A4

for the production of rolled and forged blanks of square or circular cross-section designed for the production of axles of locomotives, electric trains, diesel and electric trains, cars and railway carriages underground railways.

Classification

Country Section Category
CIS, Russia, Ukraine Steels for special purposes Steel for rail transport

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Cu, % V, % P, % C, % S, % Mo, %
GOST 31334 - 2007 > 96.27 < 0.5 < 0.8 < 1.2 < 0.3 < 0.1 < 0.04 < 0.4 < 0.04 < 0.35

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{Y}$$, $$MPa$$ d5, % Treatment
Axis GOST 31334 - 2007 650–800 420 19 Normalization

Standards

Standard Description
GOST 31334 - 2007

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Cu % Copper
V % Vanadium
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of mechanical properties

Parameter Units of measurement Description
d5 % Elongation at break
$$\sigma_{Y}$$ $$MPa$$ Yield strength
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength