Description
Technical Parameters
4142 Alloy Steel Round Bar Stock
4142 Steel Bar Products Description
4142 round bar is a high-quality medium carbon alloy structural steel that has been quenched and tempered. 4142 medium carbon alloy steel bar, has excellent toughness, ductility, wear resistance and strength.
4142 solid steel round bar is also easy to process in the annealed state, with a more wear-resistant surface finish. At the same time, 4142 steel rod bar has excellent weldability and can be easily processed in the annealed state.
4142 Alloy Steel Round Bar Stock Products Details
Equivalent grades
| GB | DIN | AISI | JIS |
| 42CrMo | 1.7225 | 4140 | SCM440 |
Chemical Composition
| C | Si | Mn | Cr | Mo | P | S |
| 0.38-0.43 | 0.40max | 0.60-0.90 | 0.90-1.20 | 0.15-0.30 | ≤0.035 | ≤0.035 |
Surface condition
| Black surface/ Grinded/ Machined |
Hardness
| Annealed HBS 217 max |
Heat treatment
| Forging | Heat to 1150°C. Hold until uniform. Minimum forging temperature 850°C.Cool slowly in ashes or sand etc. | ||||||||
| Annealing | Heat to 830°C-850°C.Cool in furnace. | ||||||||
| Normalising | Heat to 870°C-900°C.Cool in still air. | ||||||||
| Stress Relieving | Annealed: Heat to 600°C-650°C.Hardened: Heat to 500°C-550°C.Cool in still air. | ||||||||
| Hardening | Heat to 830°C-880°C. Quench in oil or polymer. | ||||||||
| Tempering | Heat to 450°C-700°C cool in still air. NB. Tempering within the range 200°C-420°C will result in temper brittleness and should be avoided. | ||||||||
Steel 4142 Round Products Image
GNEE Group Team Photo
GNEE Group Exhibition Pictures
GNEE Group Customer Visits
If you have more needs and questions about 4142 Alloy Steel Round Bar Stock, please contact us!