HN32T (EP670, Х20Н32Т)

Details and pipes of gas outlets of high-temperature petrochemical plants and equipment for ammonia production with a long service life at t up to 850 degrees. 8160kg / m3.

flue pipe, sheet metal, high-temperature plants in the petrochemical engineering for continuous service at temperatures of 700−850 degrees.

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ti, % Ni, % Al, % P, % C, % S, %
GOST 5632-72 41.4–50.75 < 0.7 < 0.7 19–22 0.25–0.6 30–34 < 0.5 < 0.03 < 0.05 < 0.02

Information on suppliers

Physical characteristics

Temperature, °C E⋅109, MPa α⋅106, K−1 ϰ, Wm⋅K ρ, kgm3
20 205 15.9 8160
100 13.7 13.4
200 15.6 15.1
300 17.2 16.7
400 18 18
500 18 19.2
600 18.4 20.5
700 18.9 21.7
800 19 23.4

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers σU, MPa σP, MPa ϵL, % ψ, % Treatment
Sheet 470–490 175–195 25–30 hardening
Rod 480 180 40 60 Heating of 1100-1150 ° C, air cooling
Forgings GOST 25054-81 470 176 30–36 35–40

Analogues

Germany USA
X2NiCrAiTi32-20 UNSNo8800

Standards

Description of chemical elements

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

Description of physical characteristics

Parameter Units of measurement Description
E⋅109 MPa Elastic modulus
α⋅106 K−1 Coefficient of thermal (linear) expansion (range 20°C–T)
ϰ Wm⋅K Coefficient of thermal conductivity (the heat capacity of the material)
ρ kgm3 The density of the material

Description of mechanical properties

Parameter Units of measurement Description
σU MPa Ultimate tensile strength
σP MPa Proportionality limit
ϵL % Elongation at break (longitudinal)
ψ % Reduction in cross section on fracture