Steel 4H5MFS (4Х5МФСА)

Designation

Name	The value
Designation GOST Cyrillic	4Х5МФС
Designation GOST Latin	4X5MFC
Transliteration	4H5MFS
By chemical elements	4Cr5MoVС

Name	The value
Designation GOST Cyrillic	4Х5МФСА
Designation GOST Latin	4X5MFCA
Transliteration	4H5MFSA
By chemical elements	4Cr5MoVС

Description

Steel 4H5MFS used: for the production of forgings of various parts of General machinery; molds for casting under pressure an aluminum and also zinc and magnesium alloys; small hammer stamps; large (thickness or diameter greater than 200 mm) hammer and pressing panels during hot deformation of structural steels and nonferrous alloys in a high-volume mass production.

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
Blanks. Of the workpiece. Slabs	В31	OST 24.952.01-89
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	0.32-0.4	≤0.03	≤0.03	0.2-0.5	4.5-5.5	0.9-1.2	≤0.4	Rest	≤0.3	0.3-0.5	≤0.03	1.2-1.5	≤0.2
TU 108.11.917-87	0.32-0.4	≤0.01	≤0.015	0.2-0.4	4.8-5.3	0.8-1.1	≤0.35	Rest	≤0.3	0.3-0.5	-	1.2-1.5	-

Fe is the basis.
According to GOST 5950-2000 the chemical composition is given for steel grade 4Х5МФС.
According to TU 108.11.917-87 the chemical composition is given for steel grade 4Х5МФСА.

Mechanical properties

Section, mm	t отпуска, °C	s_T\|s_0,2, MPa	σ_U, MPa	d₅, %	y, %	KCU, kJ/m²	HRC
Rolled steel. Quenching in oil from 1000-1020 °C + Vacation at 530-560 °C + Vacation at 500-520 °C
10	-	≥1480	≥1750	-	-	≥570	-
Long products (samples). Quenching in oil from 1000 °C to + Leave (exposure 2 hours)
-	500	≥1420	≥1720	≥12	≥45	≥490	≥50
Long products (samples). Quenching in oil from 1000 °C + Vacation at 560 °C (exposure 2 hours), air cooling
-	-	≥1570	≥1710	≥12	≥54	≥510	≥50
Long products (samples). Quenching in oil from 1000 °C to + Leave (exposure 2 hours)
-	550	≥1380	≥1670	≥10	≥50	≥560	≥48
Long products (samples). Quenching in oil from 1000 °C + Vacation at 560 °C (exposure 2 hours), air cooling
-	-	≥1320	≥1540	≥12	≥48	≥610	≥50
Long products (samples). Quenching in oil from 1000 °C to + Leave (exposure 2 hours)
-	600	≥1350	≥1490	≥13	≥53	≥590	≥45
Long products (samples). Quenching in oil from 1000 °C + Vacation at 560 °C (exposure 2 hours), air cooling
-	-	≥1270	≥1470	≥12	≥49	≥620	≥52
Long products (samples). Quenching in oil from 1000 °C to + Leave (exposure 2 hours)
-	650	≥960	≥1080	≥15	≥60	≥790	≥34
Long products (samples). Quenching in oil from 1000 °C + Vacation at 560 °C (exposure 2 hours), air cooling
-	-	≥1130	≥1370	≥10	≥52	≥550	≥47
-	-	≥1160	≥1290	≥12	≥50	≥500	≥44

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	r, kg/m³	l, W/(m · °C)	R, Mr. · m
0	7750	29	480
20	7750	29	480
100	7724	30	-
200	7697	30	-
300	7670	31	-
400	7641	33	-
500	7600	31	-
600	7573	30	-
700	7546	28	-
800	7520	26	-
900	7495	27	-

A description of the physical symbols

Name	Description
Е	The normal elasticity modulus
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.