# US 2013/0156635 A1 · Aluminum alloy for die-casting

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- Number: US 2013/0156635 A1
- Document ID: US20130156635A1
- Status: Published application
- Kind: A1
- Application number: 13/818,118
- Filed: 2011-12-20
- Published: 2013-06-20
- Earliest claimed: 2011-01-27
- Assignees: Gk Corporation, Ltd.
- Inventors: Jung Taek Lee; Myeong Hyoen Nam; Kab Yong Park; Jong Hoon Jeong
- Web page: https://patentgrep.com/patent/US20130156635A1

## CPC

- C22C 21/00: Alloys based on aluminium
- C22C 1/026: {Alloys based on aluminium}
- C22C 1/03: using master alloys
- C22C: ALLOYS (treatment of alloys C21D, C22F)

## Abstract

The present invention relate to an aluminum alloy for die-casting. More particularly, the present invention relate to an aluminum alloy being usable for die-casting and including 1.0% to 5.0% by weight of Mn, 0.5% to 1.5% by weight of Zn, 1.0% to 2.0% by weight of Zr, 0.5% to 1.5% by weight of Cu and 85% to 97% by weight of aluminum. Surface smut due from silicon smutting is not caused after a molding process so that a product can have a clear color. Furthermore, the aluminum alloy can increase an adhesion strength of a coating layer thereby increasing a durability of a die-casting product. Furthermore, because the aluminum alloy does not include a heavy metal harmful to human being, the aluminum alloy may be non-toxic and environment-friendly.

## Claims

### Claim 1

An aluminum alloy for die-casting comprising 1.0% to 5.0% by weight of Mn, 0.5% to 1.5% by weight of Zn, 1.0% to 2.0% by weight of Zr, 0.5% to 1.5% by weight of Cu and 85% to 97% by weight of aluminum.

### Claim 2 (depends on 1)

The aluminum alloy for die-casting of claim 1, further comprising:
0.1% to 0.6% by weight of Si.

### Claim 3 (depends on 1)

The aluminum alloy for die-casting of claim 1, further comprising:
0.5% to 1.5% by weight of Fe.

### Claim 4 (depends on 1)

The aluminum alloy for die-casting of claim 1, further comprising:
equal to or less than 0.1% by weight of Ni.

### Claim 5 (depends on 1)

The aluminum alloy for die-casting of claim 1, further comprising:
0.5% to 1.0% by weight of Mg.

### Claim 6 (depends on 1)

The aluminum alloy for die-casting of claim 1, further comprising:
0.3% to 0.7% by weight of Ti.

### Claim 7 (depends on 1)

The aluminum alloy for die-casting of claim 1, wherein the aluminum alloy has a tensile strength of 180 Mpa to 250 Mpa, and an elongation of 5% to 10%.