Tungsten strengthened ferritic steels, 2.25Cr-1.6W-V-Nb and 12Cr-0.4Mo-2W-V-Nb-Cu have been developed and approved by the ASME Boiler and Pressure Vessels Code Committee for use in Section I construction, designated as T23 and T122 respectively. A field exposure test installing both steel tubes in service along with comparative materials in the tertiary superheater and secondary reheater of a 156MW utility power boiler has been conducted since April 1993. The tubes were removed to confirm their material properties and corrosion/steam oxidation behaviors after one-year, 3-year, 6-year and 10-year periods of service. The tensile and creep rupture strengths of both steels showed no remarkable change during service. Examination of steam oxidation scale on the inner surface of the tubes indicated that the scale growth rate of T122 was extremely small following one-year service. The growth rate and morphology of steam oxidation scale is discussed, as compared with conventional materials.
Skip Nav Destination
ASME/JSME 2004 Pressure Vessels and Piping Conference
July 25–29, 2004
San Diego, California, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4671-7
PROCEEDINGS PAPER
10-Year Experience With T23(2.25Cr-1.6W) and T122(12Cr-0.4Mo-2W) in a Power Boiler Available to Purchase
M. Igarashi
M. Igarashi
Sumitomo Metal Industries, Ltd.
Search for other works by this author on:
N. Komai
Mitsubishi Heavy Industries, Ltd.
F. Masuyama
Kyushu Institute of Technology
S. Yamamoto
Sumitomo Metal Industries, Ltd.
M. Igarashi
Sumitomo Metal Industries, Ltd.
Paper No:
PVP2004-2571, pp. 57-64; 8 pages
Published Online:
August 12, 2008
Citation
Komai, N, Masuyama, F, Yamamoto, S, & Igarashi, M. "10-Year Experience With T23(2.25Cr-1.6W) and T122(12Cr-0.4Mo-2W) in a Power Boiler." Proceedings of the ASME/JSME 2004 Pressure Vessels and Piping Conference. Experience With Creep-Strength Enhanced Ferritic Steels and New and Emerging Computational Methods. San Diego, California, USA. July 25–29, 2004. pp. 57-64. ASME. https://doi.org/10.1115/PVP2004-2571
Download citation file:
9
Views
Related Proceedings Papers
Related Articles
10-Year Experience With T23(2.25Cr-1.6W) and T122(12Cr-0.4Mo-2W) in a Power Boiler
J. Pressure Vessel Technol (May,2005)
The Creep and Stress-Rupture Testing of Steam-Boiler Materials
Trans. ASME (February,1952)
Stress-Rupture Properties of Some Chromium-Nickel Stainless-Steel Weld Deposits
Trans. ASME (October,1954)
Related Chapters
Scope of Section I, Organization, and Service Limits
Power Boilers: A Guide to the Section I of the ASME Boiler and Pressure Vessel Code, Second Edition
Basic Concepts
Design & Analysis of ASME Boiler and Pressure Vessel Components in the Creep Range
Lessons Learned: NRC Experience
Continuing and Changing Priorities of the ASME Boiler & Pressure Vessel Codes and Standards