15H18SYU (EI484, H18SYU)

tube pyrolysis plants, equipment, heat-resistant steel

Classification

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

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Al, % P, % C, % S, %
GOST 5632-72 76.29–81.3 1–1.5 < 0.8 17–20 0.7–1.2 < 0.035 < 0.15 < 0.025

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{P}$$, $$MPa$$ $$\epsilon_L$$, % $$\psi$$, % Treatment
Rod GOST 5949-75 490 295 20 50 Annealing

Analogues

Germany USA
1.4742 430

Standards

Standard Description
GOST 5632-72

Description of chemical elements

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

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