The Cu bearing cold rolled sheet steel has excellent deep drawability as IF steel, and its strength exceeds upper limit of IF steel. The steel has a very high r value of 1.90 and a tensile strength of 590 MPa.

• 含铜冷轧薄板在保持IF钢优良深冲性能的基础上，其强度超过IF钢的强度上限，该钢平均塑性应变比高达1.；9，抗拉强度可达590MPa。