Refractive index (nd) 1.47200 _-6e0sr Z
Dispersion (nF- nC) 0.00719 V{FE [v_
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 ixzTJ]y u
Thermal conductivity (W/(m * °C)) 1.14 'g]=.K+@}
Average thermal capacity (KJ/ (kg * °C)) 0.83 'f6PjI
Maximal operation temperature (°C) @% H8"A
Short Term w~{| S7/
Long Term s@z{dmL
Thermal stability YJc%h@ _=]
500 v\'rXy
450 Y.9~Bo<<r
375 yP%o0n/"x
Density (g/cm3) 2.23 r!~(R+,c
Elastic modulus E (kN/mm3) 64 Lb^(E-
Hardness (HK) 480 mw Z'=H
Poission's Ratio 0.2 [NZ-WU&&LP
Climatic resistance (ISO - 719 - HGB) Grade 1 a!?.F_T9A
Acid resistance Grade 1
Db,= 2e
Alkali resistance Grade 1 )+*{Y$/U
Melting temperature (°C) 1680 j,4,zA1j|
Working Point (°C) 1252 b^%?S8]h
Softening Point (°C) 820 ± 10 +/w(K,
Annealing Point (°C) 560 ± 10 <g*.p@o
Stress Point (°C) 510 ± 10 Fj,(_^
Surface Tension (dyn/cm) 340-350 (1252 °C) Li ij{ahm
Dielectric constant (1MHz, 20°C) 4.6 Gj5>Y!9
Dielectric loss (1MHz, 20°C) 37 x 10-4 ) (+)Q'*
Dielectric strength (50MHz, 25°C) Kv/mm 16 ;*.(.
Color Code (λ5/λ80) 297.6/337.2 %P(;8sS
Volume Sensitivity (log ρ) PlF!cr7:4
250°C {:3.27jQ
350°C q`cEA<~S
8.0 ?LR"hZ>
6.5 @Mzz2&(dU
Environmental Protection Pb < 50 ppm Vj/fAHR`>'
As < 5 ppm 90?,-6
Cd < 5 ppm erXy>H[;