Material: fused quartz / silica glass

Tolerances:+/-0.1mm

Clear and clean

Free of air bubble/airline/scratch

Customer-designed quartz glass products

Parameter:

Density: 2.203 g/cm³

Hardness: 7 (Modified Scale); 5.36.5 (Mohs Scale)

Tensile strength: 48.3 MPa

Compressive strength: >1.1 GPa

Bulk modulus: ~37 GPa

Rigidity modulus: 31 GPa

Young's modulus: 71.7 GPa

Poisson's ratio: 0.16

Coefficient of thermal expansion: 5.5×10-7 cm/(cmK) (average from 20°C to 320°C)

Thermal conductivity: 1.3 W/(mK)

Heat capacity: 45.3 J/mol

Softening point: c. 1730°C

Annealing point: c. 1180°C

Strain point: 1075°C

Electrical resistivity: >1018 Ω×m

Dielectric constant: 3.75 at 20°C 1 MHz

Dielectric loss factor: less than 0.0004 at 20°C 1 MHz

Index of refraction at 587.6 nm (nd): 1.4585

Our Services

Questions and Help

If you have any questions concerning products, please contact us.

Order Acceptance and Pricing

ZCQ will provide a Pro Forma Invoice as confirmation on customers’ order.

Production will be arranged in line with technical specification within the invoice once payment received.

Payment Terms

Advanced T/T Credit Card Payments: ZCQ accepts Visa, MasterCard, and American Express.

We also accept Paypal payment.

Shipping & Handling

Freight Policy: If you have a freight collect account with any shipping carrier, please tell us in advance.

Or we will advise you an most economic method of shipment before checkout.

Return/Guarantee Policy

A Return Merchandise is to be returned on the original shipping form. Returns may be subject to freight. Credit will not be issued until the return has been received and inspected by ZCQ. Please send us an email and include your order numbe.

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