Refractive index (nd) 1.47200 $=t&NM
Dispersion (nF- nC) 0.00719 7QzUw
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 `NrxoU=
Thermal conductivity (W/(m * °C)) 1.14 o ;.j_
Average thermal capacity (KJ/ (kg * °C)) 0.83 CmM K\R.
Maximal operation temperature (°C) Rs7=v2>I
Short Term kAU[lPt*R
Long Term =!
/S |
Thermal stability TN(1oJ:
500 MH1??vW
450 }VdohX-
375 tZwZZ0]Z
Density (g/cm3) 2.23 `5Q0U%`W
Elastic modulus E (kN/mm3) 64 sFMSH:5z
Hardness (HK) 480 M~=9ym
Poission's Ratio 0.2 A@+pvC&
Climatic resistance (ISO - 719 - HGB) Grade 1 ~`(#sjr6KR
Acid resistance Grade 1 "4|D"|wI)
Alkali resistance Grade 1 o|$l+TC
Melting temperature (°C) 1680 j$siCsF
Working Point (°C) 1252 *JUP~/Nr
Softening Point (°C) 820 ± 10 RoT}L#!!
Annealing Point (°C) 560 ± 10 b v~"_)C
Stress Point (°C) 510 ± 10 cd#@"&r
Surface Tension (dyn/cm) 340-350 (1252 °C) vEk
jd#
Dielectric constant (1MHz, 20°C) 4.6 &+Xj%x.]
Dielectric loss (1MHz, 20°C) 37 x 10-4 ma,H<0R
Dielectric strength (50MHz, 25°C) Kv/mm 16 C8%q?.nH=
Color Code (λ5/λ80) 297.6/337.2 pq*W;6(-
Volume Sensitivity (log ρ) 0DV
.1
250°C ;i@,TU
350°C ilHZx2k
8.0 txw:m*(%
6.5 LW
8LD|@
Environmental Protection Pb < 50 ppm FQ26(.
As < 5 ppm iG^o@*}a
Cd < 5 ppm +"'cSAK