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Ohara Clearceram-Z Ultra-Low Expansion Glass-Ceramic

Ohara Clearceram-Z Ultra-Low Expansion Glass-Ceramic

Product Item : RT20220507001#
Category： Materials
Type: Ohara Optical Substrate
Substrate: Ohara Clearceram Ccz
Ccz Regular: 0.0(+-)1.0*10(-7)/Celsuis Degree
Ccz HS: 0.0(+-)0.2*10(-7)/Celsuis Degree
Product description：Ohara Clearceram-Z Ultra-Low Expansion Glass-Ceramic/Ohara Ccz/Microcrystalline Glass
INQUIRY

General Introduction: Raytek offers OHARA Microcrystalline glass and Schott Microcrystalline glass widely used in optical system. This material was developed by OHARA based on our knowledge of High Homogeneity melting and Precise Crystallization. This material is produced under tightly controlled conditions and offers outstanding thermal, mechanical and chemical properties.

Products Name: OHARA Clearceram-Z Ultra-low Expansion glass-ceramic
Alias:Ohara Clearceram-Z glass-ceramic, Ohara CCZ glass-ceramic, Ohara CCZ HS glass-ceramic, Ohara CCZ glass, Ohara CCZ HS glass, Ohara Clearceram Ultra-low expansion glass, Ohara CCZ, Ohara CCZ-HS, Ohara Clearceram CCZ,Ohara Clearceram CCZ Hs, OHARA Microcrystalline glass etc

Main Characteristics:
Extraordinary features
1) The zero expansion glass ceramics have special properties. When the temperature changes, the change of geometry and distance is almost zero.
2) Very low coefficient of thermal expansion (CTE), suitable for a wide range of temperatures
3) Excellent CTE uniformity throughout the material
4) The degree of defect is very low
5) A variety of accurate geometric shapes can be obtained by grinding process
6) When the residual roughness is less than 1 nm, the surface may be very smooth
7) Excellent chemical stability
8) All of these features enable extraordinary reproducibility for small components and for large ton telescopes used in astronomy

Thermal Expansion Properties:

Model	Coefficient of Thermal Expansion
CCZ Regular	0.0±1.0×10-7/˚C
CCZ HS	0.0±0.2×10-7/˚C
Coefficient of Thermal Expansion of is guaranteed for the temperature range of 0~50°C.

Thermal Conductivity:

ITEM	CCZ	CCZ HS
Thermal Conductivity (W/(m•K))	1.51	1.52
Thermal Diffusion (×10-4m2/s)	0.00762	0.00775
Speciﬁc Heat (kJ/(kg•K))	0.777	0.773

Mechanical Properties:

Item	Unit	CCZ	CCZ HS
Density	g/cm3	-	-
Yong's Module	GPa	90	90
Poisson's ratio		0.25	0.25
Compression strength	GPa	1.1
Bending strength	MPa	116	111
Tensile strength	MPa	55
Torsional rigidity	GPa	36	36
Vickers hardness	GPa	6.8	7.0
Knoop hardness	Kg/mm2	6.0	6.4
Abrasion Aa*	-	62	64
Coefficient of thermal expansion	cm/cmºC	-	-
Softening point	ºC	-	-
Annealing point	ºC	-	-
Strain point	ºC	-	-
Specific heat(26ºC)	kJ/kgK	2.55	2.55
Thermal conductivity ratio(26ºC)	cal/cm.sec.ºC	-	-
Thermal conductivity ratio(100ºC)	Cal/cm.sec.ºC	-	-

Main Applying Fields:

Applying Fields:

High tech application
Zero expansion glass ceramics have become a decisive factor in the performance and quality of many modern technology applications as following:
1).Platform and mirror for IC and LCD lithography equipment
2).Mirror substrate for segmented and large monolithic telescopes
3).Ultra light weight mirror blank
4).Technical standard for precision measurement
5).High precision mechanical parts, such as ring laser gyroscope

*****

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.
Matching processing equipments;
1).Single side lapping and polishing machines
2).Duble sided polishing machines
3).Ring throwing machines
4).DMG five-axis five-linkage spherical milling machine
5).DMG ultrasonic machining center
6).Super large scale gantry cnc machining center (2.0*2.0m)
7).Super large scale surface grinder (1.6m*1.6m)
8).CNC cutting machines
9).Thin plate cleaning machines
10).Ultrasonic trough cleaning machines
11).Plane interferometers
12).Two dimensional detectors
13).Ion beam polishing machines
14).Magnetorheological polishing equipments

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.

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