Refractive index (nd) 1.47200 3PgiV%]
Dispersion (nF- nC) 0.00719 t%Hy#z1W_
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 |Y|g T*v
Thermal conductivity (W/(m * °C)) 1.14 \'.#of
Average thermal capacity (KJ/ (kg * °C)) 0.83 fsH=2p
Maximal operation temperature (°C) ?/ Cl
Short Term 8e*1L:oB!
Long Term +c-?1j
Thermal stability r'~^BLT`#
500 G~fM!F0
450 0tyS=X;#e
375 '98 0.
Density (g/cm3) 2.23 Ql.abU
Elastic modulus E (kN/mm3) 64 60@]^g;$I
Hardness (HK) 480 zf}X%tp
Poission's Ratio 0.2 +`s%-}-r
Climatic resistance (ISO - 719 - HGB) Grade 1 lx"#S'^~
Acid resistance Grade 1 ZQ'bB5I
Alkali resistance Grade 1 YNV4'
Melting temperature (°C) 1680 >4@/x{{
Working Point (°C) 1252 4 g}'/
Softening Point (°C) 820 ± 10 E0-<-w3'
Annealing Point (°C) 560 ± 10 FEzjP$
Stress Point (°C) 510 ± 10 8dYPn+`
Surface Tension (dyn/cm) 340-350 (1252 °C) rj> _L
Dielectric constant (1MHz, 20°C) 4.6 F|3iKK022
Dielectric loss (1MHz, 20°C) 37 x 10-4 F,'rW:{HMt
Dielectric strength (50MHz, 25°C) Kv/mm 16 v(vJ[_&%
Color Code (λ5/λ80) 297.6/337.2 ~qj09
Volume Sensitivity (log ρ) :^[HDI-[2
250°C !&b
wFO>P
350°C hEv}g
8.0 e
)?~
6.5 @x@*=
Environmental Protection Pb < 50 ppm 3HI-G.]hC
As < 5 ppm ;R
x Rap
Cd < 5 ppm /
Hg/)