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API 5L Grade X70 Pipe Data Sheet - Steel Pipe, OCTG

Mechanical Properties for API 5L X70 PSL1 pipe Pipe grade Pipe body of seamless and welded pipes Weld seam of EW, LW, Yield strength a Tensile strength a Elongation SAW and COW pipes (on 50 mm or 2 in) Tensile strength b Rt0.5 Rm Af Rm MPa (psi) MPa (psi) % MPa (psi) minimum minimum minimum minimum L485 or X70 485 (70 300) 570 (82 700) c 570 (82 700) a. API 5L X70|X70 STEEL PLATE__Steel SupplierFor more information of API 5L X70 steel plates, please check them in following:The minimum elongation in 2 in. (50.8 mm) shall be that determined by the following equation:U.S.Customary Unit Equation:e= 625,000* A0.2/U0.9; SI Unit Equation:e= 1,944 A0.2/U0.9. Where e = minimum elongation in 2 in. (50.8 mm) in percent rounded to the nearest

Correlation of microstructure and fracture properties of

Since the steel specimens fabricated specimens with an FCT of 400 °C to 550 °C, and is almost in this study exhibit yield strengths exceeding 483 MPa, all on the same level in the steel A and B specimens. The steel satisfy the strength requirement of X70 grade pipeline steels. Effects of Heat Treatment Process on Mechanical Properties Effects of heat treatment process of quenching and tempering under different temperature conditions on mechanical properties of X70 grade pipeline steel bends were studied. Brinell hardness, yield strength, tensile strength, elongation and impact absorbing energy of the bends were tested by using hardness tester, cupping machine and impact testing machine, respectively. Microstructure and Mechanical Properties of Two Api by Brazilian steel plants. The API 5L X60 and X70 grade steels were analyzed and compared in terms of microstructure and mechanical properties. The objective of this study was to verify the safely replacement of an old steel (X60) by a modern steel (X70) in a recently designed transport line of iron ore. 2. Materials and Experimental Procedures

Microstructure and Mechanical Properties of X70 Pipeline

The microstructure of X70 pipeline steel was studied by the analysis of OM, SEM and TEM. The precipitation behavior was discussed. The comprehensive mechanical properties, HIC and SCC performance were systematically studied. The results indicated that the microstructure of the experimental steel was mainly acicular ferrite and granular bainite. Microstructure and Properties of Low Manganese API X70 The microstructure of thermomechanically processed X70 pipeline steel primarily consisted of acicular ferrite (AF) together with small fraction of polygonal ferrite(PF), degenerated pearlite (DP) and martensite/austenite (M/A) constituent. The AF predominant microstructure is fine, homogeneous and free of band structure of hard phase. Post-Weld Heat Treatment of API 5L X70 High Strength Low High Strength Low Alloy (HSLA) steels are the materials of choice in pipeline construction with the API X70 grade as the steel for the majority of pipeline networks constructed during the late 20th and early this century. This paper reports on the influence of Post-Weld Heat Treatment (PWHT) on the reduction of residual stresses, resulting changes in the microstructure, and mechanical properties of a multi-pass, X70 HSLA steel,

Post-Weld Heat Treatment of API 5L X70 High Strength Low

In spite of a large body of work on the effects of PWHT operation on the microstructure and mechanical properties of a wide range of HSLA steels and welding processes combination, to the best of authors knowledge, there are limited studies on the PWHT of combined MSAW-FCAW multi-pass welding of X70 HSLA steel so far. The X70 steel is widely The effect of chemical composition on microstructure Heat-Affected Zone in X70 Steels. ZHIXIONG ZHU, LENKA KUZMIKOVA, HUIJUN LI, and FRANK BARBARO The current study investigates the eect of dierent levels of Ti, N, and Ti/N ratios on microstructure and properties in the intercritically reheated coarse-grained heat-aected zone (ICCGHAZ) of two-pass submerged arc welds in API 5L grade X70 Grade X70 - an overview ScienceDirect TopicsDevelopments in linepipe steel metallurgy have kept pace with requirements for increased pipe strength and diameter so that HAZ hydrogen cracking is not a major problem even in X70 grade pipelines, although experience beyond this strength level is still fairly limited (Ref 1, 2). However, high strength pipeline fittings, such as bends, tees, flanges, etc have not benefited from the same improvements in