R12

For all types of cutting tools in the processing of carbon alloyed structural steels.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Tool steel	High speed tool steel

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Co, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
Standard	Fe, %	Si, %	Mn, %	Co, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
GOST 19265-73	77.64–82.6	< 0.5	< 0.5	< 0.5	3.1–3.6	< 0.4	1.5–1.9	< 0.03	0.8–0.9	< 0.03	< 1	12–13

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	9190

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Alloy	GOST 19265-73	annealing	255

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K
Ac₁, K	Ac₃(Ac_m), K	Ar₁, K
820	850	720

Analogues

CIS, Russia, Ukraine
CIS, Russia, Ukraine
ЭП201

Standards

Standard	Description
Standard	Description
GOST 19265-73

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Co	%	Cobalt
Cr	%	Chrome
Ni	%	Nickel
V	%	Vanadium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum
W	%	Tungsten

Description of physical characteristics

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

Description of temperatures of critical points

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
Ac₁	K
Ac₃(Ac_m)	K
Ar₁	K