Properties
Mechanical Properties
The values shown for the mechanical properties of HR CP800-UC are for test pieces taken parallel to the rolling direction unless otherwise stated.
| EN 10338: 2015 | VDA 239-100 | Tata Steel | ||||
|---|---|---|---|---|---|---|
| HDT760C | HR660Y760T-CP | HR CP800-UC Typical | ||||
| Yield strength Rp0,2 1 (N/mm²) | 660 - 830 | 660 - 820 | 700 | |||
| Tensile strength Rm (N/mm²) | N/mm² | ≥ 760 | 760 - 960 | 790 | ||
| Elongation after fracture A L0 = 50 mm |
% | - | ≥ 11 | 16 | ||
| Elongation after fracture A L0 = 5,65√S0 |
% | ≥ 12 | ≥ 13 | 17 | ||
| Elongation after fracture A L0 = 80 mm |
% | ≥ 10 | ≥ 10 | 14 | ||
1. Lower yield strength or 0.2 % proof stress applies.
2. These mechanical property values are quoted for the transverse rolling direction.
Hole expansion coefficient values can be supplied (although not as part of the production release test) – please contact us for details.
Chemical composition
Tata Steel supplies the following cast analysis with maximum values in weight percentages unless shown otherwise:
| HR CP800-UC Typical | ||
|---|---|---|
| C | Max. | 0.18 |
| Mn | Max. | 2.5 |
| Si | Max. | 1 |
| P | Max. | 0.08 |
| S | Max. | 0.015 |
| Altot | 0.015 - 1.2 | |
| Cr+Mo | Max. | 1 |
| Nb+Ti | Max. | 0.25 |
| V | Max. | - |
| B | Max. | 0.005 |