Ferritic stainless steel foil

Patent metadata

Field	Value
Publication number	US-9920409-B2
Application number	US-201314375044-A
Country	US
Kind code	B2
Filing date	Jan 24, 2013
Priority date	Jan 30, 2012
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

Provided is stainless steel foil that is suitably used for forming a catalyst carrier for an exhaust gas purifying facility, the catalyst carrier being installed in a vehicle that discharges exhaust gas having a temperature lower than the temperature of exhaust gas of a gasoline-powered automobile. The ferritic stainless steel foil contains, by mass %, C: 0.05% or less, Si: 2.0% or less, Mn: 1.0% or less, S: 0.005% or less, P: 0.05% or less, Cr: 11.0% to 25.0%, Ni: 0.05% to 0.30%, Al: 0.01% to 1.5%, Cu: 0.01% to 2.0%, N: 0.10% or less, and the balance being Fe and inevitable impurities.

First claim

The invention claimed is:

1. Ferritic stainless steel foil containing, by mass %, C: 0.02% or less, Si: 0.15% or less, Mn: 0.5% or less, S: 0.005% or less, P: 0.05% or less, Cr: 11.0% to 25.0%, Ni: 0.05% to 0.30%, Al: 0.32% to 1.0%, Cu: 0.01% to 2.0%, N: 0.10% or less, and the balance being Fe and inevitable impurities.

2. The ferritic stainless steel foil according to claim 1 further containing, by mass %, one or more elements selected from Nb: 0.01% to 1.0%, Mo: 0.01% to 3.0%, and W: 0.01% to 3.0%, the content of the one or more elements being 0.01% to 3.0% in total.

3. The ferritic stainless steel foil according to claim 1 further containing, by mass %, REM: 0.01% to 0.20%.

4. The ferritic stainless steel foil according to claim 1 further containing, by mass %, one or more elements selected from Ti: 0.01% to 1.0%, Zr: 0.01% to 0.20%, Hf: 0.01% to 0.20%, Ca: 0.0010% to 0.0300%, and Mg: 0.0015% to 0.0300%.

5. The ferritic stainless steel foil according to claim 1 having a thickness of 100 μm or less.

6. The ferritic stainless steel foil according to claim 2 further containing, by mass %, REM: 0.01% to 0.20%.

7. The ferritic stainless steel foil according to claim 2 further containing, by mass %, one or more elements selected from Ti: 0.01% to 1.0%, Zr: 0.01% to 0.20%, Hf: 0.01% to 0.20%, Ca: 0.0010% to 0.0300%, and Mg: 0.0015% to 0.0300%.

8. The ferritic stainless steel foil according to claim 3 further containing, by mass %, one or more elements selected from Ti: 0.01% to 1.0%, Zr; 0.01% to 0.20%, Hf: 0.01% to 0.20%, Ca; 0.0010% to 0.0300%, and Mg: 0.0015% to 0.0300%.

9. The ferritic stainless steel foil according to claim 2 having a thickness of 100 μm or less.

10. The ferritic stainless steel foil according to claim 3 having a thickness of 100 μm or less.

11. The ferritic stainless steel foil according to claim 4 having a thickness of 100 μm or less.

12. The ferritic stainless steel foil according to claim 6 further containing, by mass %, one or more elements selected from Ti: 0.01% to 1.0%, Zr: 0.01% to 0.20%, Hf: 0.01% to 0.20%, Ca: 0.0010% to 0.0300%, and Mg: 0.0015% to 0.0300%.

13. The ferritic stainless steel foil according to claim 6 having a thickness of 100 μm or less.

14. The ferritic stainless steel foil according to claim 7 having a thickness of 100 μm or less.

15. The ferritic stainless steel foil according to claim 8 having a thickness of 100 μm or less.

16. The ferritic stainless steel foil according to claim 12 having a thickness of 100 μm or less.

Assignees

• Jfe Steel Corp

Inventors

• Mizutani Akito
• Fujisawa Mitsuyuki
• Ota Hiroki
• Ogata Hiroyuki

Classifications

• C22C38/002

  containing In, Mg, or other elements not provided for in one single group C22C38/001 - C22C38/60 · CPC title

• C22C38/42

  with copper · CPC title

• C22C38/02

  containing silicon · CPC title

• C21D6/002

  containing Cr (C21D6/004 takes precedence) · CPC title

• C22C38/26

  with niobium or tantalum · CPC title