Steel 2

Designation

Name The value
Designation GOST Cyrillic 2
Designation GOST Latin 2
Transliteration 2
By chemical elements 2

Description

2 steel is used: for the manufacture of tires freight, passenger and shunting locomotives, motor carriages and diesel trains, subway cars and tenders Railways of 1520 mm; tires for wheeled steam tram cars.

Note

Steel bandage.
The steel must be subjected to secondary treatment by blowing nitrogen, argon or vacuum.

Standards

Name Code Standards
Bandages. Wheels. Axis В41 GOST 398-96, GOST 3225-80, GOST 5000-83, GOST 5257-98, GOST Р 52366-2005, GOST 398-2010, TU 0943-050-01124328-96

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Mo
GOST 398-96 0.57-0.65 ≤0.04 ≤0.035 0.6-0.9 - 0.22-0.45 - Rest - ≤0.15 -
GOST 5257-98 0.57-0.67 ≤0.04 ≤0.035 0.5-0.9 - 0.2-0.45 - Rest - - -
GOST 398-2010 0.57-0.67 ≤0.02 ≤0.03 0.6-0.9 ≤0.2 0.22-0.45 ≤0.25 Rest ≤0.3 ≤0.15 ≤0.08
Fe is the basis.
According to GOST 398-96, the content of molybdenum is not more than 0.08%, nickel is not more than 0.25%, chromium is not more than 0.20%, copper is not more than 0.30%. The total content of sulfur and phosphorus should not be more than 0.065%. In the finished tires, the maximum deviations in chemical composition are allowed in accordance with the requirements of GOST 380.
According to GOST 5257-98, the content of nickel is not more than 0.30%, chromium is not more than 0.25%, copper is not more than 0.30%.
According to GOST 398-2010 the total share of sulfur and phosphorus in steel should not exceed 0.040%. In the bandages, the maximum deviations in the chemical composition are permissible: carbon + 0.030 / -0.020, manganese + 0.050 / -0.030, silicon + 0.030 / -0.020, chromium +0.020, vanadium + 0.010%, phosphorus +0.0050% , in the sulfur +0.0050%. The mass fraction of hydrogen in liquid steel should not exceed 0.00020%.

Mechanical properties

Section, mm σU, MPa d5, % y, % KCU, kJ/m2 HB, MPa
Bandages on 398-96 GOST, GOST 398-2010. Quenching with a separate heating + Vacation
930-1110 ≥10 ≥14 ≥2450 269-321
Bandages according to GOST 5257-98. Quenching with a separate heating + Vacation
≥900 ≥10 ≥14 - ≥250

Description mechanical marks

Name Description
σU Limit short-term strength
d5 Elongation after rupture
y The relative narrowing
KCU Toughness
HB Brinell hardness number