13H14N3V2FR (EI736, H14NVFR)

High-loaded parts operating at high humidity.

highly loaded parts, long operating at temperatures up to 550 ° C. in conditions of high humidity; scaling temperature of 700 ° C.; martensitic steel grade

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Heat resistant steels and alloys	Heat resistant high alloy steel

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Ni, %	V, %	P, %	C, %	S, %	W, %
Standard	Fe, %	Si, %	B, %	Mn, %	Cr, %	Ti, %	Ni, %	V, %	P, %	C, %	S, %	W, %
GOST 5632-72	77.651–82.32	< 0.6	< 0.004	< 0.6	13–15	< 0.05	2.8–3.4	0.18–0.28	< 0.03	0.1–0.16	< 0.025	1.6–2.2

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\sigma_{P}$ , $MPa$	$\epsilon_L$ , %	$\psi$ , %	$KCU\cdot 10^{3}$ , $\frac{J}{m^2}$	Treatment
Rod	GOST 5949-75	< 60			930	735	14	55	880	Hardening of 1040-1060 ° C, the oil, leave 640-680 ° C, air
Rod	GOST 5949-75				1130	885	12	50	690	Hardening of 1040-1060 ° C, air Accommodation 540-580 ° C, air

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Rod	GOST 5949-75	annealing	302

Standards

Standard	Description
Standard	Description
GOST 5632-72
TU 14-1-3297-82

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Mn	%	Manganese
Cr	%	Chrome
Ti	%	Titan
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
$\epsilon_L$	%	Elongation at break (longitudinal)
$\psi$	%	Reduction in cross section on fracture
$KCU\cdot 10^{3}$	$\frac{J}{m^2}$	Impact toughness