Corning Ule 7973 Low Expansion Glass/Corning Ule Glass/Corning 7973 Glass/Corning Ule/Corning Quartz

Description

General Introduction: Corning 7973 is a titania-silicate low expansion glass that has been tailored to meet the needs for mask and optical substrates for EUVL applications. 7973 has a similar composition to ULE 7972 glass and is made using the same flame deposition process. The lithography transition from 193nm to 13.4nm required a major design shift in stepper optics from refractive to reflective. In reflective optics, substrate materials should be purely passive. The incident light should reflect off of the multilayer coatings of the optics and the photomask without the introduction of any mechanical or optical distortion caused by the underlying substrate. To minimize distortion from the minute temperature changes and meet the stringent EUVL specifications, the substrates must have a near-zero coefficient of thermal expansion (CTE) and tightly controlled zero cross over range. The extremely low CTE requirements are specified in parts per billion per degree Celsius (ppb/C)..
Products Name: Corning ULE 7973 Low Expansion Glass
Alias: Corning 7973, Corning 7973 glass, Corning 7973 low expansion glass, 7973 glass, ULE 7973, ULE 7973 glass, 7973 low expansion glass ,etc
Optical and Thermal Properties:
Mechanical Properties:
1).Unless otherwise stated, all values @ 25 °C Elastic Modulus (E) 67.6 GPa
2).Shear Modulus 29.0 GPa
3).Bulk Modulus 34.1 GPa
4).Poisson's Ratio 0.17
5).Density 2.21 g/cm3
6).Knoop Hardness (200g load) 460 kg/mm2 Ultimate Tensile Strength 49.8 MPa
7).Specific Stiffness (E/ρ) 3.12 x 106 m
Chemical Durability:
1).Excellent resistance to weathering.
2).Exhibits virtually no surface clouding or electrical surface leakage when subject to attack by water, sulfur dioxide, and atmosphere  gases.
3).High Resistance to attack by nearly all chemical agents.
Main Applying Fields:
Matching Custom Manufacturing Serivce:
Including Moulding, CNC machining, Polishing, Particle beam processing, Magnetic flux conversion processing, Grinding, Coating, Lightweighting, Custom Shaping, Counterbores, Drilling & Coring, Edge & Bevel Polishing,3D Contouring, Bevels & Chamfers, Steps & Slots, Laser Cutting & Marking, Metrology & Inspection, Precision Pitch Polishing, Double-Sided Polishing, Optical Assembly, Measuring, etc.
Main Cooperation Materials Manufacturers:
CORNING, OHARA, SCHOTT, LEONI, AGC,HELLMA, NIKON,VITRON,C-LASER,ETC
Main Export Countries & Areas:

Usa, Uk, Japan, Germany, Spain, France, Swiss, Korea, Russia, Pakistan, India, Portugal, Canada, New Zealand, Australia, Saudi Arab, Turkey, Finland, Poland ,etc.

Raytekoptics Extra value added services offered:
1). Optical workcraft & process solution design;
2). Rough processing raw materials;
3). Semi finishing raw materials;
4). Fabricate custom sizes and shapes;
5). Design and supply custom coatings;
6). Modify and resurface customer supplied materials;
7). Drill holes, notch glass and provide beveled substrates;
8). Precision polish optics with non-standard aspect ratios;
Payment Method: by T/T or Western Union.
Delivery time: 7-10 days.
Quality Warranty: Ruitaiphotoelectric(Raytekoptics) offers quality warranty for our optics products with "3R" policy--return, replace & refund policy.
For any inferior-quality products, Ruitaiphotoelectric(Raytekoptics) is responsible for return, replacement and refund.

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