì/ñì
Surface resistance 10Å10-10Å13 Îì
Breakdown strength 5 kV/ìì
Creep strength (CTI) ÊÀÇñ/ÊÂ500/ÊÑá00
Dielectric constant ìåíüøå 5
Loss factor 0.01
Thermal  properties
Linear heat expansion coefficient 12õÞÅ 61/Ê
Thermal conduction spec. heat capacity 0,2-0,4 Âò/ìÊ 1.0 -1.2 êÄæ/êãÊ
Continuously tolerated temperature -100Ñ+150Ñ
Martens test 200 Ñ
Other
Density 1.8 êã/äì
Water absorption 0,0015
Heat resistance B2.UL94V1. ASTMD 635
Fire resistance UL94 VO. DIN5510 S4 SR2 ST2. Ê1.