H6F4M (EP770)

For tools operating at elevated temperatures (cutting tool).

for the manufacture of dies

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Tool steel	Die tool steel

Standard	Fe, %	Si, %	Mn, %	Cr, %	V, %	P, %	C, %	S, %	Mo, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	V, %	P, %	C, %	S, %	Mo, %
TU 14-131-491-80	86.015–88.3	0.15–0.4	0.15–0.4	5.7–6.5	3.5–4	< 0.02	1.7–1.85	< 0.015	0.5–0.8

Ac₁, K	Ac₃(Ac_m), K	Ar₁, K	Mn, K
Ac₁, K	Ac₃(Ac_m), K	Ar₁, K	Mn, K
820	860	750	260

Standard	Description
Standard	Description
TU 14-131-491-80