Title:
AUSTENITE STRUCTURE STAINLESS STEEL AVAILABLE FOR USE UNDER HIGH TEMPERATURE
Document Type and Number:
Japanese Patent JPS59190351
Kind Code:
A
Abstract:
Austenitic stainless steel alloys which have been found to exhibit improved high temperature stress rupture properties and consist essentially of (in wt.%): 12.5 to 14.5 Cr; 14.5 to 16.5 Ni; 1.5 to 2.5 Mo; 1.5 to 2.5 Mn; 0.1 to 0.4 Ti; 0.02 to 0.08 C; 0.5 to 1.0 Si; 0.01 maximum, N; 0.02 to 0.08 P; 0.002 to 0.008 B; 0.004-0.010 S; 0.02-0.05 Nb; 0.01-0.05 V; 0.005-0.02 Ta; 0.02-0.05 Al; 0.01-0.04 Cu: 0.02-0.05 Co; 0.03 maximum, As; 0.01 maximum, O; 0.01 maximum, Zr; and with the balance of the alloy being essentially iron. The carbon content of the alloy is adjusted such that wt.% Ti/(wt.% C + wt.% N) is between 4 and 6, and most preferably about 5. In addition the sum of the wt.% P + wt.% B + wt.% S is at least 0.03 wt.%. This alloy is believed to be particularly well suited for use as fast breeder reactor fuel element cladding.
Inventors:
JIERARUDO DEYUAN JIYONSON
ROJIYAA UEIN PAUERU
ROJIYAA UEIN PAUERU
Application Number:
JP23346983A
Publication Date:
October 29, 1984
Filing Date:
December 09, 1983
Export Citation:
Assignee:
WESTINGHOUSE ELECTRIC CORP
International Classes:
B21B3/02; C21D8/10; C22C38/00; C22C38/58; G21C3/07; (IPC1-7): B21B3/02; C21D8/10; C22C38/58; G21C3/06
Domestic Patent References:
| JPS56127756A | 1981-10-06 |
Attorney, Agent or Firm:
Koichiro Kato