CA2711415A1

CA2711415A1 - Carburization resistant metal material

Info

Publication number: CA2711415A1
Application number: CA2711415A
Authority: CA
Inventors: Yoshitaka Nishiyama; Takahiro Osuki; Satoshi Matsumoto
Original assignee: Individual
Current assignee: Nippon Steel Corp
Priority date: 2008-02-27
Filing date: 2009-02-23
Publication date: 2009-09-03
Anticipated expiration: 2029-02-23
Also published as: CN101946016B; JPWO2009107585A1; KR101210113B1; CN101946016A; CA2711415C; JP4329883B1; DK2246454T3; EP2246454A1; WO2009107585A1; EP2246454A4; US20100034690A1; ES2545488T3; KR20100092498A; EP2246454B1

Abstract

A metal material which exhibits both excellent workability and excellent metal dusting resistance and which is suitable for use as the material in a cracking furnace, a reforming furnace, a heating furnace, or a heat exchanger in petroleum refining or petrochemical plants or the like. A carburization-resistant metal material characterized by containing by mass C: 0.08 to 0.4%, Si: 0.6 to 2.0%, Mn: 0.05 to 2.5%, P: 0.04% or less, S: 0.015% or less, Cr: 18 to 30%, Ni: 20 to less than 30%, Cu: 0.5 to 10.0%, Al: 0.01 to 1%, Ti: 0.01 to 1%, N: 0.15% or less, O(oxygen): 0.02% or less with the balance consisting of Fe and impurities and by satisfying relationship (1). The material may further contain one or more of Co, Mo, W, B, V, Zr, Nb, Hf, Mg, Ca, Y, La, Ce and Nd. C>= 0.062×Si + 0.033×Cu - 0.004×Cr +
0.043 (1) (wherein each symbol of element represents the content of the element in mass%)

Claims

Claim 1.

A carburization resistant metal material characterized by consisting of, by mass%, C: 0.08 to 0.4%, Si: 0.6 to 2.0%, Mn: 0.05 to 2.5%, P: 0.04% or less, S:
0.015% or less, Cr: 22 to 30%, Ni: 20% or higher and less than 30%, Cu: 0.5 to 10.0%, Al: 0.01 to 1%, Ti: 0.01 to 1%, N: 0.15% or less, and O(oxygen): 0.02% or less , the balance being Fe and impurities, and satisfying Expression (1).

C>= 0.062xSi + 0.033xCu - 0.004xCr + 0.043 ... (1) in which the symbol of element in Expression (1) represents the content of that element in mass%.
Claim 2.

A carburization resistant metal material characterized by consisting of, by mass%, C: 0.08 to 0.4%, Si: 0.6 to 2.0%, Mn: 0.05 to 2.5%, P: 0.04% or less, S:
0.015% or less, Cr: 18 to 30%, Ni: 20% or higher and less than 30%, Cu: 0.5 to 10.0%, Al: 0.01 to 1%, Ti: 0.01 to 1%, N: 0.15% or less, and O(oxygen): 0.02% or less , the balance being Fe and impurities, and satisfying Expression (1).

C>= 0.062xSi + 0.033xCu - 0.004xCr + 0.043 ... (1) in which the symbol of element in Expression (1) represents the content of that element in mass%.
Claim 3.

The carburization resistant metal material according to claim 1 or 2, characterized by further containing, by mass%, at least one kind of a component selected from at least one group of the first group to the fifth group described below:

first group: Co: 10% or less, second group: Mo: 2.5% or less and W: 5% or less, third group: B: 0.1% or less, V: 0.5% or less, Zr: 0.1% or less, Nb: 2% or less, and Hf:
0.5% or less, fourth group: Mg: 0.1% or less and Ca: 0.1% or less, fifth group: Y: 0.15% or less, La: 0.15% or less, Ce: 0.15% or less, and Nd:
0.15% or less.