BK11-B (VK11B)

To equip mining tools: Shock-rotary, rotary-percussion, rotary-percussive drill holes and wells in a very strong and abrasive rocks with factor of a fortress on a scale Protodjakonova up to f = 18.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Refractory metals, carbide	Hard sintered alloys

Chemical composition

Standard	WC, %	Co, %
Standard	WC, %	Co, %
GOST 3882-74	> 89	< 11

Information on suppliers

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	14.1–14.4

Analogues

Germany
Germany
HG40

Standards

Standard	Description
Standard	Description
GOST 3882-74

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
WC	%	Wolfram carbide
Co	%	Cobalt

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\rho$	$\frac{kg}{m^3}$	The density of the material