1200 hot drawing PH or B steel microstructure: Ferrite and pearlite (before heat treatment), martensite (after heat treatment).

HC450/950TW common TWIP cold rolled steel microstructure: with single-phase austenite

Compared with the dual-phase steel with the same tensile strength, the yield strength of CP steel is obviously much higher.

Compared with the dual-phase steel with the same tensile strength, the yield strength of CP steel is obviously much higher, and at the same time with high bending and reaming performance etc.

Mainly based on bainite and (or) ferrite matrix, and usually distributed small amounts of martensite, retained austenite and pearlite structure.

Compared with the dual-phase steel with the same tensile strength, the yield strength of CP steel is obviously much higher.