4H5V2FS (EI958, 40H5V2FS)

Another designation EI958. Temperature of critical points: Ac1 = 800, Ac3 (Acm) = 875, Ar3 (Arcm) = 840, Ar1 = 730, Mn = 275. Hardness after annealing (GOST 5950−2000): HB 10 ^-1 = 241 MPa .

mold die casting of zinc, aluminum and magnesium alloys, Molotov and pressing the insert (section 200−250 mm) at the hot deformation of structural steels, tool for landing pieces of alloy structural and heat-resistant materials on horizontal forging machines.

Classification

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

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	P, %	C, %	S, %	W, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Cu, %	Ni, %	V, %	P, %	C, %	S, %	W, %
GOST 5950-2000	88.54–92	0.8–1.2	0.15–0.45	4.5–5.5	< 0.3	< 0.4	0.6–0.9	< 0.03	0.35–0.45	< 0.03	1.6–2.2

Information on suppliers

Wish to advertise here?

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Metal rolling		10			1760	1690	300	Hardening of 1030-1050 ° C, the oil, leave 560-580 ° C, 530-540 ° C and Holidays

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Alloy	GOST 5950-73	annealing	241

Critical point temperatures

Ac₁, K	Ac₃(Ac_m), K	Ar₃(Arc_m), K	Ar₁, K	Mn, K
Ac₁, K	Ac₃(Ac_m), K	Ar₃(Arc_m), K	Ar₁, K	Mn, K
800	875	840	730	275

Analogues

Germany
Germany
GS-55 NiCrMoV 6

Standards

Standard	Description
Standard	Description
GOST 5950-2000	GOST

Description of chemical elements

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

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\sigma_{P}$	$MPa$	Proportionality limit
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness

Description of temperatures of critical points

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
Ac₁	K
Ac₃(Ac_m)	K
Ar₃(Arc_m)	K
Ar₁	K
Mn	K