HN51VMTYUKFR-VD (EP220-VD, HN51 VMTYUKFR)

For the manufacture of various parts-duty power-plant engineering, engine, turbine; turbine blades; details of special equipment.

Classification

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

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Co, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Al, %	P, %	C, %	S, %	Mo, %	W, %
Standard	Fe, %	Si, %	B, %	Mn, %	Co, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Al, %	P, %	C, %	S, %	Mo, %	W, %
GOST 23705 - 79	< 3	< 0.5	< 0.02	< 0.5	14–16	9–12	2.2–2.9	< 0.07	44.306–60.7	0.2–0.8	3.9–4.8	< 0.015	< 0.08	< 0.009	5–8	5–7

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Mechanical properties at 950 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\psi$ , %	d5, %	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	$\psi$ , %	d5, %	Treatment
Rod	GOST 23705 - 79				490	9	6	Quenching and aging

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Rod	GOST 23705 - 79	Hardening, aging	285–341

Standards

Standard	Description
Standard	Description
GOST 23705 - 79
TU 14-1-223-72

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Mn	%	Manganese
Co	%	Cobalt
Cr	%	Chrome
Ti	%	Titan
Cu	%	Copper
Ni	%	Nickel
V	%	Vanadium
Al	%	Aluminium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Mo	%	Molybdenum
W	%	Tungsten

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
d5	%	Elongation at break
$\sigma _{U}$	$MPa$	Ultimate tensile strength
$\psi$	%	Reduction in cross section on fracture