METALLIC MATERIAL HAVING EXCELLENT METAL DUSTING RESISTANCE

Title:

METALLIC MATERIAL HAVING EXCELLENT METAL DUSTING RESISTANCE

Document Type and Number:

WIPO Patent Application WO/2007/080856

Kind Code:

A1

Abstract:

[PROBLEMS] To provide a metallic material which has excellent metal dusting resistance and is suitable as a material for use in a cracking furnace, a reforming furnace, a heating furnace, a heat exchanger or the like in a petroleum refining or petrochemical plant. [MEANS FOR SOLVING PROBLEMS] Disclosed is a metallic material having excellent metal dusting resistance, wherein the metallic material has the following chemical composition (by mass): C: 0.01-0.4%; Si: 0.01-2.5%; Mn: 0.01-2.5%; Cr: 15-35%; Ni: 20-65%; Cu: 0.05-20%; S: 0.1% or less; N: 0.25% or less; O (oxygen): 0.02% or less; and one or more elements selected from P in an amount of more than 0.05% and not more than 0.3%, Sb in an amount of 0.001-1% and Bi in an amount of 0.001-0.5%; with the remainder being Fe and impurities. The metallic material may additionally comprise one or more elements selected from the following elements: Nd: 0.001-0.15%; Co: 10% or less; Mo: 3% or less; W: 6% or less; Ti: 1% or less; Nb: 2% or less; B: 0.1% or less; Zr: 1.2% or less; Hf: 0.5% or less; Mg: 0.1% or less; Ca: 0.1% or less; Al: 0.8% or less; Y: 0.15% or less; La: 0.15% or less; and Ce: 0.15% or less.

Inventors:

NISHIYAMA YOSHITAKA (JP)
OTSUKA NOBUO (JP)

Application Number:

PCT/JP2007/050101

Publication Date:

July 19, 2007

Filing Date:

January 09, 2007

Export Citation:

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Assignee:

SUMITOMO METAL IND (JP)
NISHIYAMA YOSHITAKA (JP)
OTSUKA NOBUO (JP)

International Classes:

C22C38/60; C22C38/00

Foreign References:

JP2003073763A	2003-03-12
JP2005048284A	2005-02-24
JP2003247049A	2003-09-05
JPH0978204A	1997-03-25
JPH11172473A	1999-06-29
JP2003073763A	2003-03-12
JPS5366832A	1978-06-14
JPS5366835A	1978-06-14
JPS5743989A	1982-03-12
JPH1129776A	1999-02-02
JP2000509105A	2000-07-18

Other References: