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Title: Improved austenitic stainless steel for high temperature applications. [Improved stress-rupture properties]

Abstract

This invention describes a composition for an austenitic stainless steel which has been found to exhibit improved high temperature stress rupture properties. The composition of this alloy is about (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; .01-.05 V; 0.005-0.02 Ta; 0.02-0.05 Al; 0.01-0.04 Cu; 0.02-0.05 Co; .03 maximum, As; 0.01 maximum, 0; 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.

OSTI Identifier:
5274148
Application Number:
ON: DE84006161
Assignee:
EDB-84-036637
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; LMFBR TYPE REACTORS; REACTOR MATERIALS; STAINLESS STEELS; CHEMICAL COMPOSITION; FRACTURE PROPERTIES; BORON ADDITIONS; FUEL CANS; PHOSPHORUS ADDITIONS; RUPTURES; SULFUR ADDITIONS; ALLOYS; BORON ALLOYS; BREEDER REACTORS; CHROMIUM ALLOYS; CORROSION RESISTANT ALLOYS; EPITHERMAL REACTORS; FAILURES; FAST REACTORS; FBR TYPE REACTORS; IRON ALLOYS; IRON BASE ALLOYS; LIQUID METAL COOLED REACTORS; MATERIALS; MECHANICAL PROPERTIES; REACTORS; STEELS; 360103* - Metals & Alloys- Mechanical Properties; 210500 - Power Reactors, Breeding

Citation Formats

Not Available. Improved austenitic stainless steel for high temperature applications. [Improved stress-rupture properties]. United States: N. p., Web.
Not Available. Improved austenitic stainless steel for high temperature applications. [Improved stress-rupture properties]. United States.
Not Available. . "Improved austenitic stainless steel for high temperature applications. [Improved stress-rupture properties]". United States.
@article{osti_5274148,
title = {Improved austenitic stainless steel for high temperature applications. [Improved stress-rupture properties]},
author = {Not Available},
abstractNote = {This invention describes a composition for an austenitic stainless steel which has been found to exhibit improved high temperature stress rupture properties. The composition of this alloy is about (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; .01-.05 V; 0.005-0.02 Ta; 0.02-0.05 Al; 0.01-0.04 Cu; 0.02-0.05 Co; .03 maximum, As; 0.01 maximum, 0; 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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {},
month = {}
}