Refractive index (nd) 1.47200 <e6#lFQqK
Dispersion (nF- nC) 0.00719 D&y7-/
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 ;2QP7PrSY
Thermal conductivity (W/(m * °C)) 1.14 3JR+O <3D
Average thermal capacity (KJ/ (kg * °C)) 0.83 +N U G
Maximal operation temperature (°C) @r1_U,0e
Short Term ?:0Jav
Long Term ef4 i :.
Thermal stability Z% UP6%
500 >A"(KSNL
450 G3T]`Atf
375 Q~9^{sHZjP
Density (g/cm3) 2.23 ]`WJOx4
Elastic modulus E (kN/mm3) 64 QMm%@z H
Hardness (HK) 480 ;O,jUiQ
Poission's Ratio 0.2 } Q+|W=2t
Climatic resistance (ISO - 719 - HGB) Grade 1 C0Z=~Q%
Acid resistance Grade 1 q)
KKvO
Alkali resistance Grade 1 JucY[`|JV
Melting temperature (°C) 1680 aN3;`~{9
Working Point (°C) 1252 Aos+dP5h,8
Softening Point (°C) 820 ± 10 owv[M6lbD
Annealing Point (°C) 560 ± 10 B9S@(/"7
Stress Point (°C) 510 ± 10 "m>81-0
Surface Tension (dyn/cm) 340-350 (1252 °C) 'J|_2*
Dielectric constant (1MHz, 20°C) 4.6 )+Pus~w
Dielectric loss (1MHz, 20°C) 37 x 10-4 ~g t@P
Dielectric strength (50MHz, 25°C) Kv/mm 16 '|=;^Z7.K
Color Code (λ5/λ80) 297.6/337.2 9lE_nc
Volume Sensitivity (log ρ) %;!.n{X
250°C TA~{1_l
350°C j] [,J49L
8.0 xgtR6E^k
6.5 /Z4et'Lo
Environmental Protection Pb < 50 ppm gBD]}vo-
As < 5 ppm c:.eGH_f
Cd < 5 ppm Wc
'H
