PROFESSIONAL MANUFACTURER OF CHEMICAL INDUSTRY TUBE

CHEMICAL INDUSTRY TUBE

Category: Glass Tube

We offer CHEMICAL INDUSTRY TUBE to our customer with very good quality.

Features:

– Good sealing

– Excellent thermal shock resistance

– High light transmittance

– Material: 3.3 high boron silicon glass

Specification:

Mean coefficient of linear expansion α 20/300 acc. To ISO3585	3.3·10^-6 K^-1
Transformation temperature	525℃
10¹³ upper annealing point	560℃
10^7.6 softening point	825℃
10⁴ working point	1260℃
Maximum short-time working temperature	500℃
Density ρ	2.23 gcm^-3
Modulus of elasticity E	64.10³ N· mm^-2
Poisson’s ratio μ	0.20
Thermal conductivity λ w at90℃	1.2W· m^-1 K^-1
Temperature for the specific electrical resistance of 108 Ω·cm (DIN52326) tk 100	/250℃
Logarithm of the electric volume resistance ( Ω·cm)
at 250℃	8
at 350℃	6.5
Dielectric properties (1MHz,25℃)
Dielectric figure	4.6
Dielectric loss factor tan σ	37- 10^-4
Refractive index ( λ=587.6nm)	1.473
Stress-optical constant (DIN 52314)k	4.0·10^-6 mm² · N^-1