08H21N6M2T (EP54, 0Х21Н6М2Т)

Orgsintez, pr-in sulfuric to-you, pulp-boom. pr-in, caprolactam, urea. Typical equipment — distillation columns, extraction, packing, purge tanks, storage, tanks, collections, is used as a 100% substitute for Art. 17H13M2T.

heat exchangers, reactors, piping, valves, continuously operating at temperatures up to 300 deg .; steel austenitic — ferritic class

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ti, % Ni, % P, % C, % S, % Mo, %
GOST 5632-72 66.86–72.5 < 0.8 < 0.8 20–22 0.2–0.4 5.5–6.5 < 0.035 < 0.08 < 0.025 1.8–2.5

Information on suppliers

Physical characteristics

Temperature, °C $$E\cdot 10^{9}$$, $$MPa$$ $$\alpha\cdot 10^{6}$$, $$K^{-1}$$ $$\varkappa$$, $$\frac{W}{m\cdot K}$$ $$\rho$$, $$\frac{kg}{m^3}$$ $$R\cdot 10^{-6}$$, $$\Omega\cdot m$$
20 193 7850 0.7
100 185 9.5 14.6
200 178 13.8 15.9
300 169 16 17.5
400 164 16 19.2
500 162 16.3 20.5
600 153 16.7 21.7
700 139 17.1 21.7
800 136 17.1 24.3
900 17.4 25.5

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % $$KCU\cdot 10^{3}$$, $$\frac{J}{m^2}$$ Treatment
Forgings GOST 25054-81 539 343 18–22 35–40 390–780
Grade GOST 5949-75 60 590 345 25 45 Hardening of 950-1050 ° C, air cooling
The plates GOST 7350-77 590 345 20 590 Hardening of 1025-1075 ° C, cooling water
Sheet GOST 5582-75 590 22 Hardening of 1000-1080 ° C, air cooling

Brinell hardness number

Rolling Standard Classifiers Value, HBW
Forgings GOST 25054-81 140–200

Technological Properties

Weldability
no limits

Analogues

Germany USA
X2CrNiMoN225 329

Standards

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
$$E\cdot 10^{9}$$ $$MPa$$ Elastic modulus
$$\alpha\cdot 10^{6}$$ $$K^{-1}$$ Coefficient of thermal (linear) expansion (range 20°C–T)
$$\varkappa$$ $$\frac{W}{m\cdot K}$$ Coefficient of thermal conductivity (the heat capacity of the material)
$$\rho$$ $$\frac{kg}{m^3}$$ The density of the material
$$R\cdot 10^{-6}$$ $$\Omega\cdot m$$ Electrical resistivity

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
$$KCU\cdot 10^{3}$$ $$\frac{J}{m^2}$$ Impact toughness

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