Refractive index (nd) 1.47200 A=LyN$ %
Dispersion (nF- nC) 0.00719 XH_XGzBQS
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 g3r4>SA
Thermal conductivity (W/(m * °C)) 1.14 e;1n!_l\
Average thermal capacity (KJ/ (kg * °C)) 0.83 F9DY\EI
Maximal operation temperature (°C) Z^AOV:|m
Short Term }}AooziH9
Long Term q8U*
Thermal stability [yzDa:%
500 k 7 !{p
450 4CR.=
375 ]JQ';%dne
Density (g/cm3) 2.23 m_{?py@tZ
Elastic modulus E (kN/mm3) 64 [ugBVnma
Hardness (HK) 480 iOCx7j{BS
Poission's Ratio 0.2 'Xl[ y
Climatic resistance (ISO - 719 - HGB) Grade 1 F Bn`sS8hH
Acid resistance Grade 1 nwH'E
Alkali resistance Grade 1 k)VoDxMKK
Melting temperature (°C) 1680 U#=Q`
Working Point (°C) 1252 h{ s - e.
Softening Point (°C) 820 ± 10 %O$4da"y
Annealing Point (°C) 560 ± 10 +bi%4DA
Stress Point (°C) 510 ± 10 <S*o}:iB
Surface Tension (dyn/cm) 340-350 (1252 °C)
'g<0MOq{
Dielectric constant (1MHz, 20°C) 4.6 ,j{$SuZ M
Dielectric loss (1MHz, 20°C) 37 x 10-4 `4 Jlf!
Dielectric strength (50MHz, 25°C) Kv/mm 16 v!oXcHK/
Color Code (λ5/λ80) 297.6/337.2 F8(6P 1}E
Volume Sensitivity (log ρ) Ol8ma`}Nq3
250°C 577H{;pW
350°C [12^NEt
8.0 N%1T>cp0
6.5 ~HbZRDcJc
Environmental Protection Pb < 50 ppm AL #w
As < 5 ppm 2jQ|4$9j
Cd < 5 ppm _e/>CiN/
