Measurement of Residual Creep Deformation of Elements of High-Temperature, High-Chromium Steel Steam Pipes Without Using Reference Marks

2017 ◽  
Vol 51 (3) ◽  
pp. 336-340
Author(s):  
E. A. Grin’ ◽  
V. A. Sarkisyan
Alloy Digest ◽  
1969 ◽  
Vol 18 (8) ◽  

Abstract Firth Vickers F.I. 20 is a non-hardenable, ferritic high-chromium steel recommended for furnace parts, heat treating equipment, zinc die casting machine nozzles and other high temperature applications up to approximately 750 C. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-229. Producer or source: Firth-Vickers Stainless Steels Ltd.


2018 ◽  
Vol 284 ◽  
pp. 1157-1162
Author(s):  
Mikhail A. Filippov ◽  
N. Ozerets ◽  
S.M. Nikiforova ◽  
E. Smagireva

Ways to increase the abrasive wear resistance of high-chromium steel depending on changes in the temperature of heating for quenching and cold treatment are studied in this paper. It was found that during quenching from temperatures of 850-1000 °C, martensite is formed in the structure of steel H12МFL, which provides high hardness: however, maximum abrasion resistance is not achieved in conditions of abrasive wear. An increase in the heating temperature for quenching to 1170 °C leads to a decrease in the initial hardness, which is due to the dissolution of carbides and an increase in the amount of residual austenite, but this is accompanied by a significant increase in wear resistance in abrasive wear. Residual austenite, obtained as a result of high-temperature hardening (from 1170 °C), is metastable and, in the process of wear, becomes a deformation-induced martensite. This gives the steel maximum wear resistance due to its high frictional hardening ability. A further increase in the temperature of heating for quenching above 1170 °C is inexpedient, since it leads to grain growth. Additional possibilities for increasing abrasive wear resistance consist of the cold treatment of high-carbon steels because of an increase in the amount of cooled martensite and an increase in the initial hardness. Cold treatment of the test steel after high-temperature quenching with cooling to minus 70 °C for 20 min and low tempering at a temperature of 200 °C for 2 h allows for further increases to the abrasion resistance by 25% due to the formation of 15% high-carbon chromic martensite cooling and initial hardness up to 60 НRC, with the preservation of 20% of residual metastable austenite and carbides.


Alloy Digest ◽  
2004 ◽  
Vol 53 (2) ◽  

Abstract Nicrofer 3033 is a high-chromium austenitic material for service in hot mineral acids and mixed acids. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Ni-508. Producer or source: VDM Technologies Corporation. Originally published April 1996, revised February 2004. See also Alloy Digest SS-687, July 1997.


Alloy Digest ◽  
2000 ◽  
Vol 49 (7) ◽  

Abstract Nirosta 4465 is a low-carbon, high-chromium alloy with nickel and molybdenum. It has good corrosion and intergranular corrosion resistance. The alloy is used for processing phosphate rock. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-797. Producer or source: ThyssenKrupp Nirosta.


Alloy Digest ◽  
2002 ◽  
Vol 51 (6) ◽  

Abstract NIROSTA 4002 is an apparatus structural steel with 13% Cr. It is used for crack-resistant installations in the mineral oil industry because it has a high level of resistance against hydrogen and hydrogen sulfide. This chromium steel requires a smoothened surface free from residues in order to achieve optimal resistance to corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance as well as forming, heat treating, machining, and joining. Filing Code: SS-856. Producer or source: ThyssenKrupp Nirosta GmbH.


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