Steel 4H5MFS (4Х5МФСА)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
4Х5МФС |
| Designation GOST Latin |
4X5MFC |
| Transliteration |
4H5MFS |
| The chemical elements |
4Cr5MoVС |
| Name |
The value |
| Designation GOST Cyrillic |
4Х5МФСА |
| Designation GOST Latin |
4X5MFCA |
| Transliteration |
4H5MFSA |
| The 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 |
| Sectional and shaped rolling |
В22 |
GOST 1133-71, GOST 2590-2006, GOST 2591-2006 |
| Sheets and stripes |
В33 |
GOST 4405-75, TU 14-131-971-2001 |
| Sectional and shaped rolling |
В32 |
GOST 5950-2000, GOST 7417-75, GOST 8559-75, GOST 8560-78, GOST 14955-77, TU 14-11-245-88 |
| Bulls. Blanks. Slabs |
В31 |
OST 24.952.01-89 |
| Metal forming. 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 |
The 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 |
The 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 characteristics
| Section, mm |
t отпуска, °C |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
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 |
| Section |
Section |
| sT|s0,2 |
Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2% |
| σB |
Limit short-term strength |
| d5 |
Elongation after rupture |
| y |
The relative narrowing |
| kJ/m2 |
Toughness |
| HRC |
Rockwell hardness (indenter diamond spheroconical) |
Physical characteristics
| Temperature |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
| 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 |
| Forging temperature |
Start - 1180 °C, the end - 850 °C slow Cooling in the wells. |
