Steel 20GNMFL used: for the manufacture of castings parts produced by the enterprises of heavy and transport engineering and is intended for operation in conditions of low temperatures and high loading rates; welded structures of large cross-sections of tires in cement kilns.

Note

Economically alloyed low-carbon structural steel.

Standards

Name	Code	Standards
Steel castings	В82	GOST 977-88, TU 24.11.01.092-84

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	V	Mo
GOST 977-88	0.14-0.22	≤0.03	≤0.03	0.7-1.2	≤0.3	0.2-0.4	0.7-1	Rest	0.06-0.12	0.15-0.25
TU 24.11.01.092-84	0.14-0.25	≤0.03	≤0.03	0.8-1.4	≤0.3	0.2-0.4	0.8-1.2	Rest	0.06-0.12	0.15-0.25

Fe is the basis.
According to TU 24.11.01.092-84 it is allowed to deoxidize and modify steel with niobium, titanium, calcium, barium, magnesium, rare earth metals or other additives to obtain mechanical properties exceeding the minimum level of their values. It is allowed to alloy boron steel in an amount of 0.002-0.005% by calculation to obtain mechanical properties that exceed the minimum level of their values. The permissible deviations in the chemical composition are in accordance with GOST 977.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	HB, MPa
The castings as delivered on the other 24.11.01.092-84. Quenching from 910-930 °C or Quenching from 910-930 °C + Vacation at 600-650 °C, air cooling
	≥600	≥700	≥14	≥30	≥217
The castings as delivered on the other 24.11.01.092-84. Normalization at 910-930 °C or Normalizing at 910-930 °C + Vacation at 600-650 °C, air cooling
	≥550	≥700	≥15	≥33	≥202

Description mechanical marks

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
y	The relative narrowing
HB	Brinell hardness number

Steel 20GNMFL

Designation

Description

Note

Standards

Chemical composition

Mechanical properties

Description mechanical marks

Subscribe to price lists and special offers