Low dielectric loss glass fiber Low dielectric names D glass fiber, have D3, Dk series. It is low density, low dielectric constant and low dielectric loss. It is an ideal reinforcement for making light weight and high performance radomes with high wave permeability and wide frequency band and print circuit board etc... Specifications D glass fiber Items D3 Dk Density g/cm3 2.30 2.30 Strength of virgin filament Mpa ≥2600 ≥2600 Elastic modulus GPa ﹥55 ﹥55 Dielectric constant 22℃10^10HZ ≦4.5 ≦5.0 Dielectric loss 22℃10^10HZ ﹤0.0035 ﹤0.0035 D glass fiber fabric Specification D3 Dk Thickness mm 0.22 0.22 Weight g/m2 210 210 Breaking strength N/100*25 Warp ≥1350 ≥1450 Weft fill ≥1000 ≥1050