Steel A1 (A0)

Designation

Name The value
Designation GOST Cyrillic А1
Designation GOST Latin A1
Transliteration A1
By chemical elements -
Name The value
Designation GOST Cyrillic А0
Designation GOST Latin A0
Transliteration A0
By chemical elements -

Description

A1 steel is used: for the manufacture of laminated and forged billet of square or circular cross-section designed for the production of axles of locomotives, electric trains, diesel and electric trains, wagons, railway and subway Railways.

Note

Non-alloy steel.
If the agreement requires the steel without heat treatment (rolling or forging), then used steel designation A0 instead of A1.

Standards

Name Code Standards
Bandages. Wheels. Axis В41 GOST 30272-96, GOST 31334-2007

Chemical composition

Standard C S P Mn Cr Si Fe Cu V Mo
GOST 31334-2007 ≤0.4 ≤0.04 ≤0.04 ≤1.2 ≤0.3 ≤0.5 Rest ≤0.3 ≤0.05 ≤0.08
Fe is the basis.

Mechanical properties

Section, mm sT|s0,2, MPa σU, MPa d5, % KCU, kJ/m2
Steel A0. The axis of the driving and trailer cars for 31331-2007 GOST, ISO 105-3-82. Without heat treatment
≥280 500-650 ≥20 ≥196
Steel A1. The axis of the driving and trailer cars for 31331-2007 GOST, ISO 105-3-82. Mode N: Normalizing or Normalizing + Vacation
≥300 520-650 ≥22 ≥245
Steel A1. The axis of the driving and trailer cars for 31331-2007 GOST, ISO 105-3-82. Mode T: Tempering + Vacation
≥350 550-700 ≥24 ≥392

Description mechanical marks

Name Description
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU Limit short-term strength
d5 Elongation after rupture
KCU Toughness