Grades of Steel used in the Automotive Industry

This is a list of common steel types used in the automotive industry. Notice the overlap of steels in the different classes?

Standard Steels

• Commercial steel (CS)
• Drawing steel (DS)
• Deep drawing steel (DDS)
• Interstitial-free (IF)

Mild High-Strength Steels

• Bake hardenable (BH)
• Isotropic (IS)
• Carbon-Manganese (CMn)
• High-strength low alloy (HSLA)
• Dual Phase (DP) – Complex phase (CP)
• Transformation induced plasticity (TRIP)
• Martensitic (MART)

Ultra High-Strength Steels

• Dual Phase (DP) – Complex phase (CP)
• Transformation induced plasticity (TRIP)
• Martensitic (MART)
• UHSS alloyed with boron (BOR)

http://www.i-car.com/html_pages/technical_information/advantage/advantage_online_archives/2006/061206.shtml