Effects of Sigma and Chi Phases on the Localized Corrosion Resistance of SR50A Super Austenitic Stainless Steel

CORROSION ◽  
10.5006/0723 ◽  
2013 ◽  
Vol 69 (4) ◽  
pp. 364-371 ◽  
Author(s):  
J.K. Shin ◽  
H.J. Jang ◽  
K.W. Cho ◽  
C.J. Park
Alloy Digest ◽  
1995 ◽  
Vol 44 (4) ◽  

Abstract VLX 954 is an austenitic stainless steel with 6% (nominal) molybdenum. The alloy is particularly resistant to localized corrosion in sea water and chloride environments. This datasheet provides information on composition, physical properties, 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: SS-589. Producer or source: DMV Stainless USA Inc.


Alloy Digest ◽  
2012 ◽  
Vol 61 (7) ◽  

Abstract Uranus 4565 is a high N super austenitic stainless steel with a Pitting Resistance Equivalent Number (PREN) >45. This datasheet provides information on composition, physical properties, elasticity, tensile properties, and shear strength as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1124. Producer or source: Industeel USA, LLC.


Alloy Digest ◽  
2010 ◽  
Vol 59 (6) ◽  

Abstract NAS 354N is a super austenitic stainless steel with very high molybdenum for pitting and crevice corrosion resistance and high enough nickel content for good resistance to stress-corrosion cracking. 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: SS-1066. Producer or source: Nippon Yakin Kogyo Company Ltd.


Alloy Digest ◽  
2019 ◽  
Vol 68 (12) ◽  

Abstract UR 367 is a 6% Mo high-performance, super austenitic, stainless steel with a pitting resistance equivalent number (PREN) ≥ 43. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, machining, and joining. Filing Code: SS-1311. Producer or source: Industeel USA, LLC.


2015 ◽  
Vol 9 (11) ◽  
pp. 119 ◽  
Author(s):  
W. A. Ghanem ◽  
W. A. Hussein ◽  
S. N. Saeed ◽  
S. M. Bader ◽  
R. M. Abou Shahba

The effect of partial replacement of nickel with nitrogen on the corrosion resistance of newly designed austenitic stainless steel samples without and with heat treated was investigated in 3.5wt% and 5wt% NaCl solution using open-circuit, potentiodynamic, cyclic anodic polarization and electrochemical impedance spectroscopy techniques. The results showed that, passivation in sample 1 where the highest addition of nickel and low addition of nitrogen is different from that for sample 4 where the nitrogen is greatest and the nickel is reduced almost to the third comparing sample 1. The difference in responses of heat treated samples to localized and general corrosion could be attributed to the difference in their phase compositions. The appearance of ferrite phase for samples (2, 4, 5 and 6) after heat treatment resulted in lowering the general and localized corrosion resistance than as forged samples in contrast with samples 1 and 3, where they still pure austenite. The obtained results are confirmed by surface examination.


Author(s):  
Lilian N. M. Braguin ◽  
Caio A. J. da Silva ◽  
Larissa O. Berbel ◽  
Isolda Costa ◽  
Mitiko Saiki

The ISO 5832-1 austenitic stainless steel used as biomaterial is largely applied in the area of orthopedics, especially in the manufacture of implants, such as temporary or permanent replacement of bone structures. The objective of this study was to evaluate the localized corrosion resistance of the ISO 5832-1 stainless steel used in orthopedic implants by electrochemical tests in two different solutions. The results of this study are of great interest to evaluate the corrosion of metallic implants that can result in the release of corrosion products into bodily fluids causing possible adverse biological reactions. The determination of the chemical elements in the composition of the ISO 5832-1 stainless steel was performed by neutron activation analysis (NAA). The samples for electrochemical tests were grinded with silicon carbide paper up to #4000 finishing, followed by mechanical polishing with diamond paste. The open circuit potential measurements and anodic polarization curves were obtained in solution of 0.90 wt. % of NaCl and of simulated body fluid (SBF). The results indicated that the ISO 5832-1 stainless steel presented a high resistance to crevice corrosion in simulated body fluid solution but high susceptibility to this form of corrosion in the chloride solution.  


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