Analysis of Tensile Properties of N80Q Steel and 80SH Steel

During heavy oil production, the performance of casing varies with temperature in the service environment. The tensile test of N80Q Steel and 80SH Steel were carried out to evaluate the mechanical properties during the service. The results indicated that the grain size of 80SH steel was relatively u...

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Bibliographic Details
Published inMaterials science forum Vol. 993; pp. 610 - 615
Main Authors Chen, Yang, Yang, Shang Yu, Wang, Hang, Han, Li Hong, Wei, Wen Lan, Luo, She Ji
Format Journal Article
LanguageEnglish
Published Pfaffikon Trans Tech Publications Ltd 01.05.2020
Subjects
Casing
Elongation
Grain boundaries
Grain size
High strength steels
Mechanical properties
Qualitative analysis
Steel
Steel pipes
Tensile properties
Tensile strength
Tensile tests
Casing Steel
Tensile Properties
Fatigue Performance
Thermal Recovery Well
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Summary:During heavy oil production, the performance of casing varies with temperature in the service environment. The tensile test of N80Q Steel and 80SH Steel were carried out to evaluate the mechanical properties during the service. The results indicated that the grain size of 80SH steel was relatively uniform and the grain boundary was relatively obvious compared with N80Q steel. A qualitative analysis was performance by relating the tensile properties with different temperature. The results showed that the yield strength, the tensile strength and elongation of N80Q and 80SH steels decreased with increasing temperature, but the degree of decline was limited. The observation of the tensile fracture revealed that the characteristics of the radiation zone of N80Q steel were obvious compared with 80SH steel at 20°C.
Bibliography:Selected, peer reviewed papers from the Chinese Materials Conference 2019 (CMC 2019), July 10-14, 2019, Sichuan, China
ISSN:0255-5476
1662-9752
1662-9752
DOI:10.4028/www.scientific.net/MSF.993.610