Refractive index (nd) 1.47200 lU.@! rGbw
Dispersion (nF- nC) 0.00719 Hd)4_
uBt
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 9YpD\H`
Thermal conductivity (W/(m * °C)) 1.14 'DQKpk'
Average thermal capacity (KJ/ (kg * °C)) 0.83 Ui 7S8c#tH
Maximal operation temperature (°C) 7m=tu?@
Short Term x AD: Z "
Long Term ]W%<<S
Thermal stability d1#;>MiU
500 ; ,]T|> M
450
sD* 8:Hl
375 igsJ a1F
Density (g/cm3) 2.23 ]|[oL6"
Elastic modulus E (kN/mm3) 64 fgP_NYfOj
Hardness (HK) 480 ALiXT8q
Poission's Ratio 0.2 ?j8F5(HF?
Climatic resistance (ISO - 719 - HGB) Grade 1 |}\et
ecB
Acid resistance Grade 1 }cG!93
Alkali resistance Grade 1 aQaO.K2
Melting temperature (°C) 1680 "el}@
Working Point (°C) 1252 N$ H0o+9-Y
Softening Point (°C) 820 ± 10 </|IgN$w`
Annealing Point (°C) 560 ± 10 _{6QvD3kg.
Stress Point (°C) 510 ± 10 W^q;=D6uh
Surface Tension (dyn/cm) 340-350 (1252 °C) IXugnvyV
Dielectric constant (1MHz, 20°C) 4.6 { CkxUec
Dielectric loss (1MHz, 20°C) 37 x 10-4 'k#^Z
Dielectric strength (50MHz, 25°C) Kv/mm 16 M
yr [
Color Code (λ5/λ80) 297.6/337.2 J]~LmSh
Volume Sensitivity (log ρ) ZO+c-!%[(
250°C ]dc^@}1bN
350°C k9.2*+vvg
8.0 Bls\)$
6.5 t+5JIQY>
Environmental Protection Pb < 50 ppm jnX9] PkJ
As < 5 ppm .S17O }
Cd < 5 ppm $ z]gy]F
