1.1 This specification covers cold-rolled, complex phase (CP) grade, dual phase (DP) grade, and transformation induced plasticity (TRIP) grade steel sheet in coils and cut lengths. 1.2 Product furnished under this specification shall conform to the applicable requirements of the latest issue of Specification A568/A568M , unless otherwise An Overview of Dual-Phase Steels:Advances in Dual-phase (DP) steel is the flagship of advanced high-strength steels, which were the first among various candidate alloy systems to find application in weight-reduced automotive components. On the one hand, this is a metallurgical success story:Lean alloying and simple thermomechanical treatment enable use of less material to accomplish more performance while complying with demanding
ArcelorMittal Dual Phase 1180 Very High Strength Cold Rolled Steel Categories:Metal; Ferrous Metal; Alloy Steel. Material Notes:Description:Dual Phase steels offer an outstanding combination of strength and drawability as a result of their microstructure, in which a hard martensitic or bainitic phase is dispersed in a soft ferritic matrix. Characteristics of Highly Formable 590-980MPa Grade (a) 590MPa grade DP steel sheet (b) 980MPa grade DP steel sheet 5m EL () TS (MPa) YP (MPa) Steel TS grade Category 590MPa Dual Phase 387 613 34 Galvannealed (GA) steel (Developed) Dual Phase 481 828 23 780MPa TRIP 478 823 29 980MPa Dual Phase 619 1,037 18 590MPa Dual Phase 388 633 33 Cold-rolled (CR) steel 780MPa Dual Phase 509 838 22 Characterization of Mechanically Sheared Edges of Dual Characterization of Mechanically Sheared Edges of Dual Phase Steels Xin Wu and Hamed Bahmanpour Department of Mechanical Engineering, Wayne State University, Detroit, MI 48202 dual phase (DP) steel has its unique phase martensite steel a high edge strain gradient is
joining of dual phase steels. In the paper results from welding tests together with welding recommendations are presented for the dual phase steels. The denomination of the DP steels in this article is as follows. Docol stands for cold rolled steel, Dogal stands for hot dip galvanised. The digits in the denomination stands for the Dual Phase Steel - an overview ScienceDirect TopicsThe rise of DP steels in 1975 and their development for the initial 25 years did not go above tensile strength of 600700 MPa as was summarized, in particular, in the book Low-alloyed dual-phase steels, published in 1986 (Ref. , in Russian), whereas current requirements from leading carmakers assume DP steels of up to 1200 MPa tensile strength with ductility approaching the achieved Dual Phase and Multiphase Steels according to VDA 239-100VDA 239 CR330Y590T-DP-GA50 / 50-U. Cold-rolled dual-phase steel with minimum yield strength 330 MPa and minimum tensile strength 590 MPa, hot-dip coated with a zinc-iron alloy coating with a coating weight of at least 50 g / m² per side, surface quality for non-outer skin or interior parts.
What are dual-phase steels? Dual-Phase steels (DP steels) are a part of the Advanced High Strength Steel (AHSS) family.. Ferrite-Martensite dual-phase steel is a low-to-medium carbon material with between 5-50% volume fractional martensite islands that are dispersed in a soft ferrite matrix.In addition to martensite, bainite and retained austenite components can also exist; these are normally MODE I FRACTURE AT SPOT WELDS IN DUAL-PHASE transportation industries [1 -3]. The unique mechanical behavior of DP steels includes continuous yielding, a low yield/tensile ratio, a high rate of work hardening, and high uniform and total elongation . The term dual-phase steel refers to the predominance of two Overview of steel grades ContentDC, MHZ DP-K ®DP-W MS-W DX Hot-rolled dual-phase steel DP-W ® offers particular advantages in the thicker sheet metal segment for weight-saving production of components such as profiles, body reinforcements, chassis parts, wheels, etc. In addition to the conventional dual-phase steels, DP-K® 330Y590T DH, DP-K® 420Y590T, DP-K® 440Y780T DH,
Trends in Commercial Use of DP Steels Dual Phase steel 590 MPa found use in many 2004 and 2005 models. Several automotive companies are actively investigating the use of 780 MPa Dual Phase steels for 2007 and 2008 models. Some companies have already shown interest in exploring 980 MPa Dual Phase SSAB Docol Tube 980DP precision tube - SSABDocol® Tube 980 is advanced ultra-high-strength precision tube made from dual-phase steel. Available in circular, square and rectangular shapes, it comes either with cold rolled (uncoated) or galvanized surface. Customized shapes and other tailoring options are available upon request. Weldability of a Dual-Phase Sheet Steel by the Gas Metal Dual-phase (DP) sheet steels have recently been used for automotive manufacturing to reduce vehicle weight and improve fuel economy. Dual-phase steels offer higher strength without reduced formability when compared to conventional high strength low alloy (HSLA) steels and so thinner gauge DP sheet steel can be used to meet the same design requirements.
Year by year the user and process site of steelmarket keep growing and lay claim to the steelmakers. The researchers, developers and technologists use every effort to try to produce steels with compound properties. From claim of users especially the Automotive Industry developed the DP- (Dual Phase) and TRIP - steels (TRansformation Induced Placticity). Dual-phase steels - Steel manufacturing - thyssenkruppHot-rolled dual-phase steels DP-W® are particularly suitable for weight-saving production of wheels, chassis parts, profiles, body reinforcements, etc. Cold-rolled dual-phase steels, steels DP-K® are suitable for both complex structural parts, e. g., side members and cross members, as well as stretch-formed exterior parts with special requirements in terms of buckling strength (doors, roofs