Properties
Properties
Mechanical properties
The values shown for the mechanical properties in the table below are for test pieces taken parallel to the rolling direction.
| As delivered | Grade | CR 22MnB5 Guaranteed |
CR 22MnB5 Typical |
|---|---|---|---|
| Yield strength1 Rp0.2 | N/mm² | ≥ 300 | 340 - 440 |
| Tensile strength Rm | N/mm² | 500 - 580 | 500 - 580 |
| Elongation | % | ≥ 20 | > 21 |
| r-value | - | 0.90 - 1.0 | |
| n-value | - | > 0.150 |
| Hot formed | Grade | CR 22MnB5 Guaranteed |
CR 22MnB5 Typical |
||
|---|---|---|---|---|---|
| Yield strength 1 Rp0.2 | N/mm² | 1000 - 1250 | 1025 - 1100 | ||
| Tensile strength Rm | N/mm² | 1300 - 1600 | 1420 - 1520 | ||
| Elongation | % | ≥ 5 | 5 - 7 | ||
1. Yield strength refers to the 0.2% proof strength for the product.
Elongation after fraction A uses test piece length L0 = 80 mm.
Chemical composition
The table below shows the chemical composition to the draft EN 10338: 2015 (for dual phase steel) and EN 10083-3: 2006 (for hot forming steel) specifications.
| CR 22MnB5 Guaranteed |
CR 22MnB5 Typical |
||
|---|---|---|---|
| Grade | |||
| C | Max. | 0.23 | 0.22 |
| Mn | Max. | 1.3 | 1.2 |
| P | Max. | 0.02 | 0.01 |
| S | Max. | 0.010 | 0.005 |
| Si | Max. | 0.3 | 0.24 |
| Altot | 0.02 - 0.06 | 0.04 | |
| Cr + Mo 1 | Max. | 0.3 | 0.2 |
| Nb + Ti 2 | Max. | 0.04 | 0.03 |
| V | Max. | - | - |
| B | Max. | 0.005 | 0.003 |