Steel 60ХГ
Steel 45KhNM (45KhNMA)
4X2NMF steel
Steel 55X
Steel 60Kh2SMF
Steel 60CrNiG
60KhN steel
75XM steel
Steel 75KhSMF
7X2SMF steel
Steel 90KhMF
Steel 9Х2МФ (9Х2МФА)
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Designation
Description
60ХГ steel is used: for the manufacture of work rolls shtripsovyh and small-section mill for hot rolling of metals.
Chemical composition
Fe is the basis.
Mechanical characteristics
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa | HRC |
|---|---|---|---|---|---|---|---|
| Section, mm | sT|s0,2, MPa | σB, MPa | d5, % | y, % | kJ/m2, кДж/м2 | Brinell hardness number, MPa | HRC |
| Barrel rolls for rail and structural steel and long products mills in the state of delivery | |||||||
| 500 | - | - | - | - | - | 255-302 | - |
| Rolls diameter up to 600 mm. Fit in the oven at 650 °C (exposure 4 h), the heating rate 100 °C/h to 820-860 °C (exposure 4 h), air cooling to 400 °C, then oven to 360 °With (extract 10 h), the heating rate 100 °C/h to 630-660 °C (aging for 50 h), cooling at 40 °C/h to 400 °C then with 15 °C/h up to 120 °C (exposure 4 h), air cooling (named place of cutting out of samples) | |||||||
| - | 460-520 | 810-900 | 15-18 | 30-38 | 240-390 | 229-255 | - |
| Barrel rolls for rail and structural steel and long products mills in the state of delivery | |||||||
| 950 | - | - | - | - | - | 229-285 | - |
| Rolls diameter up to 600 mm. Fit in the oven at 650 °C (exposure 4 h), the heating rate 100 °C/h to 820-860 °C (exposure 4 h), air cooling to 400 °C, then oven to 360 °With (extract 10 h), the heating rate 100 °C/h to 630-660 °C (aging for 50 h), cooling at 40 °C/h to 400 °C then with 15 °C/h up to 120 °C (exposure 4 h), air cooling (named place of cutting out of samples) | |||||||
| - | 510-550 | 860-910 | 15-17 | 32-36 | 270-290 | 241-255 | - |
| Rolls supplied | |||||||
| 600 | 440-550 | 800-910 | ≥18 | ≥38 | ≥350 | - | - |
| Rolls diameter up to 600 mm. Fit in the oven at 650 °C (exposure 4 h), the heating rate 100 °C/h to 820-860 °C (exposure 4 h), air cooling to 400 °C, then oven to 360 °With (extract 10 h), the heating rate 100 °C/h to 630-660 °C (aging for 50 h), cooling at 40 °C/h to 400 °C then with 15 °C/h up to 120 °C (exposure 4 h), air cooling (named place of cutting out of samples) | |||||||
| - | 440-550 | 800-910 | 15-20 | 36-41 | 270-440 | 229-255 | - |
| - | 430-540 | 810-920 | 12-18 | 28-36 | 240-340 | 229-255 | - |
| Rolls mills. Surface hardening with heating HDTV + Low vacation + Cooling | |||||||
| - | - | - | - | - | - | - | 51-63 |
| Rolls with a diameter of 600 mm. SV Fit in the oven at 630-660 °C (exposure 8 h), air cooling to 330-360 °C, heating rate of 100 °C/h to 820-860 °C (exposure 4 h), air cooling to 330-360 °C (exposure 6 h), the heating rate 100 °C/h to 630-660 °C (extract 40-50 h), air cooling (named place of cutting out of samples) | |||||||
| - | 390-580 | 710-950 | 14-21 | 28-51 | 150-590 | 207-269 | - |
| Rolls mills. Surface hardening with heating HDTV + Low vacation + Cooling | |||||||
| - | - | - | - | - | - | - | 42-57 |
| Rolls with a diameter of 600 mm. SV Fit in the oven at 630-660 °C (exposure 8 h), air cooling to 330-360 °C, heating rate of 100 °C/h to 820-860 °C (exposure 4 h), air cooling to 330-360 °C (exposure 6 h), the heating rate 100 °C/h to 630-660 °C (extract 40-50 h), air cooling (named place of cutting out of samples) | |||||||
| - | 390-580 | 710-940 | 14-20 | 28-52 | 180-590 | 207-255 | - |
| - | ≥450 | ≥840 | ≥15 | ≥23 | ≥160 | ≥241 | - |
Description mechanical marks
| Name | Description |
|---|---|
| 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) |
Technological properties
| Name | The value |
|---|---|
| Name | The value |
| Weldability | Steel is not used for welded structures. |
| Propensity to temper brittleness | Inclined. |
| Forging temperature | Beginning - 1220 °C, the end - of 800 °C. the cross Sections up to 200 mm are cooled in the pit, 201-800 mm is subjected to annealing by recrystallization and single hypothermia. |
| Flock-sensitive sensitivity | Sensitive. |
| Workability by cutting | In the normalized and tempered condition at NV 235-285 and blower SB=670 MPa Kn TV.SPL.=0,9 Kn b.St.=0,75. |
