|Designation GOST Cyrillic||13Г2АФ|
|Designation GOST Latin||13G2AF|
|By chemical elements||13Mn2NV|
13Г2АФ steel is used: for the production of sheet metal used in the manufacture of welded longitudinal strength class K52, K54, is intended for the construction of gas pipelines, oil pipelines and products pipelines with working pressure of 55 psig and oil pipelines up to 64 ATI.
Steel low alloy manganese vanadium with nitrogen. The degree of deoxidation — SP.
Steel 13Г2АФ provides strength class K54 sheet metal without the use of additional hardening treatment.
|Sheets and strips||В33||TU 14-1-5241-93, TU 14-1-1950-77, TU 14-1-2723-79|
|Steel pipes and fittings to them||В62||TU 14-3-1138-82, TU 14-3-1573-96|
According to TU 14-3-1138-82, TU 14-1-1950-77, the chemical composition of steel and the equivalent of carbon are accepted according to the certificate of the supplier of sheet products. The table shows the permissible residual content of nickel, chromium, copper and aluminum. It is allowed to process steel with additives of rare earth elements and calcium. When processing steel with synthetic slag, the sulfur content should not be more than 0.015%. In individual meltings, the carbon content in the range of 0.11-0.18% and aluminum in the range 0.01-0.05% is allowed.
According to TU 14-3-1573-96 carbon equivalent of Se ≤ 0.45%.
|Section, mm||sT|s0,2, MPa||σU, MPa||d5, %||KCU, kJ/m2|
|sheet metal as supplied at TU 14-1-5241-93. Quenching + Tempering (samples transverse)|
|Longitudinal electric-welded pipes of strength class K52 for THAT 14-3-1138-82 in the delivery condition (in cross-section is specified outside diameter of pipe, KCU-60 °C)|
|Longitudinal electric-welded pipes of oil and gas as delivered at TU 14-3-1573-96 (samples transverse; column cross section - outer diameter; in the graph the value is KCU KCU-60 °C)|
|530, 630, 720, 820, 1020||≥360||≥530||≥20||≥294|
Description mechanical marks
|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|