Refractive index (nd) 1.47200 NI33lp$V
Dispersion (nF- nC) 0.00719 J'4V_Kjg-
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 E !}~ j
Thermal conductivity (W/(m * °C)) 1.14 3*;S%1C^
Average thermal capacity (KJ/ (kg * °C)) 0.83 j/*4Wj[
Maximal operation temperature (°C) wTK>U`o
Short Term R @ Bnrk
Long Term 6gN>P%n
Thermal stability /FW{>N1
500 2nA/{W\ hC
450 0DgEOW9H
375 A.>TD=Nz
Density (g/cm3) 2.23 '>0rp\jC
Elastic modulus E (kN/mm3) 64 FNB4YZ6
Hardness (HK) 480 pG0Ca](
Poission's Ratio 0.2 Gp5[H}8K
Climatic resistance (ISO - 719 - HGB) Grade 1 %3A~&
Acid resistance Grade 1 ?K/N{GK%{
Alkali resistance Grade 1 "Z70
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Melting temperature (°C) 1680 vivU4:uH3
Working Point (°C) 1252 <|R`N)AV;
Softening Point (°C) 820 ± 10 Y~C;M6(P
Annealing Point (°C) 560 ± 10 PS3%V_2
Stress Point (°C) 510 ± 10 ]5`Y^hS_g
Surface Tension (dyn/cm) 340-350 (1252 °C) )AoF-&,w
Dielectric constant (1MHz, 20°C) 4.6 R7j'XU
Dielectric loss (1MHz, 20°C) 37 x 10-4 WEVV2BJ
Dielectric strength (50MHz, 25°C) Kv/mm 16
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Color Code (λ5/λ80) 297.6/337.2 :jU u_s}
Volume Sensitivity (log ρ) (TQhO$,
250°C A:5B6 Z
350°C s%p,cz;
,
8.0 DgB]y6~KXl
6.5 .6xIg+
Environmental Protection Pb < 50 ppm -|aNHZr
As < 5 ppm p? qW;1
Cd < 5 ppm 0b~ { l;
