Refractive index (nd) 1.47200 5I1YB+$}e
Dispersion (nF- nC) 0.00719 R*2N\2
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 TP {\V>*Yz
Thermal conductivity (W/(m * °C)) 1.14 mj e9i
Average thermal capacity (KJ/ (kg * °C)) 0.83 J&fIW Z
Maximal operation temperature (°C) 1E
/ G+pm
Short Term *cCx] C.~
Long Term 0$c(<+D
Thermal stability _q #pEv
500 <!FcQVH+L
450 "5<!
375 Qt {){uE
Density (g/cm3) 2.23 YR0AI l:L
Elastic modulus E (kN/mm3) 64 2^
]^Yc
Hardness (HK) 480 Z\` SD C
Poission's Ratio 0.2 SO *oBA'
Climatic resistance (ISO - 719 - HGB) Grade 1 T=u"y;&L
Acid resistance Grade 1 ?xH{7)dO
Alkali resistance Grade 1 M>m!\bb%.
Melting temperature (°C) 1680 2"Wq=qy\J
Working Point (°C) 1252 (?8i^T?WP=
Softening Point (°C) 820 ± 10 _,60pr3D'
Annealing Point (°C) 560 ± 10 C.:S@{sK
Stress Point (°C) 510 ± 10 n0co*
]X+k
Surface Tension (dyn/cm) 340-350 (1252 °C) BK4S$B
Dielectric constant (1MHz, 20°C) 4.6 z "yW):X
Dielectric loss (1MHz, 20°C) 37 x 10-4 Be@g|'r
Dielectric strength (50MHz, 25°C) Kv/mm 16 JD0s0>q_
Color Code (λ5/λ80) 297.6/337.2 c}n66qJF5
Volume Sensitivity (log ρ) \9OKf|#j
250°C i"iy 0 ?
350°C frPQi{u$
8.0 yp$jLBA
6.5 #~/9cVm$
Environmental Protection Pb < 50 ppm A s >Og
As < 5 ppm [zN* P$U]
Cd < 5 ppm (_ :82@c
