R6M5K5

Steel has an increased tendency to decarburization, good viscosity, increased wear resistance, good grindability.

For roughing and semi-finishing tools when machining improved alloyed and stainless steels under conditions of increased heating of the cutting edge.

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

Standard	Fe, %	Si, %	Mn, %	Co, %	Cr, %	Cu, %	Ni, %	V, %	P, %	C, %	S, %	Mo, %	W, %
GOST 19265-73	73.55–77.13	0.2–0.5	0.2–0.5	4.7–5.2	3.8–4.3	< 0.25	< 0.6	1.7–2.1	< 0.03	0.86–0.94	< 0.03	4.8–5.3	5.7–6.7

Rolling	Standard	Size, mm	Tension	Classifiers	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{P}$$, $$MPa$$	$$\psi$$, %	$$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$	d5, %	Treatment
Alloy	GOST 19265-73				850	510	14	180	12	delivery condition

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

Ac₁, K	Ac₃(Ac_m), K	Ar₃(Arc_m), K	Ar₁, K
840	875	805	765

Germany	USA	European Union
1.3243	T11341	HS6-5-2-5

Standard	Description
GOST 19265-73

Parameter	Units of measurement	Description
$$E\cdot 10^{9}$$	$$MPa$$	Elastic modulus
$$\varkappa$$	$$\frac{W}{m\cdot K}$$	Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$	$$\frac{kg}{m^3}$$	The density of the material
$$R\cdot 10^{-6}$$	$$\Omega\cdot m$$	Electrical resistivity

Parameter	Units of measurement	Description
d5	%	Elongation at break
$$\sigma _{U}$$	$$MPa$$	Ultimate tensile strength
$$\sigma_{P}$$	$$MPa$$	Proportionality limit
$$\psi$$	%	Reduction in cross section on fracture
$$KCU\cdot 10^{3}$$	$$\frac{J}{m^2}$$	Impact toughness