New Low Chromium Ferritic Pressure Vessel Steels

J. A. Todd, R. W. Swindeman, R. L. Klueh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Much progress has been made in developing chromium-molybdenum steels with improved hardenability, elevated temperature strength, toughness, and resistance to environment. The new low alloy steels, intended for heavy-wall pressure vessels operating at temperatures in excess of 450°C and pressures up to 30 MPa, are fully bainitic for maximum strength and toughness, and are resistant to temper embrittlement, hydrogen embrittlement, and hydrogen attack. Microstructural studies have shown that alloys containing 3%Cr and 1.5%Mo exhibit improved heat treating characteristics as they rapidly temper to produce stable alloy carbides, which are resistant to hydrogen attack. Such steels could replace 2.25Cr-lMo steel for service to 480°C. Higher creep strengths can be achieved in modifications of 2.25Cr-IMo or 3Cr-Mo steels containing up to 0.25% vanadium.

Original languageEnglish (US)
Title of host publicationMiCon 1986 - Optimization of Processing, Properties, and Service Performance Through Microstructural Control
EditorsBruce L. Bramfitt, Raymond C. Benn, Charles R. Brinkman, George F. Vander Voort
PublisherASTM International
Pages83-115
Number of pages33
ISBN (Electronic)9780803109858
DOIs
StatePublished - 1988
Event1986 Symposium on Optimization of Processing, Properties, and Service Performance Through Microstructural Control, MiCon 1986 - Philadelphia, United States
Duration: May 15 1986May 16 1986

Publication series

NameASTM Special Technical Publication
VolumeSTP 979
ISSN (Print)0066-0558

Conference

Conference1986 Symposium on Optimization of Processing, Properties, and Service Performance Through Microstructural Control, MiCon 1986
Country/TerritoryUnited States
CityPhiladelphia
Period5/15/865/16/86

All Science Journal Classification (ASJC) codes

  • General Materials Science

Fingerprint

Dive into the research topics of 'New Low Chromium Ferritic Pressure Vessel Steels'. Together they form a unique fingerprint.

Cite this