“超高强度钢”的定义是相对于时代要求的技术进步程度而在变化的。一般讲，屈服强度在1 370MPa（140 kgf/mm2）以上，抗拉强度在1 620 MPa（165 kgf/mm2）以上的合金钢称超高强度钢。
To lightweight vehicle body, advanced steels as high strength steel and ultra-high strength steel, and lightweight materials as magnesium and aluminum alloys will be widely applied in vehicle body manufacturing.
为此,高强度钢、超高强度钢和铝、镁等轻质材料将广泛用于新型车身制造。
参考来源 - 单面自冲铆—粘连接工艺的试验研究及数值模拟·2,447,543篇论文数据，部分数据来源于NoteExpress
变形工艺的制定是微合金高强度钢开发和生产的关键环节。
It is the key aspect of researching and production micro-alloyed steel to draw up deformation parameter.
试验结果表明，孔冷挤压显著提高两种超高强度钢的疲劳飞行寿命。
The experimental results show that the coldworked holes significantly extend the fatigue life of ultra-high strength steel.
主要材料包括：高强度钢、不锈钢、高温合金、钛合金、铝合金等。
The metals include high strength steels, stainless steels, superalloys, titanium alloys, aluminum alloys, etc.
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