00H20N42M4V3B (EP743)

It is an iron-nickel alloy intended for the manufacture of special parts of machine tools and industrial equipment. It is characterized by increased resistance to corrosion (atmospheric and chemical) and is not prone to corrosion cracking. The alloy can be used in the conditions of aerosols and saturated vapors, which include hydrogen sulfide and chlorine compounds. Available in the form of bars, sheets, forgings of complex shape and seamless pipes produced by cold and hot rolling.

Classification

Country	Section	Category
Country	Section	Category
CIS, Russia, Ukraine	Corrosion-resistant alloys and steels	Corrosion-resistant alloys

Chemical composition

Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Nb, %	Mo, %	W, %
Standard	Fe, %	Si, %	Mn, %	Cr, %	Ni, %	P, %	C, %	S, %	Nb, %	Mo, %	W, %
	20.825–31.125	< 0.5	1.2–1.8	20–22	40–45	< 0.02	< 0.04	< 0.015	0.9–1.3	4–5	2.8–3.5

Note: The presence of impurities of other metals and non-metals is not allowed.

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Physical characteristics

Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$
Temperature, °C	$\alpha\cdot 10^{6}$ , $K^{-1}$
20	1.21

Casting and technological parameters

melting point, °C
melting point, °C
1421

Description of chemical elements

Element	Units of measurement	Description
Element	Units of measurement	Description
Fe	%	Iron
Si	%	Silicon
Mn	%	Manganese
Cr	%	Chrome
Ni	%	Nickel
P	%	Phosphorus
C	%	Carbon
S	%	Sulfur
Nb	%	Niobium
Mo	%	Molybdenum
W	%	Tungsten

Description of physical characteristics

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
$\alpha\cdot 10^{6}$	$K^{-1}$	Coefficient of thermal (linear) expansion (range 20°C–T)

Description of the casting and technological parameters

Parameter	Units of measurement	Description
Parameter	Units of measurement	Description
melting point	°C	The temperature at which solid crystalline body makes the transition to the liquid state and Vice versa