# US 2021/0340648 A1 · Aluminium alloy, semi-finished product, can, method of producing a slug, method of producing a can, and use of an aluminium alloy

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- Number: US 2021/0340648 A1
- Document ID: US20210340648A1
- Status: Published application
- Kind: A1
- Application number: 17/272,686
- Filed: 2019-09-03
- Published: 2021-11-04
- Earliest claimed: 2018-09-07
- Assignees: Tubex Holding GmbH; Neuman Aluminium Austria GmbH
- Applicants: Tubex Holding GmbH; Neuman Aluminium Austria GmbH
- Inventors: Sebastian Stumpp; Dietmar Wiest; Otmar Hochecker; Helmut Klarum; Alexander Wimmer
- Web page: https://patentgrep.com/patent/US20210340648A1

## CPC

- C22C 21/00: Alloys based on aluminium
- B22D 21/007: {with low melting point, e.g. Al 659 degrees C, Mg 650 degrees C}
- B22D 25/06: by its physical properties (B22D27/00 takes precedence)
- C21D 1/18: Hardening (C21D1/02 takes precedence); Quenching with or without subsequent tempering (quenching devices C21D1/62)
- C22F 1/04: of aluminium or alloys based thereon
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- B22D: CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES (shaping of plastics or substances in a plastic state B29C; metallurgical processing, selection of substances to be added to metal C21, C22)
- C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B)
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)

## Abstract

An aluminium alloy includes 0.07% by weight to 0.17% by weight of silicon, 0.25% by weight to 0.45% by weight of iron, 0.05% by weight to 0.20% by weight of copper, 0.30% by weight to 0.50% by weight of manganese, 0.05% by weight to 0.25% by weight of magnesium, 0.01% by weight to 0.04% by weight of titanium, and the balance aluminium and, optionally, additional constituents.

## Claims

### Claim at position 1

1-15. (canceled)

### Claim 16

An aluminium alloy consisting of:
0.07% by weight to 0.17% by weight of silicon,
0.25% by weight to 0.45% by weight of iron,
0.05% by weight to 0.20% by weight of copper,
0.30% by weight to 0.50% by weight of manganese,
0.05% by weight to 0.25% by weight of magnesium,
0.01% by weight to 0.04% by weight of titanium, and
the balance aluminium and, optionally, additional constituents.

### Claim 17 (depends on 1)

The aluminium alloy according to claim 1, wherein the proportion by weight of silicon is 0.08% by weight to 0.14% by weight.

### Claim 18 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of iron is 0.30% by weight to 0.40% by weight.

### Claim 19 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of copper is 0.06% by weight to 0.12% by weight.

### Claim 20 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of manganese is 0.30% by weight to <0.50% by weight.

### Claim 21 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of magnesium is 0.06% by weight to 0.16% by weight.

### Claim 22 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of titanium is 0.015% by weight to 0.03% by weight.

### Claim 23 (depends on 16)

The aluminium alloy according to claim 16, wherein the proportion by weight of a single additional constituent is not more than 0.05% by weight and/or the proportion by weight of the additional constituents in total is not more than 0.15% by weight.

### Claim 24 (depends on 16)

The aluminium alloy according to claim 16, wherein the additional constituents are impurities.

### Claim 25 (depends on 16)

A semifinished part, slug, or can, comprising the aluminium alloy according to claim 16.

### Claim 26 (depends on 25)

A process of producing the slug according to claim 25, comprising:
a) providing aluminium and/or aluminium scrap,
b) melting the aluminium and/or the aluminium scrap,
c) providing the molten aluminium and/or the molten aluminium scrap with alloying elements, where silicon, iron, copper, manganese, magnesium and titanium are used as alloying elements,
d) casting the molten aluminium provided with the alloying elements and/or the molten aluminium scrap provided with the alloying elements to form a strip,
e) hot rolling the strip,
f) cold rolling the hot-rolled strip,
g) producing a raw slug from the cold-rolled strip,
h) heat treating the raw slug,
i) cooling the heat-treated raw slug at a cooling rate of ≥0.01 K/s, and
j) further processing the cooled raw slug to produce the slug.

### Claim 27 (depends on 26)

The process according to claim 26, wherein the heat-treated raw slug is cooled at a cooling rate of >50 K/s in step i).

### Claim 28 (depends on 26)

The process according to claim 26, wherein step i) is carried out by water cooling the heat-treated raw slug.

### Claim 29 (depends on 25)

A process of producing the can according to claim 25, comprising:
a) providing the slug,
b) forming the slug to give an unfinished can,
c) cutting the unfinished can to length, and
d) further processing the cut-to-length unfinished can to produce the can.