Dual-phase steels with outstanding material properties for automotive engineering
General
Dual-phase steels consist of a basic ferrite matrix that holds a hard martensitic dual-phase. The proportion of martensite is set by using a selective cooling process. It critically determines the material‘s strength. Using various ingenious cooling strategies, Salzgitter Flachstahl manufactures the widest range of dual phase steels for a multitude of applications.
Characteristics:
| Grade | VDA-Norm | Yield strength Rp0,2 (MPa) | Tensile strength Rm (MPa) | Elongation A80 (%) |
| HDT550¹ | - | 300 – 400 | 530 – 620 | ≥ 24⁴ |
| HDT600¹ | HR330Y580T-DP³ | 330 – 470 | 580 – 670 | ≥ 24⁴ |
| HCT450X² | - | 260 – 340 | ≥ 450 | ≥ 27⁵ |
| HCT490X² | CR290Y490T-DP³ | 290 – 380 | ≥ 490 | ≥ 24⁵ |
| HCT590X² | CR330Y590T-DP³ | 330 – 430 | ≥ 590 | ≥ 20⁵ |
| HCT780X² | CR440Y780T-DP³ | 440 – 550 | ≥ 780 | ≥ 14⁵ |
| HCT980X² | CR590Y980T-DP³ | 590 – 740 | ≥ 980 | ≥ 10 |
| HCT980XG² | CR700Y980T-DP³ | 700 – 850 | ≥ 980 | ≥ 8 |
