Docol 800CP is a type of complex phase steel (CP steel for short), which is an important category of high-strength automotive steel. The "800" in its name usually represents the specified minimum tensile strength of 800MPa. It has the characteristics of combining high strength with good formability. In the automotive industry, it can be used to manufacture structural parts and safety parts with strict material performance requirements

Mechanical Properties

Chemical Composition

Plating

Analysis of related characteristics and applications of Docol 800CP steel

Material property correlation

From the performance of the same type of complex phase steel (such as CP800), it can be seen that this type of steel usually requires high tensile strength, high hole expansion performance and good welding performance, which is difficult to produce and has a high market entry threshold. Its composition configuration and controlled rolling and controlled cooling process need to be optimized to meet the use requirements such as stamping forming and fatigue strength.

Typical applications in the automotive field

Complex phase steel (CP steel) is mainly used in chassis suspension parts, B-pillars, bumpers, seat rails and other parts in the automotive industry. These parts require materials with both strength and toughness. Combined with the case that CP800 steel can be used in large quantities for key parts such as automobile swing arms, it is speculated that Docol 800CP is also suitable for similar high-strength structural parts, such as chassis reinforcements or safety anti-collision parts.

Classification of high-strength automobile steel and positioning of complex phase steel

1. Main types of high-strength automobile steel

Dual-phase steel (DP steel): used for bottom cross members, anti-collision bars, etc.

Complex phase steel (CP steel): used for chassis suspension parts, B-pillars, etc.

Transformation induced plasticity steel (TRIP steel): used for B-pillar reinforcement plates, front longitudinal beams, etc.

Martensitic steel (MS steel): used for bumpers, door sill reinforcement plates, etc.

2. Technical status of complex phase steel

As the first generation of high-strength automobile steel, complex phase steel has made important contributions to automobile lightweighting, and Docol 800CP, as a complex phase steel of 800MPa level, represents a product with a higher strength level in this category and is suitable for key automobile parts with strict requirements on material properties.