scholarly journals Effects of Alloying Elements and Microstructure on Corrosion Resistance and Hardness of Martensitic Stainless Steels

2000 ◽  
Vol 86 (2) ◽  
pp. 123-130 ◽  
Author(s):  
Koji TAKANO ◽  
Mizuo SAKAKIBARA ◽  
Takayoshi MATSUI ◽  
Setsuo TAKAKI
Alloy Digest ◽  
2009 ◽  
Vol 58 (5) ◽  

Abstract Crucible 174 SXR is a premium-quality precipitation-hardening stainless steel designed for use as rifle barrels. It is a modification of Crucible’s 17Cr-4Ni that offers substantially improved machinability without sacrificing toughness. Its excellent corrosion resistance approaches that of a 300 series austenitic stainless steel, while its high strength is characteristic of 400 series martensitic stainless steels. At similar hardness levels, Crucible 174 SXR offers greater toughness than either the 410 or 416 stainless steels which are commonly used for rifle barrels. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming and heat treating. Filing Code: SS-1034. Producer or source: Crucible Service Centers.


2006 ◽  
pp. 115-124

Abstract Martensitic stainless steels are essentially iron-chromium-carbon alloys that possess a body-centered tetragonal crystal structure (martensitic) in the hardened condition. Martensitic stainless steels are similar to plain carbon or low-alloy steels that are austenitized, hardened by quenching, and then tempered for increased ductility and toughness. This chapter provides a basic understanding of grade designations, properties, corrosion resistance, and general welding considerations of martensitic stainless steels. It also discusses the causes for hydrogen-induced cracking in martensitic stainless steels and describes sulfide stress corrosion resistance of type 410 weldments.


Author(s):  
Aezeden O. Mohamed

This paper examines misconceptions and misinterpretations concerning the common assertion in textbooks that stainless steels has excellent corrosion resistance due to the addition of alloying elements such as nickel (Ni), chromium (Cr), and molybdenum (Mo).A closer look at this claim reveals underlying assumptions that lead to this imprecise statement. Corrosion experiments have been established in a course in engineering materials that expose these assumptions.Following a discussion of the tests and their results, it is suggested that statements in textbooks that stainless steel has excellent corrosion resistance should be qualified. It is hoped that by bringing this shortcoming to the attention of engineering educators, the misconceptions and misinterpretations can be corrected.


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