Refractive index (nd) 1.47200 v{4K$o
Dispersion (nF- nC) 0.00719 Q:?]:i/*
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 *k'D%}N:
Thermal conductivity (W/(m * °C)) 1.14
8mTjf Br
Average thermal capacity (KJ/ (kg * °C)) 0.83 8XtZF,Du
Maximal operation temperature (°C) %Y8#I3jVJ
Short Term ~5$V8yfx h
Long Term yv| |:wZC
Thermal stability h,B ]5Of
500 *=i|E7Irg
450 +jD?h-]
375 _U)BOE0o
Density (g/cm3) 2.23 B:qH7`s
Elastic modulus E (kN/mm3) 64 wic"a
Y<m
Hardness (HK) 480 C!xq p
Poission's Ratio 0.2 hEAt4z0P
Climatic resistance (ISO - 719 - HGB) Grade 1 _ +Ww1f
Acid resistance Grade 1 9?B}CCE<LR
Alkali resistance Grade 1 [f["9(:
Melting temperature (°C) 1680 "o&_tB;O
Working Point (°C) 1252 ^sIxR*C[v
Softening Point (°C) 820 ± 10 O--
"\4
Annealing Point (°C) 560 ± 10 |T7 < !
Stress Point (°C) 510 ± 10 =fa!"$J3
Surface Tension (dyn/cm) 340-350 (1252 °C) [/uqH
Dielectric constant (1MHz, 20°C) 4.6 68 d\s4
Dielectric loss (1MHz, 20°C) 37 x 10-4 !7ct=L
Dielectric strength (50MHz, 25°C) Kv/mm 16 #
JHicx\8l
Color Code (λ5/λ80) 297.6/337.2 aRg/oA4}
Volume Sensitivity (log ρ) [eL?O;@BD
250°C v!(BS,
350°C 2\&uO
8.0 B4AV ubMbe
6.5 O o9 ePw7
Environmental Protection Pb < 50 ppm 0/?V _
As < 5 ppm hnha1
f
Cd < 5 ppm >0kn&pe7#T