7X2SMF steel
7Х2СМФ steel
7Cr2SMF steel: steel and alloys classifier. 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 7Х2СМФ.
General information on 7Cr2SMF steel
| Delivery type |
| rolls OST 24.013.20−85. |
| Application |
| Forged working rolls for cold rolling of metals. |
Chemical composition of steel 7Х2СМФ
| Chemical element |
% |
| Vanadium (V) |
0.15−0.30 |
| Silicon (Si) |
0.70−1.00 |
| Manganese (Mn) |
0.60−1.00 |
| Molybdenum (Mo) |
0.35−0.60 |
| Nickel (Ni), max. |
0.50 |
| Sulfur (S), not more than |
0.030 |
| Carbon (C) |
0.70−0.80 |
| Phosphorus (P), not more than |
0.030 |
| Chromium (Cr) |
1.70−2.20 |
Mechanical properties of 7Cr2SMF steel
Mechanical properties
| Heat treatment, delivery condition |
Section, mm |
HRCe |
| Barrels of working rolls of cold rolling mills after induction heat treatment, type 1 |
<650 |
HSD 95−105 |
| Barrels of work rolls of cold rolling mills after induction heating, type 2 |
<650 |
HSD 90−96 |
| Barrels of work rolls for hot strip mills after induction heating, type 3 |
<650 |
HSD 75−90 |
| Work roll necks |
<650 |
HSD 35−55 |
Process properties of 7Cr2oCrMoV steel
| Forging temperature |
| Beginning temperature 1200, the end temperature 800. |
Steel 7Х2СМФ critical point temperature
| Critical point |
°С |
| Ac1 |
780 |
| Ac3 |
835 |
| Ar3 |
700 |
| Ar1 |
625 |
| Mn |
180 |
Steel hardness 7Х2СМФ
| Delivery condition, heat treatment regime |
HSD |
| Barrels of work rolls of cold rolling mills after induction heat treatment, type 1. Section up to 650 mm |
95−105 |
| Barrels of work rolls of cold rolling mills after induction heat treatment, type 2. Section up to 650 mm |
90−96 |
| Barrels of work rolls of hot rolling mills after induction heat treatment, type 3. Cross-section up to 650 mm. |
75−90 |
| Worker roll necks. Cross-section up to 650 mm. |
35−55 |
Hardenability of steel 7Х2СМФ
Hardenability 900 °C.
| Face distance, mm / HRCe |
| 100 |
| 63−64 |
| Heat treatment |
Crittal hardness, HRCe |
Distance from end to be cooled |
| 900 °C hardening |
63−64 |
100 |
