Steel 12Х2МФСР
Designation
| Name |
The value |
| Designation GOST Cyrillic |
12Х2МФСР |
| Designation GOST Latin |
12X2MFCP |
| Transliteration |
12H2MFSR |
| The chemical elements |
12Cr2MoVСB |
Description
12Х2МФСР steel is used: for the manufacture of billets intended for the manufacture of seamless cold, warm, hot-wrought, including hot-pressed and hot-pressed reduced pipes for steam boilers and pipelines, installations with high and supercritical steam parameters and long time operation at temperatures up to +620 °C.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
В32 |
TU 14-1-1529-2003 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-4992-91 |
| Pipes steel and connecting parts to them |
В62 |
TU 14-3-463-2005, TU 14-3-460-2009, TU 14-3Р-55-2001, TU 14-3-460-2003 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
B |
Mo |
| TU 14-3-460-2003 |
0.08-0.15 |
≤0.025 |
≤0.025 |
0.4-0.7 |
1.6-1.9 |
0.4-0.7 |
≤0.25 |
The rest |
≤0.25 |
0.2-0.35 |
0.002-0.005 |
0.5-0.7 |
Fe is the basis.
According to TU 14-3R-55-2001, TU 14-1-1529-2003 and TU 14-3-460-2003 for steel made by scrap-process or from cuprous ores, the mass fraction of residual copper and nickel is allowed up to 0.30 % of each. A technological addition of rare earth elements is allowed to improve the quality of the metal.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
| Tubular billet + hot deformed Tubes (DH=57-465 mm) TU 14-3-460-2003. Normalization at 970-1000 °C, air cooling + Vacation at 750-780 °C (aged for at least 2 hours), air cooling |
| 20-25 |
≥275 |
490-690 |
≥21 |
| Seamless pipes for steam boilers and pipelines according to TU 14-3P-55-2001. Normalization at 970-1000 °C + Vacation at 750-780 (aged for at least 2 hours), air cooling |
|
≥206 |
- |
- |
|
≥195 |
- |
- |
| - |
≥274 |
≥470 |
≥21 |
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 |
