Steel 20ГНФЛ
Designation
Description
20ГНФЛ 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
Chemical composition
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.
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.