	US 12,305,263 B2
	CLAD 2XXX-series aerospace product
Bernd Jacoby, Limburg (DE); Achim Bürger, Höhr-Grenzhausen (DE); Sabine Maria Spangel, Koblenz (DE); and Philippe Meyer, Agnetz (FR)
Assigned to Novelis Koblenz GmbH, Koblenz (DE)
Appl. No. 17/753,337
Filed by Aleris Rolled Products Germany GmbH, Koblenz (DE)
PCT Filed Aug. 13, 2020, PCT No. PCT/IB2020/057627 § 371(c)(1), (2) Date Feb. 28, 2022, PCT Pub. No. WO2021/044239, PCT Pub. Date Mar. 11, 2021.
Claims priority of application No. 19195491 (EP), filed on Sep. 5, 2019.
Prior Publication US 2022/0316033 A1, Oct. 6, 2022
Int. Cl. C22C 21/06 (2006.01); B32B 15/01 (2006.01); C22C 21/16 (2006.01); C22F 1/047 (2006.01)

CPC C22C 21/06 (2013.01) [B32B 15/016 (2013.01); C22C 21/16 (2013.01); C22F 1/047 (2013.01)]

14 Claims

1. A rolled composite aerospace product comprising a 2XXX-series core layer and an Al—Mg alloy clad layer coupled to at least one surface of the 2XXX-series core layer, wherein the Al—Mg alloy is a 5XXX-series aluminium alloy comprising 0.4% to 4.8% Mg, wherein the 2XXX-series alloy of the 2XXX-series core layer has a composition comprising, in wt. %,

Cu 1.9% to 7.0%,

Mg 0.30% to 1.8%,

Mn up to 1.2%,

Si up to 0.40%,

Fe up to 0.40%,

Cr up to 0.35%,

Zn up to 1.0%,

Ti up to 0.15%,

Zr up to 0.25%,

V up to 0.25%,

Li up to 2.0%,

Ag up to 0.80%,

Ni up to 2.5%,

balance being aluminium and impurities.