Refractive index (nd) 1.47200 "}x70q' >S
Dispersion (nF- nC) 0.00719 {^19.F
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 fvBC9^3
Thermal conductivity (W/(m * °C)) 1.14 mBgx17K/-_
Average thermal capacity (KJ/ (kg * °C)) 0.83 [,A'
Maximal operation temperature (°C) A[,"jh
Short Term <!HD tN
Long Term 9 0if:mYA
Thermal stability m&z %kVsg]
500 Zz*mf+
450 9kg>)ty@
375 |`D5XRVbi
Density (g/cm3) 2.23 ToXFMkwY
Elastic modulus E (kN/mm3) 64 @U.}Ei
Hardness (HK) 480 d@`:9
G 3
Poission's Ratio 0.2 i. dAL)V
Climatic resistance (ISO - 719 - HGB) Grade 1 e =Tc(Mwn
Acid resistance Grade 1 (Gk]<`d#N
Alkali resistance Grade 1 _j<M}
Melting temperature (°C) 1680 /g- X=|?F
Working Point (°C) 1252 3$G25=eN
Softening Point (°C) 820 ± 10 ^EBM ;&;7
Annealing Point (°C) 560 ± 10 A)a+LW'=u
Stress Point (°C) 510 ± 10 LYT<o FE-
Surface Tension (dyn/cm) 340-350 (1252 °C) EsxTBg
Dielectric constant (1MHz, 20°C) 4.6 [Ik
B/Xbw|
Dielectric loss (1MHz, 20°C) 37 x 10-4 9oN'.H^
Dielectric strength (50MHz, 25°C) Kv/mm 16 (']z\4o
Color Code (λ5/λ80) 297.6/337.2 9d (v^T
Volume Sensitivity (log ρ) p~;z"Z
250°C p C.P
350°C 7XC}C+
8.0 ^aM/BS \
6.5 0YRYCO$
Environmental Protection Pb < 50 ppm ]x{ H
As < 5 ppm :< 3;7R'5
Cd < 5 ppm (e IxU&o'
