Shanghai Bozhong Metal Group Co., Ltd.
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Designation by Standards
| Brand Name | Ravne No. | Mat. No. | DIN | EN | AISI |
| 18CD4 | 743 | 1.7243 | 18CrMo4 | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.19 | 0.25 | 0.75 | 1.05 | 0.20 | - | - | - | - |
Description
Alloy special steel.
Applications
Case hardening steels: Gear components of all kind and cog wheels. Open die steel forgings for general engineering purposes.
Physical properties (avarage values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.85
Thermal conductivity [W/m.K]: 20.0
Soft Annealing
Heat to 680-700oC, cool slowly ib furnace. This will produce a maximum Brinell hardness of 207.
Normalizing
Normalizing temperature: 860-900oC.
Hardening
Harden from a temperature of 850-880oC followed by oil or water quenching. Hardness after quenching is 39-47 HRC.
Tempering
Tempering temperature: 595-700oC.
Forging
Hot forming temperature: 1100-850oC.
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.