Steel 4KH5MF1S (ЭП572)

Designation

Name	The value
Designation GOST Cyrillic	4Х5МФ1С
Designation GOST Latin	4X5MF1C
Transliteration	4H5MF1S
By chemical elements	4Cr5MoV1С

Name	The value
Designation GOST Cyrillic	ЭП572
Designation GOST Latin	EP572
Transliteration	EhP572
By chemical elements	-

Description

4KH5MF1S steel is used: for the manufacture of forgings of various parts of General machinery; moulds die casting zinc, aluminium and magnesium alloys; hammer and pressing the inserts (thickness or diameter from 200 to 250 mm) during hot deformation of structural steels; tool for planting billets of alloyed structural and heat-resistant materials on horizontal forging machines.

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, TU 14-11-245-88, TU 14-1-1271-75
Blanks. Of the workpiece. Slabs	В31	OST 24.952.01-89
Processing of metals by pressure. Forgings	В03	TU 14-1-1530-75, TU 14-1-1828-76, TU 108.11.917-87

Chemical composition

Standard	C	S	P	Mn	Cr	Si	Ni	Fe	Cu	V	Ti	Mo	W
GOST 5950-2000	0.37-0.44	≤0.03	≤0.03	0.2-0.5	4.5-5.5	0.9-1.2	≤0.4	Rest	≤0.3	0.8-1.1	≤0.03	1.2-1.5	≤0.2
TU 108.11.917-87	0.3-0.38	≤0.025	≤0.025	≤0.6	4.5-5.5	0.7-1.2	≤0.5	Rest	≤0.4	0.8-1.2	-	1-1.5	-

Fe is the basis.
According to GOST 5950-2000 the chemical composition is given for steel grade 4Х5МФ1С.
According to TU 108.11.917-87, the chemical composition is given for steel grade 4Х5МФ1СА.

Mechanical properties

t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HRC
Forgings (samples). Quenching in oil from 1020 °C to + Leave (exposure 2 hours)
300	≥1490	≥1860	≥9	≥28	≥490	≥52
Forgings. Quenching in oil from 1020 °C + Vacation at 580 °C (exposure 2 hours)
-	≥1470	≥1670	≥10	≥40	≥390	-
Forgings (samples). Quenching in oil from 1020 °C to + Vacation at 580 °C (exposure 2 hours)
-	≥1470	≥1670	≥10	≥40	≥390	-
Forgings (samples). Quenching in oil from 1020 °C to + Leave (exposure 2 hours)
400	-	-	≥8	≥24	≥410	≥54
Forgings (samples). Quenching in oil from 1020 °C to + Vacation at 580 °C (exposure 2 hours)
-	≥1340	≥1620	≥11	≥48	≥540	-
Forgings (samples). Quenching in oil from 1020 °C to + Leave (exposure 2 hours)
500	≥1490	-	≥8	≥25	≥200	≥55
Forgings (samples). Quenching in oil from 1020 °C to + Vacation at 580 °C (exposure 2 hours)
-	≥1320	≥1490	≥11	≥46	≥510	-
Forgings (samples). Quenching in oil from 1020 °C to + Leave (exposure 2 hours)
600	≥1470	≥1620	≥10	≥46	≥440	≥50
Forgings (samples). Quenching in oil from 1020 °C to + Vacation at 580 °C (exposure 2 hours)
-	≥1270	≥1420	≥11	≥46	≥490	-
-	≥1170	≥1320	≥11	≥46	≥410	-

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
HRC	Rockwell hardness (indenter diamond spheroconical)

Physical characteristics

Temperature	Е, HPa	r, kg/m³	l, W/(m · °C)	R, Mr. · m
0	207	7716	22	553
20	207	7716	22	553
300	187	7627	29	715
600	160	7523	31	970
100	-	7692	25	591
200	-	7660	27	649
400	-	7593	30	798
500	-	7559	31	879
700	-	7490	31	1077
800	-	7459	31	1189
900	-	7438	32	1229

A description of the physical symbols

Name	Description
G	Modulus of elasticity shear torsion
r	Density
l	Coefficient of thermal conductivity
R	UD. the resistivity

Technological properties

Name	The value
The temperature of forging	Start - 1180 °C, the end - 850 °C slow Cooling in the wells.