R18F2 (EI916)

For the manufacture of finishing and semi-finishing cutting tools in the processing of moderately 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, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
GOST 19265-73	70.99–74.29	< 0.4	< 0.4	3.8–4.4	< 0.4	1.8–2.4	< 0.03	0.85–0.95	< 0.03	< 1	17–19

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Physical characteristics

Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
Temperature, °C	$\rho$ , $\frac{kg}{m^3}$
20	9820

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Hire		annealing	269

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K
Ac₁, K	Ac₃(Ac_m), K	Ar₁, K
800	850	725

Analogues

USA	CIS, Russia, Ukraine
USA	CIS, Russia, Ukraine
E.No.19	ЭИ916

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
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