Refractive index (nd) 1.47200 eSNSnh]'
Dispersion (nF- nC) 0.00719 '#PqI)P
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 0uO=wOIhH
Thermal conductivity (W/(m * °C)) 1.14 qK
vr*xlC
Average thermal capacity (KJ/ (kg * °C)) 0.83 2RUR=%C
Maximal operation temperature (°C) yUmsE-W
Short Term M6iO8vY
Long Term S/<"RfVU#o
Thermal stability
*3`oU\r
500 .`>l.gmi&
450 0/@ X!|X
375 355Sd;*
Density (g/cm3) 2.23 ;GFB@I@
Elastic modulus E (kN/mm3) 64 =/JF-#n/MA
Hardness (HK) 480 @@3,+7%1
Poission's Ratio 0.2 83ic@[
Climatic resistance (ISO - 719 - HGB) Grade 1 3u0<v%Qi
Acid resistance Grade 1 Tb1}XvZ
Alkali resistance Grade 1 fCf#zV[
Melting temperature (°C) 1680 _OU.JrqC
Working Point (°C) 1252 I,4-
Softening Point (°C) 820 ± 10 R =9~*9
Annealing Point (°C) 560 ± 10 ~J>gVg%66
Stress Point (°C) 510 ± 10 ~K-*q{6Q
Surface Tension (dyn/cm) 340-350 (1252 °C) BT#=Xh
Dielectric constant (1MHz, 20°C) 4.6 !H|82:`t+
Dielectric loss (1MHz, 20°C) 37 x 10-4 H]$=*(aje
Dielectric strength (50MHz, 25°C) Kv/mm 16 AOlt,MNpQ
Color Code (λ5/λ80) 297.6/337.2 G9n /S=R?
Volume Sensitivity (log ρ) rH&r6Xv[
250°C ]8m_* I!
350°C n^pZXb;Y
8.0 7XVzd]jH
6.5 FfxX)p1t
Environmental Protection Pb < 50 ppm &xBK\
As < 5 ppm 2'<=H76
Cd < 5 ppm grCO-S|j^