As we all know,auto steel with the rapid development of China’s economy. In recent years, the requirements for the lightweight of automobiles have also been increasing, and high-strength steels, advanced high-strength steels or ultra-high-strength steels are also being used more and more widely.
Adopt the famous “banana map” in the current popular industry: each type of steel is positioned according to its strength and elongation.
Divided by tensile strength：
High strength steel：TS>=340MPa（Cold Rolled); TS>=370MPa（Hot Rolled&Acid cleaning);
Super high strength steel: TS>780MPa
Divided by Yield Strength：
High strength steel：YS>=210MPa
Super high strength steel: YS>550MPa
According to metallurgical mechanism：Mild steel
Ordinary high-strength steel HSS
Advanced high strength steel AHSS
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In the modern automobile manufacturing industry, about 60%-75% of the parts are made by stamping process.As shown in the picture：
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