Steel 04Х14К13Н4М3ТВ (ЭП767)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
04Х14К13Н4М3ТВ |
| Designation GOST Latin |
04X14K13H4M3TB |
| Transliteration |
04H14K13N4M3TV |
| The chemical elements |
04Cr14Co13Н4Mo3TiW |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП767 |
| Designation GOST Latin |
EP767 |
| Transliteration |
EhP767 |
| The chemical elements |
- |
Description
04Х14К13Н4М3ТВ steel is used: for the production of rocket and space technology; knots of welded structures, working in conditions of cryogenic temperatures to 20 K; dental instrument (staferov, trowel, spatulas, medical).
Note
Maraging steel.
Standards
| Name |
Code |
Standards |
| Sectional and shaped rolling |
В32 |
TU 14-1-1149-74 |
| Bulls. Blanks. Slabs |
В31 |
TU 14-1-1214-75 |
| Sheets and stripes |
В33 |
TU 14-1-4753-89, TU 14-1-4754-89 |
Chemical composition
| Standard |
C |
S |
P |
Mn |
Cr |
Si |
Ni |
Fe |
V |
Ti |
Mo |
W |
Zr |
Co |
| TU 14-1-1149-74 |
≤0.04 |
≤0.01 |
≤0.01 |
≤0.2 |
13.5-15 |
≤0.2 |
3.8-4.8 |
The rest |
≤0.15 |
0.2-0.5 |
2.6-3.2 |
0.3-0.5 |
≤0.01 |
13-14 |
Fe is the basis.
According to TU 14-1-1149-74, the chemical composition is given for steel grade 04H14K13N4M3TV-VD. Mass fraction of zirconium is calculated.
Mechanical characteristics
| Section, mm |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
| Samples. Annealing in air from 750 °C + aged at 520 °C (extract 5 h), air cooling or Quenching from 1000 °C + cold Treatment at -70 °C + aged at 520 °C (extract 5 h), air cooling (in the column specified impact toughness KCV, j/cm2) |
| - |
≥1700 |
≥1900 |
≥9 |
- |
≥25 |
| - |
≥1200 |
≥1300 |
≥13 |
- |
≥50 |
| Bars on the other 14-1-1149-74 on delivery |
|
≥1275 |
≥1370 |
≥12 |
≥50 |
≥780 |
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 |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
