Ultrahigh-strength steels, like boron alloys, which meet automotive safety and crash requirements, are difficut to form with cold stamping, so hot stamping with die quenching has been applied.

• 超高强度钢，如可以满足汽车安全和碰撞要求的硼合金钢，很难以冷冲压的方式成型，而热冲压及其模具冷却得以应用。