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Wholesale Price China Cryogenic Bellows Seal - Alumina Ceramic Rings – Xindeng

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Technical Parameters

Operating Limits Units Alumina Ceramics Alumina Ceramics
Alumina Content wt% ≥ 99 ≥ 95
Volume Density g /cm3 3.85 3.7
Hardness  (HRA) HRA ≥ 88 86
Compressive Strength MPa ≥ 400 300
Maximum Temperature ℃  1500 1500
Air Tight Test   Pass Pass
Thermal Shock Test   Pass Pass
Coefficient Of Heat Expansion ×10-6/℃ 8.2 7.5
Dielectric Constant εr20℃, 1MHz 9.2 9
Dielectric Loss tanδ×10-4, 1MHz 2 3
Volume Resistivity Ω·cm 20℃ 1014 1013
Puncture Strength KV/mm , DC≥ 20 20
Acid-resistance mg/cm2 ≤ 0.7 7
Alkali-resistant mg/cm2 ≤ 0.1 0.2
Abrasion Resistance g/cm2 ≤ 0.1 0.2
Compressive Strength M Pa ≥ 2800 2500
Flexural Strength M Pa ≥ 350 200
Elastic Modulus G Pa 350 300
Poisson’s Ratio   0.22 0.2
Thermal Conductivity W/m·K( 20℃) 25 20

 

 


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Wholesale Price China Cryogenic Bellows Seal - Alumina Ceramic Rings – Xindeng detail pictures

Wholesale Price China Cryogenic Bellows Seal - Alumina Ceramic Rings – Xindeng detail pictures

Wholesale Price China Cryogenic Bellows Seal - Alumina Ceramic Rings – Xindeng detail pictures

Wholesale Price China Cryogenic Bellows Seal - Alumina Ceramic Rings – Xindeng detail pictures


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  • The factory workers have rich industry knowledge and operational experience, we learned a lot in working with them,we are extremely grateful that we can encount a good company has excellent wokers.
    5 Stars By Riva from Turkmenistan - 2018.02.08 16:45
    The supplier abide the theory of "quality the basic, trust the first and management the advanced" so that they can ensure a reliable product quality and stable customers.
    5 Stars By Sarah from Peru - 2017.04.18 16:45

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