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Title:
MANUFACTURE OF STAINLESS STEEL TUBE OF MARTENSITIC SINGLE PHASE
Document Type and Number:
Japanese Patent JPH10287924
Kind Code:
A
Abstract:

To manufacture a stainless steel tube of martensitic single phase, by means of water quenching without causing quenching crack.

A steel, having a chemical composition containing, by weight, ≤0.2% C, ≤5.0% Mn, 7.0-15.0% Cr, and ≤8.0% Ni, is used. Further, the wall thickness t (mm) and respective contents of C and Cr in the steel satisfy the relation of inequality t (m) ≤ exp [5.21-18.1C (%)-0.0407Cr(%)]. Moreover, water quenching is performed at the time of heat treatment after tube making.


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Inventors:
AMAYA TAKASHI
UEDA MASAKATSU
KONDO KUNIO
Application Number:
JP9859397A
Publication Date:
October 27, 1998
Filing Date:
April 16, 1997
Export Citation:
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Assignee:
SUMITOMO METAL IND
International Classes:
C21D6/00; C21D8/10; C21D9/08; C22C38/00; C22C38/40; C22C38/58; (IPC1-7): C21D9/08
Attorney, Agent or Firm:
Terutaka Hogami (1 person outside)



 
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