Refractive index (nd) 1.47200 6FmgK"t8
Dispersion (nF- nC) 0.00719 p}!pT/KmpH
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 U{}7:&As
Thermal conductivity (W/(m * °C)) 1.14 R"=M5
Average thermal capacity (KJ/ (kg * °C)) 0.83 h
,n!x:zy@
Maximal operation temperature (°C) .KLuGb3JJ
Short Term N|)V/no 6
Long Term VA%i_P,
Thermal stability W P&zF$
500 f:0n-me
450 ;C<A}
375 CKur$$B
Density (g/cm3) 2.23 NNdS:(
Elastic modulus E (kN/mm3) 64 l`]!)j|+
Hardness (HK) 480 Bx)&MYY}[[
Poission's Ratio 0.2 &ivIv[LV
Climatic resistance (ISO - 719 - HGB) Grade 1 n 3]y$wK
Acid resistance Grade 1 .KSGma6]
Alkali resistance Grade 1 [P,nW/H
Melting temperature (°C) 1680 1GdgF?4
Working Point (°C) 1252 f$'D2o, O
Softening Point (°C) 820 ± 10 ?yb{DZ46
Annealing Point (°C) 560 ± 10 zK92:+^C
Stress Point (°C) 510 ± 10 m>!#}EJ|
Surface Tension (dyn/cm) 340-350 (1252 °C) sJlKN
Dielectric constant (1MHz, 20°C) 4.6 7EXmmB~>,
Dielectric loss (1MHz, 20°C) 37 x 10-4 /0uinx
Dielectric strength (50MHz, 25°C) Kv/mm 16 &$Lm95
Color Code (λ5/λ80) 297.6/337.2 *)1z-rH`
Volume Sensitivity (log ρ) *2MTx
250°C n58jB:XR(
350°C D=vq<X'
8.0 *ZGN!0/
6.5 y<b0z\
Environmental Protection Pb < 50 ppm LNE[c
As < 5 ppm NZ5~\k
Cd < 5 ppm F! e`i-xt