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Quartz Boat

Material: 99.99% fused quartz glass (SiO₂)
Size: customize
Technique: cutting, polishing
MOQ: 1 pcs

Description

Features

High-Temperature Resistance, Chemical Stability, Low Thermal Expansion Coefficient, Extremely low thermal expansion (5.5×10⁻⁷/°C), High Mechanical Strength

Application

Quartz glass is mainly used in electric light sources, semiconductors, new optical technologies, etc.

New light sources
Semiconductors
New technologies
Chemical industry
Metallurgy
Electrical engineering
Scientific research

Properties

Physical Properties	Values
Purity	＞99.99%
Density	2.2g/cm³
Transparency	＞90%
Mohs Hardness	5.5--6.5
Deformation Point	1280℃
Softening Point	1750℃
Annealing Point	1250℃
Specific Heat (20 - 350°C)	670J/kg.℃
Thermal Conductivity (20°C)	1.4W/m.℃
Heat Conductivity (w/m.k,1000 ℃ )	1.0-1.2
Refractive Index	1.4585
Coefficient of Thermal Expansion	5.5*10 ^-7cm/cm.℃
Hot - working Temperature	1750--2050℃
Short - term Service Temperature	1450℃
Long - term Service Temperature	1100℃

Chemical Properties	Values
Acid resistant	Strong Acid(except HF),Strong alkali, organic solution
High temperatures Corrosion resistant	Excellent
Metal Impurity Content	＜5 ppm

Electrical Properties	Values
Resistivity	7*10⁷Ω.cm
Insulation Strength	250~400Kv/cm
Dielectric Constant	3.7~3.9
Dielectric Absorption Coefficient	＜4*10^-4
Dielectric Loss Coefficient	＜1*10^-4

Mechanical Properties	Values
Compressive Strength	1100MPa
Bending Strength	67MPa
Tensile Strength	48MPa
Poisson's Ratio	0.14~0.17
Young's Modulus	72000MPa
Shear Modulus	31000MPa