| Class | Maximum Chemical Composition (%) | CEV (%) | CEV Tolerance (%) | ||||
| C | Si | Mn | P | S | |||
| HRB400 | 0,25 | 0,8 | 1,6 | 0,045 | 0,045 | 0,54 | +0.03 |
| HRBF400 | |||||||
| HRB400E | |||||||
| HRBF400E | |||||||
| HRB500 | 0,55 | ||||||
| HRBF500 | |||||||
| HRB500E | |||||||
| HRBF500E | |||||||
| HRB600 | 0,28 | 0,58 | |||||
CEV = C + Mn/6 + (Cr+V+Mo)/5 + (Cu+Ni)/15
Nitrogen content must not exceed 0.012%
| Class | Lower Yield Strength | Tensile Strength | Elongation after fracture | Maximum total elongation | R°m/ReL | R°eL/ReL |
| (ReL) | (Rm) | (A) | (Agt) | |||
| Mpa | Mpa | % | % | |||
| min | min | min | min | min | max | |
| HRB400 | 400 | 540 | 16 | 7,5 | ||
| HRBF400 | ||||||
| HRB400E | 9,0 | 1,25 | 1,30 | |||
| HRBF400E | ||||||
| HRB500 | 500 | 630 | 15 | 7,5 | ||
| HRBF500 | ||||||
| HRB500E | 9,0 | 1,25 | 1,30 | |||
| HRBF500E | ||||||
| HRB600 | 600 | 730 | 14 | 7,5 |
R°m = actual tensile strength
R°eL = actual measured yield strength
Note :
For diameter 28-40mm elongation after broken (A) minus 1%
For diameter >40mm elongation after broken (A) minus 2%
| Class | Nominal Diameter | Bending Pin | Bending Angle | Precondition |
| HRB400 | 6-25 | 4d | 180° | Can not be repeated on the surface |
| HRBF400 | 28-40 | 5d | ||
| HRB400E | > 40-50 | 6d | ||
| HRBF400E | ||||
| HRB500 | 6-25 | 6d | ||
| HRBF500 | 28-40 | 7d | ||
| HRB500E | > 40-50 | 8d | ||
| HRBF500E | ||||
| HRB600 | 6-25 | 6d | ||
| 28-40 | 7d | |||
| > 40-50 | 8d |
| Nominal Diameter | Tolerance | Length Tolerance |
| mm | % | + 50 mm |
| 6-12 | ± 6.0 | |
| 14-20 | ± 5.0 | |
| 22-50 | ± 4.0 |