04H18N10 (EP550, 00X18H10)

parts operating in nitric acid environments at elevated temperatures; austenitic steel

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, %
GOST 5632-72 67.105–74 < 0.8 < 2 17–19 9–11 < 0.035 < 0.04 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C $$\rho$$, $$\frac{kg}{m^3}$$
20 7900

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % Treatment
Pipes are coldly deformed. GOST 9941-81 490 45
Pipes are hot deformed. GOST 9940-81 441 40
Rod GOST 5949-75 440 155 40 55 Hardening of 1020-1100 ° C, air
Forgings GOST 25054-81 441 157 38–40 45–50
The plates GOST 7350-77 490 175 45 Hardening of 1050-1100 ° C, cooling water

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Forgings GOST 25054-81 1790

Analogues

USA
304L

Standards

Standard Description
GOST 5632-72

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

Description of physical characteristics

Parameter Units of measurement Description
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\sigma_{P}$$ $$MPa$$ Proportionality limit
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\psi$$ % Reduction in cross section on fracture