HGL GLASS FACTORY's concrete physical chemistry performance is as follows:
including silicon quantity above 80%,
strain temperature 520℃,
annealing temperature 560℃,
softening point 820℃,
refractive index 1.47,
transmittance (2mm) 92%,
elasticity coefficient 67KNmm-2, tensile strength 40-120Nmm-2,
processing temperature (104dpas) 1220℃,
thermal-expansion coefficient (20-300℃) 3.3×10-6K-1,
therefore bears the heat shock high performance. ,
heat-resisting temperature difference: 270 degrees (this data is very essential),
the density (20℃) 2.23gcm-1,
specific heat 0.9Jg-1K-1,
thermal conductivity 1.2Wm-1K-1,
the water resistant performance (ISO 719) 1 level,
the acid resistance (ISO 195) 1 level,
the kali resistivity can (ISO 695) 2 levels,
the heat-resisting emergency glass rod law glass rod φ6×30mm 300℃,