Steel 4KH5MF1S (ЭП572)
Designation
| Name |
The value |
| Designation GOST Cyrillic |
4Х5МФ1С |
| Designation GOST Latin |
4X5MF1C |
| Transliteration |
4H5MF1S |
| The chemical elements |
4Cr5MoV1С |
| Name |
The value |
| Designation GOST Cyrillic |
ЭП572 |
| Designation GOST Latin |
EP572 |
| Transliteration |
EhP572 |
| The 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 |
| 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, TU 14-1-1271-75 |
| Bulls. Blanks. Slabs |
В31 |
OST 24.952.01-89 |
| Metal forming. 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 |
The 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 |
The 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 characteristics
| t отпуска, °C |
sT|s0,2, MPa |
σB, MPa |
d5, % |
y, % |
kJ/m2, кДж/м2 |
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 |
| 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 |
Е, ГПа |
r, кг/м3 |
l, Вт/(м · °С) |
R, НОм · м |
| 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 |
| Forging temperature |
Start - 1180 °C, the end - 850 °C slow Cooling in the wells. |
