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Mat.No. 1.7264, DIN 20CrMo5
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Designation by Standards Brand Name Ravne No. Mat. No. DIN EN AISI ECMO100 721 1.7264 20CrMo5 - - Chemical Composition (in weight %) C Si Mn Cr Mo Ni V W Others 0.21 0.25 1.05 1.25 0.25 - - - - DescriptionAlloyed carbon steel. ApplicationsHigher stressed components – gears, shafts, crankshafts, connecting rods, cam shafts, etc. Physical properties (avarage values) at ambient temperatureModulus of elasticity [103 x N/mm2]: 210Density [g/cm3]: 7.80 Coefficient o...
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Designation by Standards
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| ECMO100 | 721 | 1.7264 | 20CrMo5 | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.21 | 0.25 | 1.05 | 1.25 | 0.25 | - | - | - | - |
Description
Alloyed carbon steel.
Applications
Higher stressed components – gears, shafts, crankshafts, connecting rods, cam shafts, etc.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100oC | 20-200oC | 20-300oC | 20-400oC | 20-500oC |
| 11.1 | 12.1 | 12.7 | 12.9 | 13.5 |
Continuous Cooling Transformation (CCT) Diagram
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Time-Temperature Transformation (TTT) Diagram
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Soft Annealing
Heat to 680-700oC, cool slowly. This will produce a maximum Brinell hardness of 217.
Carburizing
Temperature: 880-950oC. Cooling from carburizing temperature: oil (water), air, thermal bath, cooling box.
Hardening
Core hardening temperature: 850-880oC. Case hardening temperature: 810-840oC. Quenching media: oil, (water), thermal bath.
Tempering
Tempering temperature: 170-210oC.
Hardenability Diagram
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Forging
Hot forming temperature: 1050-850oC.
Machinability
No data.
Forms manufactured: Please see the Dimensional Sales Program.
Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.
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