Fire-polished Grinding Crystal Pyrex Glass Disc

	ZS-1	ZS-2	HS
Spectral characteristics The average transmittance	180-2500nm	200-2500nm	260-3500nm
90%	85%	85%
Bubble class	0	2	2
Birefringence	1-2	1-2	1-2
Grain structure	1	2	2
Stripe	1-2	1-2	2
Uniformity	1-2	2	2
Fluorescence	1	2	2
Radiation Performance	Does not change color	Slight discoloration	Change color

Thermal properties	Standard value
Transformation point	1280°c
Softening point	1780°c
Annealing point	1250°c
Specific heat	670J/kg.°c
Thermal conductivity	1.4W/m.°c
Index of refraction	1.4585
Thermal processing temperature	1750 - 2050°c
Short-term use temperature	1300°c

Country: China (Mainland)
Founded Year: 2004
Address: No.2, 7th building, Xinyun block, Xinxiang City, Henan province, China.
Contact: Carrie Niu