Steel 5KHNM

Designation

Name	The value
Designation GOST Cyrillic	5ХНМ
Designation GOST Latin	5XHM
Transliteration	5HNM
By chemical elements	5CrНMo

Description

5KHNM steel is used: for the manufacture of forgings parts, General engineering; hammer stamps vapor and pneumatic hammers weight of falling parts over 3 tons; press tools and dies high-speed stamping machine for hot deforming of light non-ferrous alloys; blocks of matrices for inserts of horizontal forging machines; solid-rolled rings for different purposes.

Note

In the manufacture of forgings from ingots weighing more than 21 tons casting steel must be made in a vacuum.

Standards

Name	Code	Standards
Bars and shapes	В22	GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Sheets and strips	В33	GOST 4405-75, TU 14-131-971-2001
Bars and shapes	В32	GOST 5950-2000, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, OST 1 92049-76, TU 14-1-1226-75, TU 14-11-245-88
Blanks. Of the workpiece. Slabs	В31	OST 24.952.01-89, TU 108.06.109-87
Processing of metals by pressure. Forgings	В03	TU 108.11.917-87

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
GOST 5950-2000	0.5-0.6	≤0.03	≤0.03	0.5-0.8	0.5-0.8	0.1-0.4	1.4-1.8	Rest	≤0.3	≤0.15	≤0.03	0.15-0.3	≤0.2

Fe is the basis.

Mechanical properties

Section, mm	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HB, MPa	HRC
Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C
100-200	≥1420	≥1570	≥9	≥35	≥343	375-429	42-47
Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C
-	-	-	-	-	-	-	≥43
Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C
200-300	≥1270	≥1470	≥11	≥38	≥440	352-397	40-44
Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C
-	-	-	-	-	-	-	≥39
Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C
300-500	≥1130	≥1320	≥12	≥36	≥490	321-375	37-42
Forgings 100-200 mm. Quenching in oil from 850 °C + Vacation at 450 °C
-	-	-	-	-	-	-	≥37
Forgings. Quenching in oil from 850 °C + Vacation at 460-520 °C
500-700	≥930	≥1180	≥15	≥40	≥784	302-341	35-39
100	-	-	-	-	-	-	≥57

Description mechanical marks

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
HB	Brinell hardness number
HRC	Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C
100	38	300	-
200	40	250	126
300	42	200	-
400	42	160	126
500	44	-	-
600	46	-	142
800	-	-	142

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
Weldability	does not apply to welded structures.
Склонность к отпускной хрупкости	tend not
The temperature of forging	Start - 1240 °C, the end - 750 °C. the cross Sections up to 100 mm ogledate in the air, 101-350 mm - in the pit.
Flock-sensitive sensitivity	sensitive
Machinability	In the annealed condition with blower SB 286 HB=900 MPa Kn TV.SPL.=0.6 Kn b.St.=0.3

Temperature	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C
100	38	300	-
200	40	250	126
300	42	200	-
400	42	160	126
500	44	-	-
600	46	-	142
800	-	-	142

Temperature	l, W/(m · °C)	R, Mr. · m	a, 10^-6 1/°C
100	38	300	-
200	40	250	126
300	42	200	-
400	42	160	126
500	44	-	-
600	46	-	142
800	-	-	142