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| Product Name: |
sapphire/ruby property
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| Specifications |
08 |
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Features:
General
Chemical Formula Al2O3
Crystal System Trigonal
Class Hexagonal-scalenohedral
Melting Temperature 2030oC
Thermal
Thermal Expansion Parallel to C-axis: 6.7?0-6
Perpendicular to C-axis: 5.0?0-6
Specific Heat 0.18 Cal/gmoK£¨25℃£©
Mechanical
Density 3.98 ~ 4.1g/cm3
Hardness 9Moh’s Scale Hv¡Ý1700kg/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 £¾1016¦¸/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 300oC |
| Company: |
Boen M&E Co.,Ltd (Dalian)
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| Contact: |
Ms. Linda Linda |
| Address: |
No.18,Huirunyuan, Zhangxin Rd,Dalian, China |
| Postcode: |
116021 |
| Tel: |
86-0411-84971292 |
| Fax: |
86-0411-84971292 |
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