Refractive index (nd) 1.47200 -s]@8VJA"
Dispersion (nF- nC) 0.00719 $CZ'[` +
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 ,( NN)Oj
Thermal conductivity (W/(m * °C)) 1.14 q `UaJ_7
Average thermal capacity (KJ/ (kg * °C)) 0.83 KtHkLYOCG
Maximal operation temperature (°C) aP#/%
Short Term e9>~mtx
Long Term -_XTy!I
Thermal stability hw=~ %f;
500 /O~Np|~ v
450 ~ 7<M6F
375 A# Y:VavQ?
Density (g/cm3) 2.23 s;-AZr)
Elastic modulus E (kN/mm3) 64 LL==2KNUo
Hardness (HK) 480 qQ 8+gZG$R
Poission's Ratio 0.2 9dWz3b1[]
Climatic resistance (ISO - 719 - HGB) Grade 1 7mE9Zo1
Acid resistance Grade 1 2OQ\ z;s
Alkali resistance Grade 1 .eLd0{JtN
Melting temperature (°C) 1680 gF sqCx<q
Working Point (°C) 1252 O&,8X-Ix
Softening Point (°C) 820 ± 10 z jOOEv i
Annealing Point (°C) 560 ± 10 '.&Y)A6!
Stress Point (°C) 510 ± 10 Sb(OG 6
Surface Tension (dyn/cm) 340-350 (1252 °C) c= X+u O-
Dielectric constant (1MHz, 20°C) 4.6 u08QE,
Dielectric loss (1MHz, 20°C) 37 x 10-4 -+0kay%
Dielectric strength (50MHz, 25°C) Kv/mm 16 ?wFL\C
Color Code (λ5/λ80) 297.6/337.2 Z B`d&! W>
Volume Sensitivity (log ρ) bc3`x1)\^
250°C +wxsAGy_j
350°C 5lM2nhlf'b
8.0 h~ZLULW)B
6.5 @0d "^
Environmental Protection Pb < 50 ppm _W^;a
As < 5 ppm Nd&UWk^
Cd < 5 ppm y
G3aF(
