Industrialization of 3 rd Generation high strength steels for automobile : a first step. Alain Magoariec– ArcelorMittal Global R&D BUSINESS & INNOVATION.

Industrialization of 3rd Generation high strength steels for automobile : a first step.Alain Magoariec– ArcelorMittal Global R&D

BUSINESS & INNOVATION AUTOMOTIVE DAY - 15 MAY 2015 - SMART HAMBACH

2014

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CO2 emission & gasoline consumption regulations put pressure on Car Weight reduction.

Sustainable efforts of the steelmakers to innovate with new grades: Hot Press Hardened Steels & 3rd Generation AHSS for cold stamping.

These Advanced High Strength Steels match OEM’s Vehicle Safety Rules, and Cost, Manufacturability and Recyclability constraints.

Source: “Aachen Body Engineering Days”, Sept. 2012 - DrJHillmann

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Source: Weight Reduction in Automotive Design and Manufacture , HIS 2012.

2014

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n Energy absorption Anti-intrusion

Source: O. Bouaziz. Steel Research Inter. 2013

UTSThF 2 YsThF 75,1Anti intrusion force:Crash force:

Th: Steel thickness – UTS: Ultimate Tensile strength – Ys: Yield Strength

UTS

UTS

M

M

Ys

Ys

M

M

Impact on the AHSS design

Vehicle crash tests

Weight reduction

potential:

Trend: Increasing UTS & Ys strengths while keeping same formability.3

Weight reduction compliant with safety

2014

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• High formability combined with high cut edge stretching resistance.

• Weldability & joining facility.

• H-Embrittlement resistance (delayed fracture & corrosion stress).

Specimen Ys0,2 [MPa] UTS [MPa]

Fortiform®980

replaces DP600

JIS-TISO-RD

600-750 980-1130≥21≥19

≥20CR/EG

GIFortiform®

1050replaces DP780

JIS-TISO-RD

700-850 1050-1130≥16≥14

≥20 CR/EG

Fortiform®1180

replaces DP980

JIS-TISO-RD

850-1050 1180-1330≥14≥12

≥30CR/EG

GI

CoatingHF target Objective

No density reduction

HE%E%

Strength

Formability

DP600

DP780

DP980Y600

Fortiform®1050

Fortiform®980

Fortiform®1180

- 10% weigth reduction

1050CR X X XGI X XEG X X X

X4: Route finetuning

X3: 1st industrial

testingX5: industrial

X4: Robustness improvement

X2: lab conception

2016 Q1 2015 Q3 now now 2017 Q4

980 1180

Sample availability

Coating

Developmentstatus

Fortiform

Fortiform®980, 1050 and 1180: first 3G grades

2014

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16,712,21101731RD

17.6131080719RD

Tot El [%]UEl. [%]TS [MPa]YS [MPa]Dir.

16,712,21101731RD

17.6131080719RD

Tot El [%]UEl. [%]TS [MPa]YS [MPa]Dir.

Fortiform1050

Material is approved by two OEMs.Part manufacturability is confirmed.Information available on demand, and on our website http://automotive.arcelormittal.com/europe/EN 5

Fortiform®1050 CR/EG industrial

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Fortiform®

New PHS2000New MS1700

FORTIFORM® family is a major contribution to enrich ArcelorMittal current steel offer for automotive

FORTIFORM® family is a major contribution to enrich ArcelorMittal current steel offer for automotive

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Conclusion

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Maizières Les Metz R&D campus

Maizières Process

Jean-Paul ALLEMAND

Maizières Automotive Products

Michel BABBIT

Maizières Packaging

Philippe VELLUET

Maizières Mining & Mineral

ProcessingArmando CORREA

CEO : Frédéric GREIN

Shared Services Unit

Frédéric GREIN

4 research centres

Engineers & Technicians

195

Activities

190 30 12 85

- Cokemaking- Ironmaking- Steelmaking- Process Engineering- Measurement & Control

- Metallurgy: prospects & manufacturing- Surfaces and Coatings- Metallography- ProductsProperties

- Cans & components- Steels for packaging

- Iron Ore Beneficiation-Iron OreCharacterization-Coal preparation

- Human Resources- Controlling, Purchasing- Communication- Health, Safety, Security- Shared Services

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2014

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CanadaHamilton

USAEast Chicago

FranceForbach (*)GandrangeLe CreusotMaizièresMontataire

SpainAvilésBasque Country

LuxembourgEsch-sur-Alzette

BelgiumGentLiège (*)

Czech RepublicOstrava

(*) Strategic partner - Forbach: CPM - Liège: CRM

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11 R&D labs across the world