Designation
| Name |
The value |
| Designation GOST Cyrillic |
19Х2НВФА |
| Designation GOST Latin |
19X2HBFA |
| Transliteration |
19H2NVFA |
| By chemical elements |
19Cr2НWV |
| Name |
The value |
| Designation GOST Cyrillic |
ЭИ763 |
| Designation GOST Latin |
EI763 |
| Transliteration |
EhI763 |
| By chemical elements |
- |
Description
19KH2NVFA steel is used: for the manufacture of critical shtampovannyh structures; for heavy welded assemblies and structures, not subjected to the annealing or normalizing after welding due to large dimensions or design features, as well as welded and nesvorny parts operating at temperatures up to 500 °C.
Note
Complex alloyed high-quality steel with low carbon content. Steel 19KH2NVFA (ЭИ763) strengthen by heat treatment (quenching in oil with subsequent tempering or normalizing with tempering).
Standards
| Name |
Code |
Standards |
| Sheets and strips |
В33 |
GOST 11268-76, GOST 11269-76, TU 14-1-1839-76 |
| Sheets and strips |
В23 |
GOST 82-70 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
Cu |
V |
Ti |
Mo |
W |
| GOST 11268-76 |
0.16-0.23 |
≤0.025 |
≤0.025 |
0.3-0.7 |
1.9-2.4 |
0.17-0.37 |
0.8-1.2 |
Rest |
≤0.25 |
0.18-0.28 |
≤0.03 |
≤0.15 |
1-1.4 |
Fe is the basis.
Mechanical properties
| Section, mm |
σU, MPa |
d5, % |
d10 |
KCU, kJ/m2 |
| Steel hot-rolled sheet (4-60 mm) 4-th and 5-th categories. Quenching in oil with 925±15 °C, a vacation at 450-550 °C, air cooling |
|
≥1130 |
≥9 |
- |
≥390 |
| A sheet of thin (≤3.9 mm) hot - and cold-rolled. Quenching in oil with 925 °C + vacation at 500-570 °C, air cooling |
|
≥1128 |
≥9 |
- |
- |
| Flats on the other 14-1-4118-2004 |
| ≤3.9 |
490-736 |
≥18 |
≥16 |
- |
Description mechanical marks
| Name |
Description |
| σU |
Limit short-term strength |
| d5 |
Elongation after rupture |
| d10 |
Elongation after rupture |
| KCU |
Toughness |
