Bainitic steel grade
Material of the quality HR660Y760T-CP-GI is used both in the car body and in the chassis. In the car body, the material is used primarily for safety-relevant components such as reinforcements and support structures.
In addition to the conventional hot strip version, the HR660Y760T-CP can be produced with the surface coatings ZM (StronSal®) and GI (hot dipped galvanized). Owing to the chemical composition of both support material and coating, a good weldability is given.
The hole expansion value of min. 40% and min. 50% is guaranteed for the order grades HR660Y760T-CP-GI xpand®40 and HR660Y760T-CP-GI xpand®50.
Multi phase steel for cold forming - Bainitic grade acc. to SZFG material data sheet
| Steel grade acc. to VDA 239-100 | Steel grade no. |
| HR440Y580T-FB-GI | - |
| HR660Y760T-CP-GI | - |
Mechanical properties acc. to VDA 239-100
| Steel grade | Yield strength ReH | Tensile strength Rm | Total elongation A1) |
| MPa | MPa | Nenndicke e: % | |
| HR440Y580T-FB | 440 - 600 | 580 - 700 | 1.80 ≤ e ≤ 3.00 mm: ≥ 15 |
| HR660Y760T-CP | 660 - 820 | 760 - 960 | 2.00 ≤ e ≤ 3.00 mm: ≥ 10 |
Surface finish
| Steel grade | NA | MA | MB | MC* |
| Thickness range | ||||
| mm | mm | mm | mm | |
| HR660Y760T-CP-GI | - | - | 2.00 - 3.00 | - |
Application examples
Because of its very good fatigue properties the HR660Y760T-CP-GI is particularly suitable for components in the chassis area that are subjected to high dynamic loads. The components benefit from the weight saving potential as well as the high strength of the material. Typical applications are as transverse control arms, trailing arms and spring control arms.
