al2o3 Alumina Ceramic washers spacers sleeves shafts

Reputation depends on quality, quality comes from Hard!

Alumina Ceramic:

The main crystalline phase is α-A12O3. The density is 3.98 g/cm3 or more. The linear transmittance is 90% to 95% or more. The dielectric constant is greater than 9.8. The dielectric loss tangent is less than 2.5×10-4 (1GC), and the flexural strength is greater than 350-380 MPa. The breakdown strength is 6.0 to 6.4 kV/mm. Thermal expansion coefficient (6.5 ~ 8.5) × 10-6 / °C. Good alkali metal vapor corrosion resistance at high temperatures.
The raw material is Al2O3 with a purity of 99.99% or more, and a small amount of additives such as pure magnesium oxide, antimony trioxide or antimony trioxide are added, and continuous isostatic pressing, atmosphere sintering or hot press sintering is performed, and the grain size is strictly controlled. Highly dense transparent ceramic.Luminous tube for the manufacture of high pressure sodium lamps (working life can exceed 20,000 h). It can also be used as a microwave integrated circuit substrate, bearing material, wear-resistant surface material and infrared optical component material.

properties:

High hardness, high strength, wear resistance, corrosion resistance, high temperacture (1600°), good thermal diffusivity, good insulativity, low cost etc.

Data Sheet↓

Color: White/Ivory
Density: 6.0g/cm3
Zirconia Content: 94.4%
Gas permeability: 0
Water Absorption: 0
Crystal Size: 0.5um
Rockwell Hardness(45N): 78R45N
Vickers Hardness (Load 500g): 11.5(1175)Gpa(Kg/mm²)
Flexural Strength(20°C): 800Mpa
Compressive Strength(20°C): 2000Mpa
Modulus of Elasticity(20°C): 9.0 MPam1/2
Thermal Conductivity(20°C-400°C): 2.5W(m.K)
Thermal Expansion Coefficient: 9.6 10-6/°C
Thermal Shock Resistance: 250 △T°C

Application industry: Machinery, electronic, chemical, petroleum etc.
Specific application: Electrical ceramic substrate, plunger, sealing ring etc.

Company Information:

Shenzhen Hard Precision Ceramic CO.,Ltd founded in 2007, located in Shenzhen of China. We are a company that integrates development, design, molding, sintering, production and sales of precision ceramic products. After 10 years of development, we have cooperated with more than 2000 customers and 60 universities; Our factory covers an area of 2000 square meters, 50 employees, and annual production value of nearly 20 million. We have a higher visibility and better reputation in the same industry.Our products include ceramic rods, tubes, plates, blocks and precision parts for industrial. We have all-line high precision equipments from ceramic forming, sintering to precision machining. Hope for a wide range of sincere cooperation with customers at home and abroad.

Why Choose Us?
1.12 years of professional production industrial ceramics factory
2.High quality products with low price
3.High precision parts with lowest tolerance
4.Show time for production
5.Has a group of experienced, professional and efficient R&D team
6.Has a good reputation in China and abroad.

7.MOQ is not limited, small quantity is welcome.

8.Vigorous team and good after-sales service

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FAQ

Q: Are you trading company or manufacturer ?
A: We are factory.

Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 50% T/T in advance ,balance before shippment.

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