Refractive index (nd) 1.47200 7AT8QC`u
Dispersion (nF- nC) 0.00719 [.xY>\e
Coefficient of Linear thermal expansion (x10-6/°C) 3.25 Lg!E
Thermal conductivity (W/(m * °C)) 1.14 4Xa]yA =
Average thermal capacity (KJ/ (kg * °C)) 0.83 ?<3 d
Fb
Maximal operation temperature (°C) c:.5@eq^
Short Term i@?|vu
Long Term {c_bNYoE
Thermal stability sGhw23
500 -+1O*L!
450 0~RD@>]
375 hDB(y4/
Density (g/cm3) 2.23 5Z; 5?\g
Elastic modulus E (kN/mm3) 64 2?q>yL! Gz
Hardness (HK) 480 TCRTC0_}k
Poission's Ratio 0.2 NN'pBUR
Climatic resistance (ISO - 719 - HGB) Grade 1 CqC
)H7A
Acid resistance Grade 1 W7uX
Alkali resistance Grade 1 'pIrwA^6N
Melting temperature (°C) 1680 pu/5#[MC)^
Working Point (°C) 1252 : H;S"D
Softening Point (°C) 820 ± 10 6Y]P7j
Annealing Point (°C) 560 ± 10 o[_,r]%+D
Stress Point (°C) 510 ± 10 mm+V*L{x
Surface Tension (dyn/cm) 340-350 (1252 °C) vi^YtA
Dielectric constant (1MHz, 20°C) 4.6 GIEQD$vy
Dielectric loss (1MHz, 20°C) 37 x 10-4 Ds"%=
Dielectric strength (50MHz, 25°C) Kv/mm 16 K1J |\!o
Color Code (λ5/λ80) 297.6/337.2 &v((tZ
Volume Sensitivity (log ρ) uoE+:,P
250°C tT)s,R%
350°C 3GE;:;8B
8.0 oH0g>E;
6.5 ,v})
Environmental Protection Pb < 50 ppm xS12$ib ~G
As < 5 ppm Cscu
Cd < 5 ppm >qNpY(Ql