Name	The value
Name	The value
Designation GOST Cyrillic	04Х14К13Н4М3ТВ
Designation GOST Latin	04X14K13H4M3TB
Transliteration	04H14K13N4M3TV
By chemical elements	04Cr14Co13Н4Mo3TiW

Name	The value
Name	The value
Designation GOST Cyrillic	ЭП767
Designation GOST Latin	EP767
Transliteration	EhP767
By 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
Name	Code	Standards
Bars and shapes	В32	TU 14-1-1149-74
Blanks. Of the workpiece. Slabs	В31	TU 14-1-1214-75
Sheets and strips	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
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	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 properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²
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
Name	Description
s_T\|s_0,2	Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σ_U	Limit short-term strength
d₅	Elongation after rupture
y	The relative narrowing
KCU	Toughness

Steel 04Х14К13Н4М3ТВ (ЭП767)

Designation