Borofloat® Glass

BOROFLOAT^® 33

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.

BOROFLOAT®: SCHOTT 33 Borosilicate Glass
Glass Code: Schott		Borofloat® 33
Type		Borosilicate
Color		Clear
Principal Use		Industrial
Thermal Expansion Multiply by 10^-7 cm/cm/°C	0 -300°C	32.5
Maximum Operating Tempature °C	Short Term < 10 Hours	500
Maximum Operating Tempature °C	Long Term > 10 Hours	450
Thermal Shock Resistance (20x20 cm²) data is Approximately	< 3.8mm Thick	175K
	5.0 - 5.5mm Thick	160K
	6.5 - 150mm 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 q/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
		1.469
Stress-Optical Coefficient, in MPa^-1 K		4.0 x 1

Key Notes:

Available in thickness from 0.7mm to 25.4mm