4X2NMF steel
4Cr2NMoV Steel
Steel 4Cr2NMF: Handbook of steels and alloys. Below is systematized information on the purpose, chemical composition, types of supply, substitutes, critical point temperatures, physical, mechanical, technological and foundry properties for the grade — Steel 4X2NMF.
General information about 4Kh2NMF steel
| Grade substitute |
| steel 38Х2НМФ. |
| Application |
| Forging dies with cube height up to 700 mm for hot stamping of parts of hard-to-strain materials. |
Chemical composition of 4X2HMF steel
| chemical element |
% |
| Vanadium (V) |
0.15−0.20 |
| Silicon (Si) |
0.17−0.37 |
| Manganese (Mn) |
0.50−0.80 |
| Molybdenum (Mo) |
0.40−0.60 |
| Nickel (Ni) |
0.80−1.10 |
| Sulfur (S), max. |
0.030 |
| Carbon (C) |
0.36−0.42 |
| Phosphorus (P), not more than |
0.030 |
| Chrome (Cr) |
2.00−2.50 |
Process properties of steel 4Cr2NiMoVF
| Forging temperature |
| Initial 1200, end 800. |
| Weldability |
| difficult to weld. |
| Tendency to tempering ability |
| Slightly inclined |
| Flockensitive |
| low sensitivity |
Steel 4Cr2HMF critical point temperature
| Critical point |
°С |
| Ac1 |
760 |
| Ac3 |
820 |
Steel hardness 4Х2НМФ
| Delivery condition, heat treatment regime |
NV |
| Forging with cross section up to 700 mm. Nomalization 890−910 C, air. Double tempering 530−620 C, cooling with furnace or in the air |
321−364 |
Hardenability of steel 4Х2НМФ
Hardening in water
| Distance from end face, mm / HRCe |
| 140 |
| 45 |
| Heat treatment |
Crest hardness, HRCe |
Distance from end to end to be cooled |
| Water hardening |
45 |
140 |
