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Long Term Grain Storage: How Long Can Grains Be Stored? (Wheat, Corn & Quinoa)
Whether you grow your grains or buy them in bulk, the correct long term grain …
99.7% Electrical Alumina Ceramic Substrate Al2O3 Porcelain Sheet For Electronic PCB Substrate Sheet
Product Description
Aluminua ceramics is a ceramic material mainly composed of aluminum oxide (Al2O3), used in thick film integrated circuits. Alumina ceramics have good conductivity, mechanical strength, and high temperature resistance. It should be noted that ultrasonic cleaning is required. Alumina ceramics are a widely used ceramic, and due to their superior performance, their applications in modern society have become increasingly widespread, meeting the needs of daily use and special performance.
Widely used in coal-fired power plants, steel, smelting, machinery, coal, mining, chemical, cement, port terminals and other enterprises' coal conveying, material conveying systems, pulverizing systems, ash discharge, dust removal systems and other heavily worn mechanical equipment, we can provide different types of products according to different needs.
Material data:
Performance | ||||||||||||||||
AL2O3% | 60 | 75 | 80 | 85 | 92 | 95 | 99 | 99.7 | ||||||||
Bulk Density (g/cm3) | 3.0 | 3.1 | 3.3 | 3.4 | 3.6 | 3.7 | 3.81 | 3.91 | ||||||||
Flexural strength (MPa) | 205 | 280 | 215.7 | 230 | 312 | 304 | 340 | 370 | ||||||||
Linear expansion coefficient (×10-6/C) （25-800C） | 7.1 | 7.6 | 7.6 | 7.6 | 7.5 | 7.3 | 7.6 | 7.6 | ||||||||
Thermal conductivity [w/(m.R)] | 16 | 17 | 17 | 17 | 18 | 20 | 34 | 35 | ||||||||
Dielectric strength (KV/mm) | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | ||||||||
Volume resistivity (Ω.cm) 20C | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 | >1014 | ||||||||
300C | >1013 | >1013 | >1013 | >1013 | >1013 | >1012 | >1010 | >1010 | ||||||||
Max C | 1350 | 1100 | 1300 | 1350 | 1500 | 1600 | 1700 | 1800 | ||||||||
Moh's hardness | 7.5 | 7.5 | 7.5 | 7.5 | 8.5 | 8.8 | 9 | 9 | ||||||||
Refractoriness | 1800 | 1700 | 1800 | 1850 | 1920 | 2000 | 2030 | 2040 | ||||||||
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FAQ
Q1: How can know your quality?
We can send you samples or sample material for you to check or test.Let our physical samples speak loudly.
Q2:Are these samples free of charge?
Some standard small samples are free.If same as your requirements,we will just charge for mould to support.
Q3:If products are not to requirement,how can you do?
We will try our every best to solove it.Meeting your requirement is our mission.
Q4:What's the lead time?
Normally,for standard items,will ship within 1-10 days.For mass production order,we will finish within 30 working days after we receive payment.
Q5:Payment terms:
We can negotiate.
We can send you samples or sample material for you to check or test.Let our physical samples speak loudly.
Q2:Are these samples free of charge?
Some standard small samples are free.If same as your requirements,we will just charge for mould to support.
Q3:If products are not to requirement,how can you do?
We will try our every best to solove it.Meeting your requirement is our mission.
Q4:What's the lead time?
Normally,for standard items,will ship within 1-10 days.For mass production order,we will finish within 30 working days after we receive payment.
Q5:Payment terms:
We can negotiate.
