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Steel 08ГНФЛ

Designation

Name The value
Designation GOST Cyrillic 08ГНФЛ
Designation GOST Latin 08GHFL
Transliteration 08GNFL
The chemical elements 08MnНV

Description

08ГНФЛ steel is 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.

Note

Economically alloyed low-carbon structural steel.

Standards

Name Code Standards
Castings, steel В82 TU 24.11.01.092-84

Chemical composition

Standard C S P Mn Cr Si Ni Fe V
TU 24.11.01.092-84 ≤0.12 ≤0.03 ≤0.03 0.8-1.4 ≤0.3 0.2-0.4 0.8-1.2 The rest 0.06-0.12
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 residual content of molybdenum in the amount of 0,01-0,12% is allowed. The permissible deviations in the chemical composition are in accordance with GOST 977.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % Brinell hardness number, 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
≥350 ≥430 ≥15 ≥50 ≥140
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
≥300 ≥400 ≥21 ≥45 ≥120

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing

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