Refractive index (nd) 1.47200 ]{|lGtK %
Dispersion (nF- nC) 0.00719 # ,97 ]
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 ~gHn>]S0
Thermal conductivity (W/(m * °C)) 1.14 T 8%!l40v
Average thermal capacity (KJ/ (kg * °C)) 0.83 O#p_ rfQ
Maximal operation temperature (°C) qz2`%8}F )
Short Term !\'H{,G
Long Term QcJC:sP\>
Thermal stability y%x:~.
500 %nG>3.%
450 g4YlG"O[~
375 HF"TS*
Density (g/cm3) 2.23 \S1W,H|
Elastic modulus E (kN/mm3) 64 7WY~v2SDF
Hardness (HK) 480 bC98<if
Poission's Ratio 0.2 SlHDBr!.z
Climatic resistance (ISO - 719 - HGB) Grade 1 sv!v`zh
Acid resistance Grade 1 6 EfBz
Alkali resistance Grade 1 Ab>Kf r#
Melting temperature (°C) 1680 UF u0{rY_
Working Point (°C) 1252 q2'}S
A/
Softening Point (°C) 820 ± 10 +6$ -"lf
Annealing Point (°C) 560 ± 10 )WW*X6[k
Stress Point (°C) 510 ± 10 ofw&? S k0
Surface Tension (dyn/cm) 340-350 (1252 °C) l9OpaOVfJ
Dielectric constant (1MHz, 20°C) 4.6 !3\$XK]5ZT
Dielectric loss (1MHz, 20°C) 37 x 10-4 [@JK|50|K
Dielectric strength (50MHz, 25°C) Kv/mm 16 d{t@+}0.u
Color Code (λ5/λ80) 297.6/337.2 4:^MSgra
Volume Sensitivity (log ρ) nC!]@lA
250°C mBb3Ta
350°C *po
o.Zz
8.0 xx|D#Z}G
6.5 IG{Me
Environmental Protection Pb < 50 ppm MkjB4:"
As < 5 ppm f F)M'C
Cd < 5 ppm >;R`Q9s7
