Borofloat

BoroFloat^®: Outstanding Multi-Talented Glass for Advanced Technical Applications

BOROFLOAT^® 33 borosilicate glass is manufactured by Schott, and is globally recognized for high-quality, multi-functional float glass

Its wide range of outstanding product properties, such as its high thermal and chemical resistance, its excellent transparency and its good surface quality, allow access to new and high tech special glass applications.

BOROFLOAT^® has proven itself in many traditional applications and there is an increasing area of usage in new and technically sophisticated special glass applications such as electrophoresis, microfluidics and photovoltaics.

Glass Code: Schott			Borofloat 33
Type			Borosilicate
Color			Clear
Principal Use			Industrial
Thermal Expansion Multiply by 10^-7cm/cm/°C	0 - 300°C.		32.5
Max. Operating Temp. ° C	Short Term < 10 hours		500
	Long Term > 10 hours		450
Thermal Shock Resistance (20x20 cm²) data is approx.	<3.8mm Thick		175K
	5.0-5.5mm Thick		160K
	6.5-15.0 mm Thick		150K
Viscosity Data (This data is subject to normal manufacturing variations.)	Strain point °C.		518
	Annealing point °C.		560
	Softening point °C.		820
	Working point °C.		1270
Density g/cm³			2.2
Young's Modulus (64 Kn/mm²)			64
Poisson's Ratio			0.2
Refractive index		435.8 nm	1.480
		546.1nm	1.473
		589.3 nm	1.471
		656.3 nm	1.469
Stress-Optical Coefficient, in MPa^-1 K			4.0 x 1