EP616A Nickel Alloy (НХ26С2Р2)

No foreign analogues

Designed for the manufacture of precision instruments, thermocouples and compensation wires

Classification

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

Chemical composition

Standard	Fe, %	Si, %	B, %	Mn, %	Cu, %	Ni, %	Al, %
GOST 492-2006	< 3	1.8–2.3	1.2–1.8	< 0.4	< 0.25	92.21–97	< 0.04

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Physical characteristics

Temperature, °C	$$\varkappa$$, $$\frac{W}{m\cdot K}$$	$$\rho$$, $$\frac{kg}{m^3}$$	Cp, Дж/кг·К
20	55.5–62.5	8000	456

Mechanical properties at 20 °C

Rolling	Standard	Size, mm	Tension	Classifiers	$$\sigma _{U}$$, $$MPa$$	$$\sigma_{0.2}$$, $$MPa$$	d5, %	Treatment
Tape	GOST 5632-14	1	Transverse	raw, cold rolling, thin, Transverse	680–720	390–420	5–9

Твёрдость по Роквеллу

Rolling	Standard	Classifiers	Value, HRC
Tape	GOST 5632-14	raw, cold rolling, thin, Transverse	37–40

Technological Properties

Weldability	Flake Susceptibility	Propensity to temper brittleness
no limits	not sensitive	loathsome

Limit operating modes

Standard	Температура, °C
GOST 5362-78	500–600

Long-term strength

Standard	Treatment	Постоянно приложенное напряжение, МПа
GOST 5632-14		> 190

Standards

Standard	Description
GOST 492-2006

Description of chemical elements

Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
B	%	Bor
Mn	%	Manganese
Cu	%	Copper
Ni	%	Nickel
Al	%	Aluminium

Description of physical characteristics

Parameter	Units of measurement	Description
Cp	Дж/кг·К	Specific heat of material
$$\varkappa$$	$$\frac{W}{m\cdot K}$$	Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$	$$\frac{kg}{m^3}$$	The density of the material

Description of mechanical properties

Parameter	Units of measurement	Description
d5	%	Elongation at break
$$\sigma_{0.2}$$	$$MPa$$	Tensile stress required to produce a total elongation of 0.2%
$$\sigma _{U}$$	$$MPa$$	Ultimate tensile strength

Designation of types of weldability

Parameter	Units of measurement	Description
no limits		Welding is performed without heating and without subsequent heat treatment
Boundedly welded		Welding is possible with heating up to 100–120 °C and subsequent heat treatment
Difficult to weld		For obtaining quality welded joints, additional operations are required: heating up to 200–300 °C for welding, heat treatment after welding — annealing
Not applicable for welded structures