Steel A3

Designation

Name	The value
Name	The value
Designation GOST Cyrillic	А3
Designation GOST Latin	A3
Transliteration	A3
By chemical elements	-

Description

A3 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

A steel alloy.

Standards

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

Chemical composition

Standard	C	S	P	Mn	Cr	Fe	Cu	V	Mo
Standard	C	S	P	Mn	Cr	Fe	Cu	V	Mo
GOST 31334-2007	≤0.4	≤0.04	≤0.04	≤1.6	≤0.5	Rest	≤0.3	≤0.1	≤0.4

Fe is the basis.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	KCU, kJ/m²
Steel A3. The axis of the driving and trailer cars for 31331-2007 GOST, ISO 105-3-82. Mode T: Tempering + Vacation
	≥420	650-800	≥19	≥392

Description mechanical marks

Name	Description
Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
KCU	Toughness