DURAN® Glass Bends
Durable alternative for pneumatic conveying systems
SCHOTT offers high precision glass bends made from optimum
conveying systems. The transparency of the glass ensures simple
quality DURAN in a wide range of diameters with various
monitoring of the material flowing through. With its food
bend angles. For reliable protection against electrostatic
grade properties glass is perfectly suited for the food industry.
®
discharge, it is necessary to provide all tubing with copper
conductive tape. Resistance-free flow is ensured by accurately
High quality borosilicate glass is distinguished by its durability
matching the inner diameter of the glass bends to existing
and its favorable price/benefit ratio.
Technical Data of DURAN® Glass Bends
Glass type
Outside diameter
Lengths
Bending angle
Center line radius
Borosilicate Glass 3.3
35 up to 90 mm
500 up to 1300 mm
up to 90°
200 up to 610 mm
Physical Data
Coefficient of mean linear thermal
expansion (20 ºC; 300 ºC) (DIN ISO 7991)
3.3 10 -6K-1
Transformation temperature Tg (DIN ISO 7884-8)
525 ºC
Density at 25 ºC
2.23 g·cm-3
Modulus of elasticity E (Youngs modulus)
63·103 N·mm-2
Thermal conductivity w at 90ºC
1.2 W·m-1·K-1
Log of electric volume resistivity (·cm)
at 250º C
at 300º C
8.0
6.5
Chemical Resistance
Hydrolytic resistance (ISO 719)
Class HGB 1
Acid resistance (DIN 12116)
Class S 1
Alkali resistance (ISO 695)
Class A 2
Technical Data Copper Conductive Tape
(extract from manufacturer‘s data sheet)
Radial direction:
Axial direction:
Copper conductive tape applied
along outside radius of the bend
20 mm width
10 mm width
Material Properties
Backing Material
soft - copper
Colour
copper
Substrate thickness in mm
0,050 ± 10 %
Total thickness in mm
0,080 ± 10 %
Adhesive Properties
Soft copper
Type of adhesive
acrylic, electrically
conductive
Adhesive strength in N/cm (180 º peel from steel)
≥2
DURAN ®
Glass
Temperature performance (max.) in ºC
130
Short term temperature performance in ºC (ca. 1 h)
180
Flammability according to IEC 60454-2
flame retardant
Electrical Properties
Wall thickness
Fire polished ends
Ohmic resistance (testing area two times 1 cm2)
≤1
General Hints: Electrical properties will generally stay intact up to 80ºC,
however, they depend on the application / type of assembly. Customer
specific tests are strongly recommended.
DURAN® is a registered trade mark of the DURAN Group GmbH.
SCHOTT AG
Erich-Schott-Straße 14
95666 Mitterteich
Deutschland
Telefon +49 (0)9633/80-0
Fax +49 (0)9633/80-614
[email protected]
www.schott.com/tubing
4Cgb10.12.2015RP / Printed in Germany
Thermal Properties