GOST 9721-79. Cobalt powder. Specifications.
The company Electrocentury-steel implements cobalt powder at factory prices. Supplier will deliver products to any place specified by the customer.
Chemical composition and quality of the fractions of powder of cobalt
The standard applies to cobalt powder, manufactured by electric method and intended for the production of products by powder metallurgy and magnets.
Cobalt powder must be made in accordance with the requirements of this standard for technological regulations approved in the prescribed manner. Depending on the chemical composition of cobalt powder manufactured brands of PC-1U.
. The chemical composition of the powder should match what is specified in the table.
|Brand powder||Chemical composition, %||OKP code|
|Cobalt, not less||Impurity, not more than|
|PK-1U||The 99.35||0,2||0,02||0,4||0,02||0,04||17 9351 0001|
Mass fraction of moisture and oxygen in the powder must not exceed: moisture — 0,15%; oxygen, 0.3 percent.
The particle size of the powder should be less than 71 microns. Presence of powder particles larger than 71 µm in an amount of not more than 4% by weight of the party.
Mass fraction of powder particles with a size less than 45 microns must be at least 30% by weight of the party.
The bulk density of the powder is determined by user demand.
Buy cobalt powder at competitive prices the company offers Electrocentury-steel. The supplier ensures the delivery of products to any place specified by the consumer.
Safety requirements and quality control
Cobalt powder refers to 2 hazard class. The maximum permissible concentration of cobalt powder in the air is 0.5 mg/m3, and. the maximum permissible concentration of cobalt ions in water is 1.0 mg/DM3.
The cobalt content in the water is determined by the photometric method or other methods, such as photometric accuracy.
In aerial environment and waste waters in the presence of other substances or factors of the cobalt powder of toxic substances does not form. Cobalt powder under normal conditions is not flammable (ignition temperature 370 °C), fire — and explosion.
Cobalt powder is Packed in metal cans according to GOST 6128 or in plastic bottles with a capacity of not more than 10 DM3.
The company Electrocentury-steel offers to buy cobalt powder, manufactured according to GOST 9721−79. The supplier delivers products to the address specified by the consumer.