R9K10 (EI920)

For the manufacture of semi-finishing and roughing tools in the processing of carbon and alloyed structural steels at elevated cutting conditions.

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

Standard	Fe, %	Si, %	Mn, %	Co, %	Cr, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
GOST 19265-73	68.64–72.94	< 0.5	< 0.4	9–10.5	3.8–4.4	< 0.4	2–2.6	< 0.03	0.9–1	< 0.03	< 1	9–10.5

Temperature, °C	$$\rho$$, $$\frac{kg}{m^3}$$
20	8300

Rolling	Standard	Classifiers	Value, HBW
Hire	GOST 19265-73	annealing	269

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K
840	870	785

Standard	Description
GOST 19265-73

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