Microstructure and mechanical properties of STFA26 tube before and after service at high temperature

The base and weld metals of old STFA26 (Cr9Mo) seamless alloy steel tubes, which were put into service at 570°C for 16 000 h, are investigated experimentally. The mechanical properties of the base and weld metals of old and new tubes are also examined. The results show that the properties of the STF...

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Bibliographic Details
Published inThe International journal of pressure vessels and piping Vol. 76; no. 4; pp. 209 - 213
Main Authors Fang, Deming, Gao, Zhenliang, Zhang, Kangda
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.04.1999
Elsevier
Subjects
Applied sciences
Exact sciences and technology
Fractures
Furnace
Furnaces
High temperature properties
Mechanical engineering. Machine design
Mechanical properties
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metallographic microstructure
Metals. Metallurgy
Microhardness
Microstructure
Steel design
Steel tanks and pressure vessels; boiler manufacturing
STFA26 tube
Welds
Mechanical properties
STFA26 tube
Microstructure
Furnace
Microhardness
Steel-CrMo
Alloy steel
Oil industry
Tube
Welded joint
Refinery furnace
High temperature
Experimental study
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Summary:The base and weld metals of old STFA26 (Cr9Mo) seamless alloy steel tubes, which were put into service at 570°C for 16 000 h, are investigated experimentally. The mechanical properties of the base and weld metals of old and new tubes are also examined. The results show that the properties of the STFA26 alloy tubes scarcely have deterioration in long service at 570°C and the tubes can be used in the furnace in the following service.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0308-0161
1879-3541
DOI:10.1016/S0308-0161(98)00141-0