Китайский производитель полировка класс глинозема абразивный порошок из коричневого корунда плавленого оксида алюминия для резки Полировочная
- Категория: >>>
- Поставщик: Henan,Yongzhikun,Water,Treatment,Materials,Co.,Ltd.
Поделиться:
Описание и отзывы
Трекер стоимости
| Месяц | Минимальная цена | Макс. стоимость |
|---|---|---|
| Aug-17-2025 | 1.88 $* | 1.67 $* |
| Jul-17-2025 | 1.60 $* | 1.47 $* |
| Jun-17-2025 | 1.32 $* | 1.73 $* |
| May-17-2025 | 1.80 $* | 1.54 $* |
| Apr-17-2025 | 1.60 $* | 1.1 $* |
| Mar-17-2025 | 1.17 $* | 1.20 $* |
| Feb-17-2025 | 1.73 $* | 1.46 $* |
| Jan-17-2025 | 1.86 $* | 1.31 $* |
Характеристики
PRODUCT DESCRIPTION
Corundum is a crystalline form of aluminium oxide (Al2O3) typically containing traces of iron, titanium, vanadium and chromium. It is a rock-forming mineral. It is also a naturally transparent material, but can have different colors depending on the presence of transition metal impurities in its crystalline structure. Because of corundum's hardness (pure corundum is defined to have 9.0 on the Mohs scale), it can scratch almost every other mineral. It is commonly used as an abrasive on everything from sandpaper to large tools used in machining metals, plastics, and wood. Some emery is a mix of corundum and other substances, and the mix is less abrasive, with an average Mohs hardness of 8.0. In addition to its hardness, corundum has a density of 4.02 g/cm3 (251 lb/cu ft), which is unusually high for a transparent mineral composed of the low-atomic mass elements aluminium and oxygen.
SPECIFICATION
Spec. | White Fused Alumina | Brown Corundum | Black Corundum |
Color | White | Brown | Black |
Crystal | Trigonal | Trigonal | Trigonal |
Raw Material | Alumina | Alumina, carbons, iron | Alumina, iron |
Mohs Hardness | 10.0 | ≥9.0 | ≥9.0 |
Al2O3 | 99% | 95%-97% | 70%～80% |
Fe2O3 | Extremely low | ≤0.5% | 10% |
True Densityg/cm3 | 3.90 | ≥3. 90 | ≥3.50 |
Melting Point（℃） | 2250 | 2250 | 2050 |
Maximum Service Temperature（℃） | 1900 | 1900 | 1850 |
Coefficient of Linear Expansion（0—1600℃） | 7—9 | 7—9 | 7—9 |
APPLICATION AREAS
REASONS TO CHOOES US
ABOUT US
Henan Yongzhikun Water Treatment Materials Co., Ltd.
We are a manufacturing enterprise integrating production and sales. The company has rich experience, superb technology and a strong team of employees. Adhering to the concept of “integrity-based, quality first”, we have been well received by customers from domestic and overseas. The company seeks a long-term stable development.
PRODUCT DEPARTMENT
The factory provides all kinds of high quality products: abrasives, activated carbons, drying agent, chemical water treatment materials and nano crystallines with preferential price to achieve win-win cooperation with you.
SALES DEPARTMENT
Our team has brand new ideas and concepts. We are nurturing the same ideal and goal, with different starting points but the same purpose. At this moment, we gather together, unite as one, break through the storm and set sail.
FAQ
1) Are you a trading company or factory?
-Our department is mainly for trading and we have our own factory.
2) Do you provide samples?
2) Do you provide samples?
-Yes, we can provide you some free samples, you only need to pay for the transportation expense.
3) How to choose the right product?
-Please tell us some details about the product you need, such as the iodine adsorption value, shape, size, usage and so on. Then we can recommend the suitable product for you.
4) Could you give me a discount?
-Yes, we can have a negotiation.
5) Where is your factory located? office and factory together?
- Our factory is located in Henan, China. The sales department is in an administration building that near our factory.
6) Which markets/countries do you supply?
-We supply to all countries as long as there's a suitable port at which our products can arrive.
7) Has your factory completed any 3rd party audits?
-Yes, our factory does complete 3rd party audits.
8) Do you have SINOSURE or other trade insurance?
-Yes, we do have trade insurance.
9) What are the payment terms? What payment options do you accept?
-We're OK with FOB, CIF, CFR.
3) How to choose the right product?
-Please tell us some details about the product you need, such as the iodine adsorption value, shape, size, usage and so on. Then we can recommend the suitable product for you.
4) Could you give me a discount?
-Yes, we can have a negotiation.
5) Where is your factory located? office and factory together?
- Our factory is located in Henan, China. The sales department is in an administration building that near our factory.
6) Which markets/countries do you supply?
-We supply to all countries as long as there's a suitable port at which our products can arrive.
7) Has your factory completed any 3rd party audits?
-Yes, our factory does complete 3rd party audits.
8) Do you have SINOSURE or other trade insurance?
-Yes, we do have trade insurance.
9) What are the payment terms? What payment options do you accept?
-We're OK with FOB, CIF, CFR.
