50H25N35V5K15S

Used for the manufacture of pipes tsentrobezhnolityh for the manufacture of the coils of the tubular furnace installations production of ammonia, hydrogen, ethylene, carbon disulphide, etc., operating in the temperature range 760 — 1060 °C and a pressure of 3.92 MPa (40 kgf/cm2).

Classification

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

Chemical composition

Standard Fe, % Si, % Sn, % Mn, % Co, % Cr, % Ti, % Cu, % Zn, % Ni, % V, % Pb, % As, % P, % C, % S, % Mo, % W, %
TU 1333-047-00220302-02 74.57–20.849 1.2–1.6 < 0.01 < 0.7 14–16 25–28 0.0005–0.1 < 0.2 < 0.01 34–37 0.0005–0.2 < 0.01 < 0.01 < 0.02 0.45–0.55 < 0.02 < 0.5 4.5–5.5

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers \sigma _{U}, MPa \sigma_{0.2}, MPa \psi, % δ, % Treatment
TU 1333-047-00220302-02 > 490 > 245 > 5 > 4 Centrifugal tubes with an outer diameter of 85-320 mm. Quenching in water or air from 1100-1150 ° C

Analogues

Germany
GX 50 NiCrCoWSi 35-25-15-5

Standards

Standard Description
TU 1333-047-00220302-02

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Sn % Tin
Mn % Manganese
Co % Cobalt
Cr % Chrome
Ti % Titan
Cu % Copper
Zn % Zinc
Ni % Nickel
V % Vanadium
Pb % Lead
As % Arsenic
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum
W % Tungsten

Description of mechanical properties

Parameter Units of measurement Description
δ % Elongation after rupture
\sigma_{0.2} MPa Tensile stress required to produce a total elongation of 0.2%
\sigma _{U} MPa Ultimate tensile strength
\psi % Reduction in cross section on fracture