AL-MG-SI ENERGY ABSORPTION EXTRUSION COMPONENT AND METHOD OF MAKING THEREOF

(19)

(11)

EP 4 249 142 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	08.11.2023 Bulletin 2023/45

(43)	Date of publication A2:
	27.09.2023 Bulletin 2023/39

(21)	Application number: 23173415.3

(22)	Date of filing: 03.07.2020

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International Patent Classification (IPC):

C22C 21/02^(2006.01)
C22C 21/08^(2006.01)
B21C 23/14^(2006.01)
B21C 23/00^(2006.01)

C22C 21/04^(2006.01)
C22F 1/05^(2006.01)
B21C 29/00^(2006.01)

(52)	Cooperative Patent Classification (CPC):
	C22C 21/02; C22C 21/04; C22C 21/08; C22F 1/05; B21C 23/002; B21C 23/142; B21C 29/003

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

10.07.2019 US 201962872384 P
28.04.2020 US 202016860797

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	20183958.6 / 3763844

(71)	Applicant: Kaiser Aluminum Fabricated Products, LLC
	Foothill Ranch, CA 92610 (US)

(72)	Inventors:
	ARMANIE, Kevin P. Amherst, 14228 (US) GERBERICK, Walter Westerville, 43081 (US) MATUSKA, Robert A. Heath, 43056 (US)

(74)	Representative: FRKelly
	27 Clyde Road Dublin D04 F838 Dublin D04 F838 (IE)

(54)	AL-MG-SI ENERGY ABSORPTION EXTRUSION COMPONENT AND METHOD OF MAKING THEREOF

(57) The present invention relates to an aluminum 6XXX (Al-Mg-Si) alloy extrusion component exhibiting a superior combination of strength and energy absorption for crash management applications in automotive markets and for other applications where energy absorption is a critical property. These components provide yield strengths greater than 260 MPa, and preferably greater than 280 MPa, while simultaneously providing energy absorption per unit cross-sectional area of greater than 20 kJ/mm² using the defined crush testing parameters in the present specification.

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