MITTAL HI FORM HF70Y80T

Alloy Digest ◽  
2006 ◽  
Vol 55 (12) ◽  
Keyword(s):  
Tensile Strength ◽  
Dual Phase Steel ◽  
Martensite Phase ◽  
Ferrite Phase ◽  
High Yield ◽  
Dual Phase ◽  
High Yield Strength ◽  
Steel Microstructure ◽  
Automotive Body ◽  
Soft Ferrite

Abstract MITTAL HI FORM HF 70Y80T is a dual-phase steel with 550 MPa tensile strength used for automotive body structures. The dual-phase steel microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The dual-phase 550 MPa grades are high yield strength to tensile strength ratio alloys for improved structural behavior. This datasheet provides information on tensile properties as well as deformation. It also includes information on forming. Filing Code: SA-557. Producer or source: Mittal Steel USA Flat Products.

MITTAL DI-FORM T500

Alloy Digest ◽  
2006 ◽  
Vol 55 (9) ◽  
Keyword(s):  
Tensile Strength ◽  
Automotive Industry ◽  
Dual Phase Steel ◽  
High Strength ◽  
Martensite Phase ◽  
Ferrite Phase ◽  
Dual Phase ◽  
Advanced High Strength Steel ◽  
Automotive Body ◽  
Soft Ferrite

Abstract Mittal Di-Form T500 is a dual-phase steel intended primarily for exposed outer automotive body panels (door, hoods, and fenders). Dual-phase steels are one of the important advanced high-strength steel products developed for the automotive industry. Their microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The Di-Form grades exhibit low yield-to-tensile strength ratios and the name corresponds to the tensile strength. This datasheet provides information on tensile properties as well as deformation and fatigue. It also includes information on forming and joining. Filing Code: SA-556. Producer or source: Mittal Steel USA Flat Products.

MITTAL DI-FORM T590, T600

Alloy Digest ◽  
2007 ◽  
Vol 56 (1) ◽  
Keyword(s):  
Tensile Strength ◽  
Automotive Industry ◽  
High Strength ◽  
Martensite Phase ◽  
Ferrite Phase ◽  
Dual Phase ◽  
Bend Strength ◽  
Low Carbon ◽  
Advanced High Strength Steel ◽  
Soft Ferrite

Abstract MITTAL DI-FORM T590 and T600 are low-carbon dual-phase steels containing manganese and silicon. Dual-phase (DP) steels are important advanced high-strength steel (AHSS) products developed for the automotive industry. Their microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The DI-FORM grades exhibit low yield-to-tensile strength ratios. The numeric designation in the grade name corresponds to the tensile strength in MPa. This datasheet provides information on microstructure, tensile properties, and bend strength as well as fatigue. It also includes information on forming. Filing Code: SA-558. Producer or source: Mittal Steel USA Flat Products.

MITTAL DI-FORM 140T, HB T965

Alloy Digest ◽  
2007 ◽  
Vol 56 (4) ◽  
Keyword(s):  
Tensile Strength ◽  
Yield Strength ◽  
Martensite Phase ◽  
Carbon Steels ◽  
Ferrite Phase ◽  
Dual Phase ◽  
Low Carbon ◽  
Dp Steel ◽  
Low Carbon Steels ◽  
Soft Ferrite

Abstract MITTAL DI-FORM 140T and HB T965 are low carbon steels with dual phase manganese and silicon composition. Dual-phase (DP) steel microstructures typically consist of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The dual-phase grades, including those with high tensile strengths of 965 MPa (140 ksi), that are designed for forming (DI-FORM), also have low yield-strength-to-tensile-strength ratios to improve formability. This datasheet provides information on microstructure and tensile properties as well as deformation and fatigue. It also includes information on forming and surface treatment. Filing Code: SA-566. Producer or source: Mittal Steel USA Flat Products.

MITTAL DI-FORM T780, T980

Alloy Digest ◽  
2007 ◽  
Vol 56 (3) ◽  
Keyword(s):  
Tensile Strength ◽  
Automotive Industry ◽  
High Strength ◽  
Martensite Phase ◽  
Carbon Steels ◽  
Ferrite Phase ◽  
Dual Phase ◽  
Low Carbon ◽  
Advanced High Strength Steel ◽  
Soft Ferrite

Abstract MITTAL DI-FORM T780 and T980 alloys are low-carbon steels with a manganese and silicon composition. Dual-phase (DP) steels are one of the important advanced high-strength steel (AHSS) products developed for the automotive industry. Their microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The DI-FORM grades exhibit low yield-to-tensile strength ratios and the name corresponds to the tensile strength. This datasheet provides information on forming. Filing Code: SA-563. Producer or source: Mittal Steel USA Flat Products.

MITTAL DI-FORM T700, HF80Y100T

Alloy Digest ◽  
2007 ◽  
Vol 56 (2) ◽  
Keyword(s):  
Automotive Industry ◽  
High Strength ◽  
Martensite Phase ◽  
Carbon Steels ◽  
Ferrite Phase ◽  
Dual Phase ◽  
Low Carbon ◽  
Advanced High Strength Steel ◽  
Dp Steels ◽  
Soft Ferrite

Abstract MITTAL DI-FORM T700 and HF80Y100T are low-carbon steels with a manganese and silicon composition. Dual-phase (DP) steels are one of the important advanced high-strength steel (AHSS) products developed for the automotive industry. Their microstructure typically consists of a soft ferrite phase with dispersed islands of a hard martensite phase. The martensite phase is substantially stronger than the ferrite phase. The DI-FORM grades exhibit low yield-to-tensile strengths, and the numeric designation in the name corresponds to the tensile strength. This datasheet provides information on microstructure and tensile properties as well as deformation and fatigue. It also includes information on forming. Filing Code: SA-561. Producer or source: Mittal Steel USA Flat Products.

DURIMPHY

Alloy Digest ◽  
2007 ◽  
Vol 56 (2) ◽  
Keyword(s):  
Tensile Strength ◽  
Corrosion Resistance ◽  
Yield Strength ◽  
Physical Properties ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
High Yield ◽  
High Yield Strength ◽  
Precision Alloys ◽  
Very High

Abstract Durimphy is a maraging steel with 1724 MPa (250 ksi) tensile strength and a very high yield strength due to precipitation hardening. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: FE-140. Producer or source: Metalimphy Precision Alloys.

Characterization of a Continuously Cooled Dual-Phase Steel Microstructure

2018 ◽  
Vol 49 (12) ◽  
pp. 6010-6021 ◽  
Author(s):  
F. Farias ◽  
M. Balbi ◽  
M. N. Batista ◽  
I. Alvarez-Armas
Keyword(s):  
Dual Phase Steel ◽  
Dual Phase ◽  
Steel Microstructure

scholarly journals Metallurgical Effects of Niobium in Dual Phase Steel

Metals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 504 ◽  
Author(s):  
Hardy Mohrbacher ◽  
Jer-Ren Yang ◽  
Yu-Wen Chen ◽  
Johannes Rehrl ◽  
Thomas Hebesberger
Keyword(s):  
Dual Phase Steel ◽  
Dual Phase ◽  
Steel Matrix ◽  
High Ductility ◽  
Dp Steel ◽  
Industrial Processing ◽  
Automotive Body ◽  
Niobium Microalloying ◽  
Body Design ◽  
Kinetics Of

Dual phase (DP) steels are widely applied in today’s automotive body design. The favorable combination of strength and ductility in such steels is in first place related to the share of ferrite and martensite. The pronounced work hardening behavior prevents localized thinning and allows excellent stretch forming. Niobium microalloying was originally introduced to dual phase steel for improving bendability by refining the microstructure. More recently developed “high ductility” (HD) DP steel variants provide increased drawability aided by a small share of austenite retained in the microstructure. In this variant niobium microalloying produces grain refinement and produces a dispersion of nanometer-sized carbide precipitates in the steel matrix which additionally contributes to strength. This study investigates the microstructural evolution and progress of niobium precipitation during industrial processing of high-ductility DP 980. The observations are interpreted considering the solubility and precipitation kinetics of niobium. The influences of niobium on microstructural characteristics and its contributions to strength and formability are discussed.

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