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 sT|s0,2, MPa σU, 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
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σU 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.