Effects of H2s and pH on Tafel Slopes in Electrochemical Corrosion of High Strength Carbon Steel S-135 in Alkaline Brines

Abstract Sumitomo SM110XS is a low-alloy, high-strength carbon steel for use in oil country tubular goods as a material suitable for sour service. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and heat treating. Filing Code: CS-188. Producer or source: Nippon Steel and Sumitomo Metal Corporation.

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SAE 1053

Alloy Digest ◽

10.31399/asm.ad.cs0070 ◽

1977 ◽

Vol 26 (11) ◽

Keyword(s):

Corrosion Resistance ◽

Carbon Steel ◽

Physical Properties ◽

Tensile Properties ◽

Induction Hardening ◽

High Strength ◽

Heat Treating ◽

Agricultural Machinery ◽

Hand Tools ◽

Steel Mills

Abstract SAE 10053 is an oil or water-hardening machinery and tool steel for applications where a shallow-hardening steel of high strength with moderate toughness meets the requirements. It is commonly used for parts where induction hardening or austempering are employed. SAE 1053 is recommended for agricultural machinery and tools, hand tools, shafts, springs and heavy-machinery parts. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CS-70. Producer or source: Carbon steel mills.

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Exploitation Load Impact on Electrochemical Properties of Shipbuilding 7xxx Series Aluminum Alloy Joints Prepared with TIG and FSW Methods

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.236.53 ◽

2015 ◽

Vol 236 ◽

pp. 53-61

Author(s):

Wojciech Jurczak

Keyword(s):

Mechanical Properties ◽

Corrosion Potential ◽

Tensile Load ◽

Electrochemical Corrosion ◽

High Strength ◽

Shipbuilding Industry ◽

Friction Stir ◽

Superior Mechanical Properties ◽

Series Aluminum Alloy ◽

Joint Quality

The paper presents the results of investigations on mechanical properties and electrochemical potential distribution within arc welded (TIG) and friction stir welded (FSW) joints subjected to slow strain rate tests. The materials investigated were high-strength 7xxx series (7020 and its modification 7020M) aluminum alloys intended for shipbuilding. The objectives were joint quality assessment and comparison of the advantages of new FSW method with the traditional TIG methods commonly utilized in shipbuilding industry. Joint quality was evaluated based on mechanical investigations, hardness distribution tests and simultaneous electrochemical corrosion potential measurements at various locations within the welded joints.Initiation of corrosion processes on TIG and FSW joints was identified as a radical decrease in corrosion potential related to load followed by oxide layer cracking. Arc welded (TIG) joints of 7xxx series alloys undergo corrosion at lower values of tensile load applied as compared to the FSW joints. Superior mechanical properties and higher corrosion resistance of the FSW joints make this technology well-suited for joining high-strength 7xxx series alloys.

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Fiber element modeling of circular double-skin concrete-filled stainless-carbon steel tubular columns under axial load and bending

Advances in Structural Engineering ◽

10.1177/13694332211065187 ◽

2022 ◽

pp. 136943322110651

Author(s):

Mizan Ahmed ◽

Qing Quan Liang ◽

Ahmed Hamoda

Keyword(s):

Stainless Steel ◽

Carbon Steel ◽

High Performance ◽

Mechanical Performance ◽

Axial Strain ◽

High Strength ◽

Offshore Structures ◽

Numerical Results ◽

Beam Columns ◽

Double Skin

Circular concrete-filled double-skin steel tubular (CFDST) columns with external stainless-steel are high-performance composite columns that have potential applications in civil construction including the construction of offshore structures, bridge piers, and transmission towers. Reflecting the limited research performed on investigating their mechanical performance, this study develops a computationally efficient fiber model to simulate the responses of short and slender beam-columns accounting for the influences of material and geometric nonlinearities. Accurate material laws of stainless steel, carbon steel, and confined concrete are implemented in the mathematical modeling scheme developed. A new solution algorithm based on the Regula-Falsi method is developed to maintain the equilibrium condition. The independent test results of short and slender CFDST beam-column are utilized to validate the accuracy of the theoretical solutions. The influences of various column parameters are studied on the load-axial strain [Formula: see text] curves, load-lateral deflection [Formula: see text] curves, column strength curves, and interaction curves of CFDST columns. Design formulas are suggested for designing short and beam-columns and validated against the numerical results. The computational model is found to be capable of simulating the responses of CFDST short and slender columns reasonably well. Parametric studies show that the consideration of the concrete confinement is important for the accuracy of the prediction of their mechanical responses. Furthermore, high-strength concrete can be utilized to enhance their load-carrying capacity particularly for short and intermediate slender beam-columns. The strengths of CFDST columns computed by the suggested design model are in good agreement with the test and numerical results.

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