# US 11,441,208 B2 · Nickel based alloy

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- Number: US 11,441,208 B2
- Document ID: US11441208B2
- Status: Granted
- Kind: B2
- Application number: 17/281,389
- Filed: 2019-09-05
- Published: 2022-02-03
- Granted: 2022-09-13
- Earliest claimed: 2018-10-10
- Assignees: Siemens Energy Global GmbH & Co. KG
- Applicants: Siemens Energy Global GmbH & Co. KG
- Inventors: Magnus Hasselqvist
- Web page: https://patentgrep.com/patent/US11441208B2

## CPC

- C22C 19/056: {with the maximum Cr content being at least 10% but less than 20%}
- C22F 1/10: of nickel or cobalt or alloys based thereon
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- 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

A nickel based superalloy, including: Chromium (Cr) 12.0%-14.0%, Molybdenum (Mo) 1.5%-3.0%, Tungsten (W) 2.5%-4.5%, Aluminum (Al) 4.0%-5.0%, Titanium (Ti) 1.8%-2.8%, Niobium (Nb) 1.5%-3.5%, Hafnium (Hf) 0.8%-1.8%, Carbon (C) 0.03%-0.13%, Boron (B) 0.005%-0.025%, Silicon (Si) 0.005%-0.05%, and optionally: Cobalt (Co) 0.0%-10.0%, Tantalum (Ta) 0.0%-3.0%, Zirconium (Zr) 0.0%-0.03%, especially remainder Nickel.

## Claims

### Claim 1

A Nickel based alloy, comprising (in wt %):
Chromium (Cr) 12.0%-14.0%,
Molybdenum (Mo) 1.5%-3.0%,
Tungsten (W) 2.5%-4.5%,
Aluminum (Al) 4.0%-5.0%,
Titanium (Ti) 1.8%-2.8%,
Niobium (Nb) 1.5%-3.5%,
Hafnium (Hf) 0.8%-1.8%,
Carbon (C) 0.03%-0.13%,
Boron (B) 0.005%-0.025%,
Silicon (Si) 0.005%-0.05%,
and optionally:
Cobalt (Co) 0.0%-10.0%,
Tantalum (Ta) 0.0%-3.0%,
Zirconium (Zr) 0.0%-0.03%,
remainder Nickel.

### Claim 2 (depends on 1)

The Nickel based alloy according to claim 1, comprising (in wt %):
Cr
12.5%
Co
5.0%
Mo
1.8%
W
3.8%
Al
4.5%
Ti
2.2%
Ta
2.2%
Nb
2.2%
Hf
1.0%
C
0.07%
B
0.01%
Zr
0.01%
Si
0.01%.

### Claim 3 (depends on 1)

The Nickel based alloy according to claim 1, comprising (in wt %):
Cr
12.5%
Co
5.0%
Mo
1.8%
W
3.8%
Al
4.5%
Ti
2.4%
Nb
3.2%
Hf
1.2%
C
0.07%
B
0.01%
Zr
0.01%
Si
0.01%.

### Claim 4 (depends on 1)

The Nickel based alloy according to claim 1, comprising 2.0 wt %-2.4 wt % Niobium (Nb).

### Claim 5 (depends on 1)

The Nickel based alloy according to claim 1, comprising 3.0 wt %-3.4 wt % Niobium (Nb).

### Claim 6 (depends on 1)

The Nickel based alloy according to claim 1, comprising 0.8 wt % 1.2 wt % Hafnium (Hf).

### Claim 7 (depends on 1)

The Nickel based alloy according to claim 1, comprising 1.0 wt %-1.4 wt % Hafnium (Hf).

### Claim 8 (depends on 1)

The Nickel based alloy according to claim 1, comprising 2.2 wt % Tantalum (Ta).

### Claim 9 (depends on 1)

The Nickel based alloy according to claim 1, comprising 0.01 wt % Zirconium (Zr).

### Claim 10 (depends on 1)

The Nickel based alloy according to claim 1, comprising no Tantalum (Ta).

### Claim 11 (depends on 1)

The Nickel based alloy according to claim 1, comprising 2.2 wt % Titanium (Ti).

### Claim 12 (depends on 1)

The Nickel based alloy according to claim 1, comprising 2.4 wt % Titanium (Ti).

### Claim 13 (depends on 1)

The Nickel based alloy according to claim 1, comprising 1.8 wt % Molybdenum (Mo).

### Claim 14 (depends on 1)

The Nickel based alloy according to claim 1, comprising 3.8 wt % Tungsten (W).

### Claim 15 (depends on 1)

The Nickel based alloy according to claim 1, comprising 4.5 wt % Aluminum (Al).

### Claim 16 (depends on 1)

The Nickel based alloy according to claim 1, comprising 12.5 wt % Chromium (Cr).

### Claim 17 (depends on 1)

The Nickel based alloy according to claim 1,
wherein the Nickel based alloy consists of (in wt %) the listed elements.

### Claim 18 (depends on 2)

The Nickel based alloy according to claim 2,
wherein the Nickel based alloy consists of (in wt %) the listed elements.

### Claim 19 (depends on 3)

The Nickel based alloy according to claim 3,
wherein the Nickel based alloy consists of (in wt %) the listed elements.