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.


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, %
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.

Information on suppliers

Physical characteristics

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

Casting and technological parameters

melting point, °C

Description of chemical elements

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

Description of the casting and technological parameters

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