VZHL18 (VLL18-VI)

Production of cast bar stock for further refining during casting of blades and other shaped castings

Classification

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

Chemical composition

Standard	Fe, %	Si, %	B, %	Bi, %	Mn, %	Co, %	Cr, %	Ti, %	Ni, %	Zr, %	Al, %	Pb, %	Ce, %	P, %	C, %	S, %	Nb, %	Mo, %	W, %
Standard	Fe, %	Si, %	B, %	Bi, %	Mn, %	Co, %	Cr, %	Ti, %	Ni, %	Zr, %	Al, %	Pb, %	Ce, %	P, %	C, %	S, %	Nb, %	Mo, %	W, %
OST 1-90126 - 85	< 1	< 0.4	< 0.06	< 0.0005	< 0.4	4–6	17–18	2.2–3	55.1185–65.1	< 0.02	3.4–4	< 0.001	< 0.02	< 0.015	0.1–0.15	< 0.015	1.2–1.8	4.5–6	2.5–4

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Mechanical properties at 20 °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
Workpiece	OST 1-90126 - 85				880	2	2

Long-term strength

Standard	Treatment	Температура испытаний, ° С	Постоянно приложенное напряжение, МПа	Время до разрушения в часах, ч
Standard	Treatment	Температура испытаний, ° С	Постоянно приложенное напряжение, МПа	Время до разрушения в часах, ч
OST 1-90126 - 85	Heating to 1180 ± 10 ° С, holding 3.5 hours, air cooling. Aging at 950 ± 10 ° С, exposure 3.5–4 hours, air cooling	900	240	40

Standards

Standard	Description
Standard	Description
OST 1-90126 - 85

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Bi	%	Bismuth
Mn	%	Manganese
Co	%	Cobalt
Cr	%	Chrome
Ti	%	Titan
Ni	%	Nickel
Zr	%	Zirconium
Al	%	Aluminium
Pb	%	Lead
Ce	%	Cerium
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Nb	%	Niobium
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