Refractive index (nd) 1.47200 r;fcBepO
Dispersion (nF- nC) 0.00719 9O:-q[K**
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 f:9qId
;/M
Thermal conductivity (W/(m * °C)) 1.14 p vu% p8
Average thermal capacity (KJ/ (kg * °C)) 0.83 z'EphL7r
Maximal operation temperature (°C) Aac7km
Short Term _6yrd.H
Long Term ~hU^5R-%
Thermal stability kwFo*1
{
500 m9aP]I3g]\
450 A2B]E,JMp
375 $tebNiP
Density (g/cm3) 2.23 Ak2Vf0E b
Elastic modulus E (kN/mm3) 64 W1UqvaR
Hardness (HK) 480 jL~. =QD
Poission's Ratio 0.2 SS-7y:6y>
Climatic resistance (ISO - 719 - HGB) Grade 1 5OC3:%g
Acid resistance Grade 1 X""}]@B9z
Alkali resistance Grade 1 it=ir9
Melting temperature (°C) 1680 1.j;Xo/+:V
Working Point (°C) 1252 <9?`zo$y
Softening Point (°C) 820 ± 10 5VlF\-
Annealing Point (°C) 560 ± 10 x]:B3_qR
Stress Point (°C) 510 ± 10 =,LhMy
Surface Tension (dyn/cm) 340-350 (1252 °C) T-lHlm
Dielectric constant (1MHz, 20°C) 4.6 [2zS@p
Dielectric loss (1MHz, 20°C) 37 x 10-4 Bj\ oo+L/
Dielectric strength (50MHz, 25°C) Kv/mm 16 Je~<2EsQ
Color Code (λ5/λ80) 297.6/337.2 ==~
lc;
Volume Sensitivity (log ρ) @X#e
250°C lQer|?#
350°C 6XGqZ!2
8.0 {hKf
'd9E
6.5 \H.1I=<
Environmental Protection Pb < 50 ppm i>@"&
As < 5 ppm 2aW"t.[j
Cd < 5 ppm Qx[
nR/