Steel N50

Designation

Name The value
Designation GOST Cyrillic Н50
Designation GOST Latin H50
Transliteration N50
By chemical elements Н50

Description

Steel N50 is used: for the manufacture of rails type R18 and R24 designed for installation on the Railways narrow gauge.

Note

Steel for the manufacture of rails is made with a degree of deoxidation SP (quiet) or SS (semi-killed).

Standards

Name Code Standards
Rails. Lining. Lining. Crutches В42 GOST 5876-82, GOST 6368-82

Chemical composition

Standard C S P Mn Si Fe As
GOST 5876-82 0.4-0.55 ≤0.045 ≤0.04 0.5-1.4 ≥0.13 Rest ≤0.15
Fe is the basis.
According to GOST 5876-82 in the steel smelted on the basis of Kerch ores, a mass fraction of sulfur and phosphorus is allowed up to 0.050%.

Mechanical properties

Section, mm σU, MPa HB, MPa
Mechanical properties of steel N50sp or N50ps for rails type R18 and R24 according to GOST 5876-82 on delivery
≥570 ≥170

Description mechanical marks

Name Description
σU Limit short-term strength
HB Brinell hardness number