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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

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