Title:
AUSTENITIC STAINLESS STEEL EXCELLENT IN ANTIBACTERIAL CHARACTERISTIC AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3232532
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an austenitic stainless steel having excellent antibacterial characteristic over a long period.
SOLUTION: This stainless steel has a composition containing ≤0.1% C, ≤2% Si, ≤5% Mn, 10-30% Cr, 5-15% Ni, and 1.0-5.0% Cu, and secondary phases composed essentially of Cu are dispersed by ≥0.2vol.% in a matrix. Further, this steel can contain one or ≥2 kinds among 0.02-1% Nb and/or Ti, ≤3% Mo, ≤1% Al, ≤1% Zr, ≤1% V, ≤0.05% B, and ≤0.05% rare earth elements. The secondary phases composed essentially of Cu can be finely and dispersedly precipitated in the matrix by applying heat treatment one or more times at 500-900°C.
Inventors:
Morihiro Hasegawa
Katsuhisa Miyakusu
Naoto Ohkubo
Sadayuki Nakamura
Katsuhisa Miyakusu
Naoto Ohkubo
Sadayuki Nakamura
Application Number:
JP35145095A
Publication Date:
November 26, 2001
Filing Date:
December 26, 1995
Export Citation:
Assignee:
Nisshin Steel Co., Ltd.
International Classes:
C22C38/00; C21D9/46; C22C38/58; (IPC1-7): C22C38/00; C21D9/46; C22C38/58
Domestic Patent References:
| JP617197A | ||||
| JP6134503A | ||||
| JP7188740A |
Attorney, Agent or Firm:
Wataru Ogura
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