Designation
| Name |
The value |
| Designation GOST Cyrillic |
16Г2АФД |
| Designation GOST Latin |
16G2AFD |
| Transliteration |
16G2AFD |
| By chemical elements |
16Mn2NVCu |
Description
16G2AFD steel is used: for the manufacture of welded metal; casings of blast furnaces.
Note
Steel low alloy manganese vanadium with nitrogen and copper. The degree of deoxidation — SP.
Standards
| Name |
Code |
Standards |
| Classification, nomenclature and General rules |
В20 |
GOST 19281-89 |
| Steel pipes and fittings to them |
В62 |
GOST 20295-85, GOST 24950-81 |
| Sheets and strips |
В23 |
GOST 82-70, GOST 19282-73, TU 14-1-5507-2005 |
| Bars and shapes |
В22 |
GOST 8278-83, GOST 8281-80, GOST 8282-83, GOST 8283-93, GOST 9234-74, GOST 11474-76 |
| Sheets and strips |
В33 |
TU 14-1-4431-88 |
| Bars and shapes |
В32 |
TU 14-136-367-2008 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
N |
As |
Al |
V |
Ti |
| GOST 19282-73 |
0.14-0.2 |
≤0.04 |
≤0.035 |
1.3-1.7 |
≤0.4 |
0.3-0.6 |
≤0.3 |
Rest |
0.15-0.3 |
0.015-0.025 |
≤0.08 |
≤0.05 |
0.08-0.14 |
≤0.03 |
| TU 14-1-5507-2005 |
0.14-0.18 |
≤0.006 |
≤0.012 |
1.3-1.7 |
≤0.4 |
0.2-0.5 |
≤0.3 |
Rest |
0.3-0.5 |
0.015-0.025 |
- |
- |
0.08-0.14 |
- |
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%.
According to TU 14-1-5507-2005 chemical analysis of 16G2AFD-III grade steel is presented.
Mechanical properties
| Section, mm |
sT|s0,2, MPa |
σU, MPa |
d5, % |
KCU, kJ/m2 |
| Rolled steel in the delivery state |
| 5-50 |
- |
≥580 |
≥20 |
- |
| The plates and universal broadband in the state of delivery GOST 19282-73 |
| 32-50 |
≥410 |
≥570 |
≥20 |
- |
| 5-32 |
≥440 |
≥590 |
≥20 |
- |
| Rolled plates in the state of delivery on the other 14-1-5507-2005. Normalization of the plates with a thickness up to 60 mm. Protivosokova processing sheets with a thickness over 60 mm. In the graph, the relative narrowing of the given parameter relative narrowing across rolling/in the direction of thickness of the sheet |
| 25-32 |
≥440 |
≥590 |
≥25 |
≥60/30 |
| 33-50 |
≥410 |
≥570 |
≥25 |
≥60/30 |
| 51-100 |
≥390 |
≥490 |
≥25 |
≥60/30 |
Description mechanical marks
| Name |
Description |
| 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 |
| KCU |
Toughness |
Technological properties
| Name |
The value |
| Weldability |
Welded without any restrictions. |
| Macrostructure and pollution |
The macrostructure of the leaves on the other 14-1-5507-2005, check for the etched cross Templeton, length not less than 100 mm should not be visible without using the magnifying devices of the traces of shrinkage looseness, blistering, delamination, cracks, inclusions and Kramatorsk, as well as placenow. |
| Impact strength |
Rolled plates with a thickness of 25-100 mm shall be tested for impact strength. Impact strength when tested must be: KCU-40°C ≥ 980 kJ/m2, KCU-70°C ≥ 290 kJ/m2, KCV-40°C ≥ 390 kJ/m2. |
