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Steel 12Г2С

03CrNiSteel 05G1B steel 06G2AF steel 06G2MFB steel 06G2FR steel 06CGSY steel Steel 07GBU Steel 07GFB (07GFB-U) 08G1NFB steel Steel 08G2MF (08G2MFA) 08G2S steel 08G2SFB steel Steel 08G2T (08G2T-U) 08G2FBT steel 08GBU steel Steel 08GBUTR Steel 09G2 Steel 09G2D Steel 09G2S (09G2SA) Steel 09G2SD Steel 09G2FB (09G2BT) 09GBU steel 09GNFB steel Steel 09GSNBTs 09CrNi2Ab steel 10G2B steel Steel 10G2BD 10G2BTU steel Steel 10G2S1 Steel 10G2S1D 10G2SB steel 10G2SFB steel 10G2T steel 10G2FB steel 10Г2ФБЮ steel 10GNB steel Steel 10GS2 10GT steel Steel 10ХГСН1Д (СХЛ-45) 10XDP steel Steel 10ХН1М (ВК-1А) 10KhNDM steel 10XNDP steel Steel 10ХСНД (СХЛ-4) Steel 12G (12GA) Steel 12G2AF Steel 12G2B Steel 12G2S Steel 12G2SB Steel 12G2SMF Steel 12G2SMFAU 12GN2MFAu steel 12NDU steel Steel 12GS (Sv-12GS) 12GSB steel 12GF steel 12ХГДАФ steel 12HSND steel Steel 13G1S (13G1S-U) Steel 13G1SB (13G1SB-U) 13G2AF steel 13GDF steel Steel 13GS (13GS-U) Steel 13GF (13GFA) Steel 14G2 Steel 14G2AF Steel 14G2AFD Steel 14GS Steel 14GF Steel 14ХГМДЦ Steel 14KhGS 15Г2АФД steel (15Г2АФДпс) 15G2SF steel 15G2SFD steel 15Г2ФБЮ steel 15GS steel 15GF steel 15GFD steel 15KhDP steel 15HSND steel Steel 16G (16GA) 16G2AF steel Steel 16G2AFD Steel 16G2SF (16G2SAF) 16GD steel 16GMYUCH steel 16GS steel 16GFB steel Steel 16D Steel 17G1S (17G1S-U) Steel 17GS Steel 18G2AF (18G2AFps) Steel 18Г2АФД (18Г2АФДпс) 18G2S steel 18YuT steel (Ch-33) Steel 19YuFT (Ch37) Steel 1Х2М1 Steel 20G2S 20GS steel Steel 20GS2 Steel 20GSF (20GSFL) Steel 20Х2Г2СР Steel 20KhG2Ts Steel 20ХГСС2 Steel 22G2 22GYu steel Steel 22C Steel 22Kh2G2AU Steel 22Kh2G2P Steel 23Cr2G2T Steel 25G2S Steel 25GS Steel 25C2P Steel 27GS Steel 28G2S1D Steel 28G2SFB (28G2SFBD) Steel 28C Steel 30HS2 Steel 32G2RPs Steel 35GS 45KhGMA steel Steel 80C Steel SVS-690 (Severstal-690) X56 steel

Designation

Name The value
Designation GOST Cyrillic 12Г2С
Designation GOST Latin 12G2C
Transliteration 12G2S
The chemical elements 12Mn2С

Description

12Г2С steel is used: for the manufacture of electrically welded pipes with a diameter of 530, 720 mm strength group C50 for construction of gas pipelines, oil pipelines and oil product pipelines.

Standards

Name Code Standards
Pipes steel and connecting parts to them В62 GOST 20295-85, GOST 24950-81, TU 14-3-1573-96
Sheets and stripes В33 TU 14-1-1921-76, TU 14-1-4323-88, TU 14-1-5241-93
Sheets and stripes В23 TU 14-1-3023-80

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu N As Ce
TU 14-1-1921-76 0.1-0.15 ≤0.035 ≤0.035 1.3-1.65 ≤0.3 0.4-0.6 ≤0.3 The rest ≤0.3 ≤0.012 - ≤0.03
TU 14-3-1573-96 0.1-0.15 ≤0.035 ≤0.035 1.3-1.65 ≤0.3 0.4-0.6 ≤0.3 The rest ≤0.3 ≤0.012 - -
TU 14-1-4323-88 0.09-0.15 ≤0.035 ≤0.04 1.3-1.7 ≤0.3 0.5-0.8 ≤0.3 The rest ≤0.3 - - -
TU 14-1-5241-93 ≤0.15 ≤0.04 ≤0.04 ≤1.7 ≤0.3 ≤0.8 ≤0.3 The rest ≤0.3 - ≤0.08 -
Fe is the basis.
According to TU 14-1-1921-76, instead of Ce, Ca ≤ 0.020% can be introduced.
According to TU 14-3-1573-96 carbon equivalent of Se ≤ 0.46%.
According to TU 14-1-4323-88 the chemical composition is given for steel grade 12G2S. For steel smelted with a scroll process, a copper content of up to 0.40% is allowed. In the finished rolled stock, provided mechanical properties are ensured, deviations in chemical composition are allowed in accordance with GOST 5632.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % kJ/m2, кДж/м2
Sheet metal as supplied at TU 14-1-5241-93 (samples transverse)
8-50 ≥285 ≥450 ≥21 -
Hot rolled plates for gas pipes (7,5-11,0 mm) TU 14-1-1921-76. Heating to 900-920 °C (exposure for 40 min), air cooling. Group strength C50
≥345 ≥490 ≥22 ≥390
The rental in the condition of delivery on the other 14-1-4323-88. In the graph indicated the value of KCU KCU-40 °C/KCU-75 °C
≤10 ≥345 ≥490 ≥21 ≥390/340
10-20 ≥325 ≥470 ≥21 ≥340/290
20-40 ≥305 ≥460 ≥21 ≥340/290
40-60 ≥285 ≥450 ≥21 ≥340/290
60-80 ≥275 ≥440 ≥21 ≥340/290
80-160 ≥265 ≥430 ≥21 ≥340/290
≤10 ≥375 ≥510 ≥20 ≥390/340
10-20 ≥355 ≥490 ≥20 ≥340/290
20-40 ≥335 ≥480 ≥20 ≥340/290
≤10 ≥345 ≥490 ≥21 ≥390/340
10-20 ≥325 ≥470 ≥21 ≥340/290
20-40 ≥305 ≥460 ≥21 ≥340/-
≤10 ≥375 ≥510 ≥20 ≥390/340
10-20 ≥355 ≥490 ≥20 ≥340/290
20-40 ≥335 ≥480 ≥20 ≥340/-
Longitudinal electric-welded pipes of oil and gas as delivered at TU 14-3-1573-96 (samples transverse; column cross section - outer diameter. wall thickness; in the graph the value is KCU KCU-40 °C)
1020 (10-12) ≥340 ≥490 ≥20 ≥294
530, 630, 720 (11-12) ≥340 ≥490 ≥20 ≥392
530, 630, 720 (7-10) ≥340 ≥490 ≥20 ≥294
820 (9-12) ≥340 ≥490 ≥20 ≥294

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
kJ/m2 Toughness

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