Refractive index (nd) 1.47200 ge~@}iO@
Dispersion (nF- nC) 0.00719 DXs an
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 hsC T:1i
Thermal conductivity (W/(m * °C)) 1.14 3gA %Q`"
Average thermal capacity (KJ/ (kg * °C)) 0.83 3U[O :
Maximal operation temperature (°C) nf.Ox.kM)
Short Term Y{YbKKM
Long Term M3(N!xT
Thermal stability hyI7X7Hy
500 sg2;"E@
450 ma.84~m
375 "4N&T#
Density (g/cm3) 2.23 1EyN
|m|
Elastic modulus E (kN/mm3) 64 ;*A'2ymXUT
Hardness (HK) 480 Nu5|tf9%A
Poission's Ratio 0.2 OW7
Climatic resistance (ISO - 719 - HGB) Grade 1 =)a24PDG
Acid resistance Grade 1 ,2@o`R.27
Alkali resistance Grade 1 xye-Z\-t
Melting temperature (°C) 1680 SyWZOE%p
Working Point (°C) 1252 3JnpI,By
Softening Point (°C) 820 ± 10 ` 2lS@
Annealing Point (°C) 560 ± 10 FY1iY/\Cn
Stress Point (°C) 510 ± 10 9]4Q@%
Surface Tension (dyn/cm) 340-350 (1252 °C) 3SVGx<,2
Dielectric constant (1MHz, 20°C) 4.6 Rs %`6et}\
Dielectric loss (1MHz, 20°C) 37 x 10-4 YvR bM
Dielectric strength (50MHz, 25°C) Kv/mm 16 ARH~dN* C
Color Code (λ5/λ80) 297.6/337.2 O2w-nd74U
Volume Sensitivity (log ρ) ~iL^KeAp
250°C >B BV/C'9
350°C AGlBvRX7e
8.0 F.9}jd{
6.5 ~tDYo)hH8
Environmental Protection Pb < 50 ppm SE'Im
As < 5 ppm broLC5hbQU
Cd < 5 ppm 8q2a8I9g