Cobalt powder. Grades, chemical composition.
General Characteristics
Cobalt is the 27th element in the Mendeleev’s chemical table, where it has the symbol Co, a metal with a bluish-black cast. The specific gravity of cobalt is 8.9 g/cm³. Finely dispersed cobalt powder is produced by reduction or electrolytic method. Widely used by powder metallurgy. It serves as alloying agent for heat-resistant alloys, hard magnetic materials, high-speed steels.
| Atomic (molar) mass g/mol | Oxidation state | Density [g/cm3] | Melting point t°C | Boiling point t°C | Melting point kJ/mol |
|---|---|---|---|---|---|
| 59 | -1 0, 2, 3 | 8,9 | 1493°С | 2957°С | 15,48 |
The most popular variety of cobalt powder is PC-1u grade with 96% of particles ≤71microns… Bulk density not less than 1,8 g/cm³. Production of PC-1u by electrolytic method is regulated by GOST 9721−79. The content of cobalt in this powder is not less than 99,35%,
Characteristics of cobalt powder PK-1U
| Mean distribution diameter dcp/dm, microns * | ≤45 | 45÷71 | ≥71 | Bulk density, g/cm³ *** |
|---|---|---|---|---|
| (32,0±5,0)/(30,0±5,0) | not less than 30 | not more than 66 | not more than 4 | not less than 1.8 |
* sedimentation method.
** sieve analysis method.
*** BET method.
Chemical composition of cobalt powder PK-1U
| % wt. | Fe | Ni | O | Cu | Si | S | Moisture |
|---|---|---|---|---|---|---|---|
| 99,35 | 0,45 | 0,45 | 0,3 | 0,04 | 0,02 | 0,008 | 0,15 |
Application PK-1u
Paint materials, production of permanent magnets, high-speed tool steels, heat-resistant alloys by methods of powder metallurgy. Cobalt magnets, resistant to heat, vibration, are not demagnetized in the most difficult conditions up to the temperature of 1121 °C. PK-1u serves as a basis for corrosion-resistant, wear-resistant, heat-resistant alloys with special properties. Powder cobalt coating increases strength and performance of the parts.
Buy at a bargain price
Evek GmbH stocks a wide range of high quality metal powders at optimal prices. Cobalt powder is supplied in metal sealed tins, which are filled as much as possible with powder to reduce the volume of air inside. The cans of powder are then packed in wooden crates. All products have a quality certificate of compliance with the requirements of standards and specifications. The manufacturer, powder brand, chemical composition and properties are noted in the certificate. Orders are realized in the shortest possible time. Preferential discounts are offered to wholesale buyers.