Steel 10Г2ФБ
Designation
| Name |
The value |
| Designation GOST Cyrillic |
10Г2ФБ |
| Designation GOST Latin |
10G2FB |
| Transliteration |
10G2FB |
| The chemical elements |
10Mn2VNb |
Description
10Г2ФБ steel is used: for the manufacture of continuous cast slabs, rolled sheets and plates; spirally welded pipes with outer diameter of 1420 mm in construction of main gas pipelines on working pressure up to 7.4 MPa (75 kgf/cm2), designed to transport gas corrosionresisting; ekspandirovannogo electrically welded pipes with a diameter 711−1420 mm; welded longitudinal pipes of K60 strength group for the construction of gas pipelines, oil pipelines and oil product pipelines.
Standards
| Name |
Code |
Standards |
| Sheets and stripes |
В33 |
TU 14-1-4034-85, TU 14-1-4034-96, TU 14-1-4083-86 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-4036-86 |
| Sheets and stripes |
В23 |
TU 14-106-646-2002, TU 14-1-5508-2005 |
| Pipes steel and connecting parts to them |
В62 |
TU 14-3-1363-97, TU 14-3-1464-87, TU 14-3-1573-96, TU У 27.2-00191135-016-2007 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
Al |
V |
Ti |
Nb |
| TU 14-3-1363-97 |
0.09-0.12 |
≤0.006 |
≤0.02 |
1.55-1.75 |
≤0.3 |
0.15-0.35 |
≤0.3 |
The rest |
≤0.3 |
≤0.01 |
0.02-0.05 |
0.09-0.12 |
0.01-0.035 |
0.02-0.04 |
| TU 14-3-1573-96 |
0.09-0.12 |
≤0.006 |
≤0.02 |
1.55-1.75 |
≤0.3 |
0.15-0.35 |
≤0.3 |
The rest |
≤0.3 |
≤0.012 |
0.02-0.05 |
0.09-0.12 |
0.01-0.035 |
0.02-0.04 |
Fe is the basis.
According to TU 14-3-1363-97, steel can be treated with liquid synthetic slags and / or solid slag-forming mixtures, as well as complex powder materials containing calcium, rare earth materials, zirconium in a stream of argon. The total content of the latter should be 0.001-0.020%. The carbon equivalent of the ladle sample is ≤ 0.43%.
According to TU 14-3-1573-96 carbon equivalent of Se ≤ 0.43%. It is allowed to introduce into the steel a technological additive silicocalcium or rare-earth materials (REM) at the rate of 0.5-2.0 kg per 1 ton of steel.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
kJ/m2, кДж/м2 |
| Electric resistance welded steel pipes spirally in the delivery condition (properties of the metal pipes, KCU-60 °C |
|
≥461 |
≥588 |
≥20 |
≥490 |
| 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-60 °C) |
| 1020 (12-15) |
≥440 |
≥590 |
≥20 |
≥392 |
| 530, 630, 720 (10-15) |
≥440 |
≥590 |
≥20 |
≥392 |
| 530, 630, 720 (15-24) |
≥440 |
≥590 |
≥20 |
≥490 |
| 820 (10-15) |
≥440 |
≥590 |
≥20 |
≥392 |
| 820 (15-25) |
≥440 |
≥590 |
≥20 |
≥490 |
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 |
Technological properties
| Name |
The value |
| Weldability |
Steel with improved weldability. |
| Frost resistance |
Cold-resistant steel. |
