# US 10,480,049 B2 · Copper alloy and its uses

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- Number: US 10,480,049 B2
- Document ID: US10480049B2
- Status: Granted
- Kind: B2
- Application number: 15/475,781
- Filed: 2017-03-31
- Published: 2017-12-07
- Granted: 2019-11-19
- Earliest claimed: 2016-06-03
- Assignees: Wieland-Werke AG
- Applicants: Wieland-Werke AG
- Inventors: Igor Altenberger; Hans-Achim Kuhn
- Web page: https://patentgrep.com/patent/US10480049B2

## CPC

- C22C 9/06: with nickel or cobalt as the next major constituent
- C22C 9/01: with aluminium as the next major constituent
- F16C 33/121: {Use of special materials}
- F16C 2202/06: Strength or rigidity
- F16C 2202/32: Conductivity
- F16C 2204/10: Alloys based on copper
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- F16C: SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS

## Abstract

A copper alloy having the following composition (in % by weight): from 10.6 to 18% of Al, from 10.5 to 14.5% of Ni, optionally up to 2% of Fe, optionally up to 1% of Co, optionally up to 0.5% of Ti, optionally up to 0.5% of Mn, optionally up to 0.15% of B, optionally up to 0.1% of Ca, and optionally up to 0.1% of C, with the balance being copper and unavoidable impurities. Nickel aluminides of the NiAl type are embedded as precipitates in the microstructure of the alloy.

## Claims

### Claim 1

A copper alloy consisting of the following composition in % by weight:
from 10.6 to 18% of Al,
from 10.5 to 14.5% of Ni,
optionally up to 2% of Fe,
optionally up to 1% of Co,
optionally up to 0.5% of Ti,
optionally up to 0.5% of Mn,
optionally up to 0.15% of B,
optionally up to 0.1% of Ca, and
optionally up to 0.1% of C, with
the balance being copper,
characterized in that nickel aluminides of the NiAl type are embedded as precipitates in the microstructure of the alloy.

### Claim 2 (depends on 1)

The copper alloy according to claim 1, characterized in that the proportion of aluminum is at least 12% by weight and not more than 16% by weight.

### Claim 3 (depends on 1)

The copper alloy according to claim 1, characterized in that the proportion of nickel is at least 11% by weight and not more than 13% by weight.

### Claim 4 (depends on 1)

The copper alloy according to claim 1, characterized in that the ratio of the proportion of aluminum in % by weight to proportion of nickel in % by weight is at least 0.95 and not more than 1.28.

### Claim 5 (depends on 1)

A sliding element comprising a copper alloy according to claim 1.

### Claim 6 (depends on 1)

A plug connector comprising a copper alloy according to claim 1.

### Claim 7 (depends on 1)

A sealing element comprising a copper alloy according to claim 1.

### Claim 8 (depends on 1)

A tool comprising a copper alloy according to claim 1.

### Claim 9 (depends on 1)

A spring element comprising a copper alloy according to claim 1.

### Claim 10 (depends on 1)

A filter element comprising a copper alloy according to claim 1.