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chemical composition of x70steel

(PDF) Effects of Microstructure on Corrosion of X70 Pipe

The test coupons were fabricated from a sheet of X70 pipe steel, supplied by Bao-Steel Co., China, with a chemical composition (wt.%):C 0.045,

API 5L X Grades:X52 X56 X60 X65 X70 Welded & Seamless

PSL 1 is a standard quality for line pipe where PSL 2 contains additional chemical, mechanical properties, and testing requirements. Grades covered by this specification are A25, A, B and "X" Grades X42, X46, X52, X56, X60, X65, X70, and X80. API 5L X70 PSL2, Grade x70 seamless pipe, L485 steel API 5L x70 material Chemical composition include C max 0.04-0.16, Si Max 0.55, Mn. Max 1.10-1.70, P max 0.035, S max 0.035. Max 1.10-1.70, P max 0.035, S max 0.035. API 5L x70 pipe for sale persists Mechanical properties Grade X70, Permissible yield point ratio 0.85, Yield Strength MPa(min) 480 and Tensile Strength MPa 600 750.

Alloy Steel Seamless Pipes/Tubes ASTM A335 P5, P9, P11

The pipe shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Grade P2 and P12 steel pipes shall be made by coarse-grain melting practice. The steel material shall conform to chemical composition, tensile property, and Carbon Steel API 5L GR.X70 Sheets and Plates, API 5L X70 API 5L X70 steel chemical composition%(PSL 1):C max 0.28 ,Mn max 1.40, P max 0.030, S max 0.030, Ni max 0.50, Gr max 0.50, Cu max 0.50, The sum of the Nb, V and Ti shall be 0.06%. API 5L X70 Yield Strength min 360MPa, Tensile strength min 460MPa. Specification:Standard:API :Specification:

Carbon Steel Line Pipe Grades and Chart Specifications

We at Ashapura Steel are manufacturer, exporter and supplier of a qualitative range of Carbon API 5L X70 PSL 1 Line Pipes and API 5L X70 PSL 2 Carbon Steel Line Pipes in Mumbai, India, that is being designed as per the national and international standard quality standards. These Carbon Steel API 5L X70 PSL 1 Seamless Pipes are manufactured with micro-alloyed steel using elements such as Niobium, ium Corrosion of API X70 Steel Due to Near Shore SedimentCOMPOSITION OF X70 STEEL Chemical Composition Percentage Fe 97.7 C 0.0784 Mn 1.67 P 0.0123 Co 0.0222 V 0.0114 Mo 0.0047 Ti 0.11 Al 0.0228 Nb 0.0036 Si 0.318 Cu 2 0.0087 Ni 2 0.0152 Cr 2 0.0275 Pb 0.0023 B. Experimental Site Three sea sites in state of Johor, Malaysia were chosen for the study namely DB, PJ and TR.

Effect of Acicular Ferrite and Bainite in API X70 Steel

Jul 18, 2020 · Table 1 Chemical composition of API X70 steel (wt%) Full size table. The heat treatment was carried out according to the niobium content in the steel, this element is of special interest because the dissolution and precipitation temperature is the Effect of Chemical Composition on Quenching Hardness of In order to find the reasons of that the hardness of 1Cr17Ni2 stainless steel partial components after being quenched is weakened, based on the sampling analysis on the partial components to produces the components to carry on the sampling analysis, and to compare the contrast that the maximum of the hardness of quenched material is lower than (the average value of the

Effects of Stray AC Interference on Corrosion Behavior of

The chemical composition of X70 steel is shown in Table 1. The mechanical properties of X70 at 25 oC are tensile strength of 610 PMa, and yield strength of 503 MPa. Two types of samples were used in this research, disk-shaped samples with an open surface area of 1 cm2 and strain stress samples shown in Figure 1(A). Investigation of Inhibition Properties of Sophorolipids The inhibiting effect of sophorolipids on the corrosion of X65 steel in the simulated oilfield produced water saturated with CO2 was investigated by weight-loss measurement, polarization, electrochemical impedance spectroscopy, and scanning electronic microscope analysis. Results demonstrated that sophorolipids showed good inhibition performance for X65 steel corrosion

L485MB StE480.7TM X70 Steel plate,L485MB StE480.7TM

X70 steel plate/pipes, API 5L X70 steel plate/pipes, under API 5L standard, we can regard X70 steel plate/pipes as large diameter pipes. X70 steel plate/pipes is one mainly of Steel for large diameter pipes,API-X70 steel with the demands in mechanical properties of the pipes followed the API specification for grade X70 (YS is 485MPa, TS is from 600-750 MPa).It is well known that Materials Free Full-Text Strengthening Effect of Nb on The test material is taken from an industrially produced X70 pipeline steel plate coil, and the thickness of the steel plate is 17.5 mm. The chemical composition of the material is (wt.%) 0.065 C, 0.20 Si, 1.55 Mn, 0.065 Nb, 0.016 P, and 0.0012 S.

Mechanical Properties of High-Nb X80 Steel Weld Pipes for

Sep 07, 2017 · The mechanical properties of steel pipe have great effects on the integrality and operation safety of gas transmission pipeline. In order to reduce the cost of the steel pipe, the high-Nb X80 pipeline steels with the different alloying systems have been used in the Second West-to-East Gas Transmission Pipeline Project. Nevertheless, an investigation into the effects of chemical composition 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.

PAPER OPEN ACCESS Mechanical Characterization of

chemical compositions of the X-grade steels are fairly simple, with maximum limits on C, Mn, S, P and other elements such as niobium and vanadium [4]. The variations in strength (e.g., between X70 and X80) do not result primarily from variations in alloy composition, but from variations in the processing route of the steel [4]. Pitting Initiation and Propagation of X70 Pipeline Steel EDS composition maps of the inclusions in X70 steel:(a) Type A; (b) Type B and (c) Type C. Materials 2017 , 10 , 1076 5 of 14 Table 3 shows the chemical composition of

Pressure on Metastable Pitting Corrosion of X70

Chemical composition of the X70 steel specimens (wt %). C Si Mn Cr Ni Ti V Nb Others Fe 0.066 0.29 1.39 0.032 0.20 0.015 0.037 0.056 0.300 Bal. Small specimens for potentiostatic and potentiodynamic polarization tests with 2 2 5 mm size were cut from the X70 plates. Synthesis and Anticorrosion for X70 Steel of Propynol technics. The results showed that M-n could efficiently protect X70 steel from corrosion with an efficiency of 99% at 40 µM and 60 µM in 5 M HCl solution. The inhibitory efficiency was almost unchanged at 30-60 µM for M-n at a concentration of 40 µM. Surface morphology analysis evidenced the protective film of M-n on X70 steel surface.

WYJ014-2004 X70 steel plate-S355J2,S35J2G3,S355JR,S235JR

WYJ014-2004 X70 steel plate According to the technical conditions of the supply of the chemical composition of the steel plate, including melting analysis and product analysis results should be consistent with the requirements of the table 3. 2.2 carbon equivalent.Grade X70 - an overview ScienceDirect TopicsSpecial treatment in the steelmaking shop and fulfillment of special requirements for chemical composition help prevent the formation of nucleation sites for hydrogen-induced cracking (HIC). Production trials show great potential for the development of higher grades, up to X80, for slightly sour conditions [3] .

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