What is dual phase steel used for?

Dual-phase steels are often used in the following automobile applications: DP300/500 Roof Outer, Door Outer, Body Side Outer, Floor Panel. DP350/600 Floor Panel, Hood Outer, Body Side Outer, Cowl, Fender, Floor Reinforcements. DP500/800 Body Side Inner, Quarter Panel Inner, Rear Rails, Shock Reinforcements.

What is dual phase material?

Dual-phase steel (DP steel) is a high-strength steel that has a ferritic–martensitic microstructure. DP steels are produced from low or medium carbon steels that are quenched from a temperature above A1 but below A3 determined from continuous cooling transformation diagram.

What is the composition of dual phase steel?

Dual-phase (DP) steels are composed of ferrite and 5–20% of martensite, and their strength ranges from 500 to 1200 MPa. DP steels have a microstructure of mainly soft ferrite, with islands of hard martensite dispersed throughout.

What is the secondary phase in dual phase steel?

Dual-phase steels (DP steels) consist of ferrite and a dispersed hard martensitic second phase in the form of islands. Usually they are low-carbon low-alloy materials with 10-40 vol. % hard martensite or martensite-austenite particles embedded in a ductile ferrite matrix.

What is CP steel?

Complex Phase (CP) steels combine high strength with relatively high ductility. The microstructure of CP steels contains small amounts of martensite, retained austenite and pearlite within a ferrite/bainite matrix.

What is DP600 steel?

DP600-UC is a cold-rolled, uncoated dual phase steel with a strength of approximately 600 MPa and a formability that makes it suitable for deep drawn components.

What is DP980 steel?

DP steels are designated by their ultimate tensile strength (UTS) values and DP980 is the current highest grade of steel, with a UTS of 980 MPa.

How is maraging steel made?

Maraging steel is produced by heating the steel in the austenite phase region (at about 850 °C), called austenitising, followed by slow cooling in air to form a martensitic microstructure.

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