Cobalt powder – Technische Werkstoffe

02 Product information

Details on
Cobalt powder.

Cobalt in powder form is used mainly as an additive to steels. At the same time, the heat resistance of steel increases, its mechanical properties improve (hardness and wear resistance at elevated temperatures). Cobalt is part of solid alloys, from which a high-speed tool is made. One of the main components of a solid alloy - tungsten or titanium carbide - is sintered in a mixture with metallic cobalt powder. It is cobalt that improves the viscosity of the alloy and reduces its sensitivity to shocks and shocks. For example, the supercobalt steel cutter (18% cobalt) was the most wear-resistant and with better cutting properties compared to vanadium steel cutters (0% cobalt) and cobalt steel (6% cobalt). Also, cobalt alloy can be used to protect against wear of surfaces of parts subject to high loads. Solid alloy can increase the service life of a steel part by 4-8 times.

Formula	CAS number	Party number	Date of production
Co-99.7	7440-48-4	0000022766	February 28, 2011

Element	Specification(%)	Features	Indicators
Co powder
Co	99.7	Particle size	1.46 μm
Fe	0.04	Bulk density	0.84g/cm3
Si	0.012
Ni	0.055
Number of	300 kg
Notes	Application: in the diamond and hard alloy tool industry. Cobalt powder was produced in February 2011. The product was made in Europe.

Cobalt properties

Physical and mechanical properties of cobalt

Properties	cobalt
Atomic number	27
Atomic mass, a.u. n	58,93
Atomic diameter, pm	250
Density, g/cm3	8,9
Specific heat capacity, J/(K·mol)	0,456
Thermal conductivity, W/(m·K)	100
Melting point, °C	1493
Boiling point, °C	2957
Heat of melting, kJ/mol	15,48
Heat of evaporation, kJ/mol	389,1
Molar volume, cm3/mol	6,7
Group of metals	Heavy metal

Chemical properties of cobalt

Properties	cobalt
Covalent radius:	130 pm
Ion radius:	(+6e) 62 (+4e) 70 pm
Electronegative (according to Pauling):	2,16
Electrode potential:	0
Oxidation degrees:	6, 5, 4, 3, 2