hardness 9.0 sapphire bearing for rolling bearing components/prolate ellipse/plano/Round Sapphire optical glass window sector sapphire glass/ sapphire window/sapphire optical plate for vacuum equipment watch window

Welcome to Know Sapphire~~

Synthetic sapphire is transparent single crystal 99.99% pure Al₂O₃ that exhibits a unique combination of physical, chemical, electrical and optical properties: high thermal conductivity, high strength and scratch resistance, hardness (9 on the Mohs scale), transparent in wide range of wavelength, chemical inertness.
High crystal perfection, low reactivity, and appropriate unit cell size make sapphire an excellent substrate in the semiconductor industry for blue light-emitting diodes (LED).
Since Nobel Laureate in Physics Shuji Nakamura used the sapphire substrate in 1990s for LED, the demand of sapphire crystal has been growing rapidly.

It drives development of new markets like general lighting, backside lighting in TV-sets, displays, consumer appliances, aerospace and defense, and other applications

Material

MAN MADE CORUNDUM PROPERTY
General	Chemical Formula	Al2O3
	Crystal System	Trigonal
	Class	Hexagonal-scalenohedral
	Melting Temperature	2030℃
Thermal	Thermal Expansion	Parallel to C-axis: 6.7× 10-6
		Perpendicular to C-axis: 5.0×10-6
	Specific Heat	0.18 Cal/gmoK(25℃)
Mechanical	Density	3.98 ~ 4.1g/cm3
	Hardness	9Moh’s Scale
		(Hv)≥1700kg/mm2
	Modulus Of Elasticity	340-380Gpa
	Compressive Strength	2.1Gpa
	Tensile Strength	0.19Gpa
Optical	Index of Refraction	Parallel to C-axis:1.769
		Perpendicular to C-axis:1.76
	Index of IR Transmission	85%
Electrical	Electrical Resistance	1016 Ω/cm(25°c)
	Dielectric Constant	7.5-10
Chemical	Corrosion Resistance	Can not be corroded by acid or alkali at normal temperature, only can be corroded by HF at 300℃

Sapphire processing

Sapphire body→Slicing→Edge Chamfering→Lapping→Annealing→Polishing→Inspection→Cleaning&Packing

Product details

Our related products

Sapphire optical lens Ruby Ge Crystal

1. We have the very Fast delivery capacity within 15days by Customized size
2. ​​We can fabricate the sapphire glass from rough material plate to polished window
3. In addition,we Support { ONE WEEK REFUND MONEY} if not qualified.
4. We also can make substrates, wafers, rods,Bump join; Lens with step＆hole

FAQ & CONTACT

Q:What is your minimum order requirement?
A:MOQ:1 piece

Q:How long will it take to execute my order ?
A:After confirming the payment.

Q:Can you give warranty of your products ?
A:We promise the quality, if the quality has any problems, we will produce new produces or return you money.

Q:How to pay?
A:T/T, Paypal, West Union, bank transfer and or Assurance payment on Alibaba and etc.

Q:Can you produce custom optics?
A:Yes, we can produce custom optics
Q:If you have any other questions,please do not hesitate to contact me.
A:Tel+:86-15801942596 or skype:wmqeric@sina.cn