汽车用钢板中高强度钢板地球环境问题一低燃料（成本）费一轻质化连锁中，对轻质化材料的期望越来越高。将被高强度、坚硬材料所取代。然而，在这种情况下，在汽车用途上必不可缺少的，仍然是必须具备加工性能的这一点。也就是说，必须满足高强度下与高加工性能之间这一矛盾的 Automotive steel plate in the high-strength steel Earth environmental problems a low fuel (cost) fee a light chain, the expectation of lightweight materials is getting higher and higher. Will be replaced by high-strength, hard materials. However, in this case, it is still indispensable for the use of automobiles that this must still be the case for processing performance. In other words, this contradiction between high strength and high processability must be met