Refractive index (nd) 1.47200 ,Z?m`cx
Dispersion (nF- nC) 0.00719 nc-Qz
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 5W|u5AIw
Thermal conductivity (W/(m * °C)) 1.14 d~3GV(M
Average thermal capacity (KJ/ (kg * °C)) 0.83 wJ/~q)
Maximal operation temperature (°C)
Hl!1h%
Short Term 2S'AIuIew
Long Term 8KZ$F>T]>
Thermal stability y>%W;r)
500 ]u~Os<
450 0}6QO
375 .:T9pplq
Density (g/cm3) 2.23 R2SBhs,+R
Elastic modulus E (kN/mm3) 64 Rnz8 f}
Hardness (HK) 480 iY}QgB< M
Poission's Ratio 0.2 M&eQ=vew.
Climatic resistance (ISO - 719 - HGB) Grade 1 f>p; siR)
Acid resistance Grade 1 {a[Uv
Alkali resistance Grade 1 icU"Vyu
Melting temperature (°C) 1680 QXsfp
Working Point (°C) 1252 ys/`{:w8p
Softening Point (°C) 820 ± 10 LPb]mC6#
Annealing Point (°C) 560 ± 10 vi^z5n
Stress Point (°C) 510 ± 10 [2 =^C=52
Surface Tension (dyn/cm) 340-350 (1252 °C) Pu1GCr(
Dielectric constant (1MHz, 20°C) 4.6 7xz#D4[
Dielectric loss (1MHz, 20°C) 37 x 10-4 vY4WQbz(
Dielectric strength (50MHz, 25°C) Kv/mm 16 >\Z lZ
Color Code (λ5/λ80) 297.6/337.2 8rla0d@
Volume Sensitivity (log ρ) is64)2F](
250°C $U\!q@'$
350°C "sdcP8])d
8.0 nR(#F 9
6.5 i?lX,9%
Environmental Protection Pb < 50 ppm 3O #~dFnp
As < 5 ppm ="/R5fp
Cd < 5 ppm jM{qRfOrg