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汽车工业通过减轻汽车的重量来节约燃料以致使高强度薄钢板受人重视。但是,一般的高强度钢的冷成形性较差—这是由于钢的高屈服强度、低的加工硬化率和低的延伸率造成材料的回弹和延伸性能差。为了有可能解决成形性的问题而发展双相钢。它与一般的高强度钢相比较,具有较低的屈服强度、较高的加工硬化率和较高的延伸率。目前,可供使用的双相钢的抗拉强度范围为400～1000兆巴(60,000到145000磅/吋~2)。
The automotive industry is saving fuel by reducing the weight of the car, giving high strength to the thin steel plate. However, the cold formability of typical high strength steels is poor - due to the poor rebound and elongation properties of the resulting materials due to the high yield strength of steels, low work hardening and low elongation. In order to solve the problem of formability and the development of dual-phase steel. Compared with the general high-strength steel, it has lower yield strength, higher work hardening rate and higher elongation. Tensile strength currently available for dual phase steels range from 400 to 1000 Megapascals (60,000 to 145,000 psi).