This medium carbon alloy steel grade is widely used for many applications requiring high tensile strength and ductility combined with hardness in the R/C 40 range. The cold finished 4140 alloy steel bars are calcium treated; this addition greatly increases cutting speeds and tool life without sacrificing mechanical properties.
Grade / Shape |
Min (in) |
Max (in) |
Width Max (in) |
Lengths (ft) |
|---|---|---|---|---|
| 4140 ANN CD RD | 0.3125 | 4.5 | 10 to 12 | |
| 4140 ANN DCF Flats & SQ | 0.25 | 6 | 12 | 10 to 12 |
| 4140 ANN DCF Plate | 3 | 8 | 36 | 10 to 12 |
| 4140 ANN FG & RT RD | 12.125 | 18.25 | 18 to 24 | |
| 4140 ANN Plate | 0.5 | 4 | 96 | 10 to 12 |
| 4140 HR Plate | 0.5 | 5.75 | 96 | 10 to 12 |
| 4140 HR QT RD | 1 | 12 | 18 to 24 | |
| 4140 HRA RD | 1 | 12 | 18 to 24 | |
| 4140 NT Plate | 6 | 12.25 | 10 to 12 | |
| 4140 QT CD RD | 0.5 | 0.75 | 10 to 12 | |
| 4140 QT FG & RT RD | 12 | 18 | 18 to 24 |
Alloy Steel Bar Processing Services
- Production Cutting
- Special Cutting
- Flat Grinding
- Centerless Grinding
- Machining
- Heat Treating, Stress Relieving, Annealing
- Straightening
- Special Testing
- Deburring
- Peerless Steel checks all alloy steel bars for size, quality, and condition. We maintain accurate identification of grades and heats on all steel products.
