68NHVKTYU (EP578)

for the elastic sensing elements, operating at temperatures from -196 to 500 degrees C

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Precision alloys	With preset elastic properties

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Co, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Al, %	Ce, %	P, %	C, %	S, %	Nb, %	W, %
Standard	Fe, %	Si, %	B, %	Mn, %	Co, %	Cr, %	Ti, %	Cu, %	Ni, %	V, %	Al, %	Ce, %	P, %	C, %	S, %	Nb, %	W, %
GOST 10994-74	< 1	< 0.4	< 0.003	< 0.4	5.5–6.7	18–20	2.7–3.2	< 0.07	55.402–63.5	< 0.2	1.3–1.8	< 0.05	< 0.015	< 0.05	< 0.01	< 0.2	9–10.5

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Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	Treatment
Rolling	Standard	Size, mm	Tension	Classifiers	$\sigma _{U}$ , $MPa$	Treatment
	GOST 10994-74				1375–1570

Standards

Standard	Description
Standard	Description
GOST 10994-74
TU 14-1-4470-88

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
Ce	%	Cerium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Nb	%	Niobium
W	%	Tungsten

Description of mechanical properties

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\sigma _{U}$	$MPa$	Ultimate tensile strength