Steel 15G2SF
Designation
| Name |
The value |
| Designation GOST Cyrillic |
15Г2СФ |
| Designation GOST Latin |
15G2CF |
| Transliteration |
15G2SF |
| The chemical elements |
15Mn2СV |
Description
Steel 15G2SF used: for the manufacture of welded steel structures; as a base layer in the production of two-layer corrosion-resistant sheet metal.
Note
Low alloy steel manganese-vanadium. The degree of deoxidation — SP.
Steel 15G2SF provides strength class long products, strip and shaped rolled KP 390 with a thickness up to 20 mm.
Steel 15G2SF provides strength grade sheet, universal broadband rental and roll-formed profiles KP 390 with plate thickness of 32 mm. without the use of additional hardening treatment.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and general norms |
В20 |
GOST 19281-89 |
| Pipes steel and connecting parts to them |
В62 |
GOST 20295-85, GOST 24950-81 |
| Sheets and stripes |
В23 |
GOST 82-70, GOST 19282-73, TU 14-1-4502-88 |
| Sectional and shaped rolling |
В22 |
GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76 |
| Welding and cutting of metals. Soldering, riveting |
В05 |
OST 36-58-81 |
| Sheets and stripes |
В33 |
TU 14-1-4688-89, TU 14-1-5241-93, TU 05764417-028-94, TU 14-1-4212-87, TU 14-1-4431-88 |
| Sectional and shaped rolling |
В32 |
TU 14-136-367-2008 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-229-289-90 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
As |
Al |
V |
Ti |
| GOST 19282-73 |
0.12-0.18 |
≤0.04 |
≤0.035 |
1.3-1.7 |
≤0.3 |
0.4-0.7 |
≤0.3 |
The rest |
≤0.3 |
≤0.008 |
≤0.08 |
≤0.05 |
0.05-0.1 |
≤0.03 |
Fe is the basis.
According to GOST 19282-73, it is allowed to modify steel with calcium and rare-earth elements from the calculation of the introduction of not more than 0.02% calcium and 0.05% rare-earth elements into the metal.
According to GOST 19281-89 and GOST 19282-73, it is allowed to add aluminum and titanium from the calculation of the mass fraction in the rolled aluminum - no more than 0.050%, titanium - no more than 0.030%.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
| Without heat treatment - as supplied |
| 10-20 |
≥400 |
≥560 |
≥18 |
| 5-9 |
- |
≥560 |
≥18 |
| Rolled plates as supplied by TU 14-1-5241-93. Quenching + Tempering (samples transverse) |
| 8-50 |
≥390 |
≥510 |
≥19 |
| Bars and shapes of high-strength steel in the delivery state according to the GOST 19281-89 (specified strength class) |
| ≤20 |
≥390 |
≥530 |
≥18 |
| Plate and universal broadband rental in the state of delivery GOST 19282-73 |
| 5-32 |
≥390 |
≥550 |
≥18 |
| Plate and universal broadband rental in the state of delivery GOST 19282-73. Hardening + Vacation |
| 10-32 |
≥440 |
≥590 |
≥17 |
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 |
Technological properties
| Name |
The value |
| Weldability |
Without restrictions. |