σU
MPa
ψ

HN58VMKYUR-VD (EP238-VD, HN58VMKYUR)

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, %	Cu, %	Ni, %	Al, %	Ce, %	P, %	C, %	S, %	Mo, %	W, %
Standard	Fe, %	Si, %	B, %	Mn, %	Co, %	Cr, %	Cu, %	Ni, %	Al, %	Ce, %	P, %	C, %	S, %	Mo, %	W, %
GOST 23705 - 79	< 1	< 0.4	< 0.02	< 0.3	13.5–16	7.5–9	< 0.07	52.885–63.9	6.1–6.7	< 0.02	< 0.015	< 0.08	< 0.01	3–5.5	6–8

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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	8	4	Quenching and aging

Brinell hardness number

Rolling	Standard	Classifiers	Value, HBW
Rolling	Standard	Classifiers	Value, HBW
Rod	GOST 23705 - 79	Hardening, aging	302–352

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
Cu	%	Copper
Ni	%	Nickel
Al	%	Aluminium
Ce	%	Cerium
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