|Statement||W. J. Jackson.|
|Contributions||Climax Molybdenum Company.|
|The Physical Object|
|Number of Pages||60|
Alloy steel is a class of steel that, in addition to carbon, is alloyed with other elements, ranging from 1 wt.% to 50 wt.%, which are used to enhance the material’s various properties . These elements commonly include manganese, nickel, chromium, molybdenum, vanadium, silicon, and boron. Less common elements include aluminium, cobalt, copper, cerium, niobium, titanium, tungsten, tin, zinc, . The alloy is magnetic and has a coefficient of thermal expansion less than that of carbon steel. Heat Treatment. To obtain maximum softness, castings of type CA15 alloy may be annealed at °F (°C) minimum, usually to °F ( to °C), and slowly furnace cooled. Moly alloys have excellent strength and mechanical stability at high temperatures (up to °C). Their high ductility and toughness provide a greater tolerance for imperfections and brittle fracture than ceramics. The unique properties of molybdenum alloys are utilised in many applications: High temperature heating elements, radiation shields, extrusions, forging dies, etc;. The cobalt–nickel–chromium–molybdenum alloy (MPN) can be cast or forged. The mechanical properties of both alloys are almost the same as those of the cast cobalt–chromium–molybdenum alloy, but the former is inferior to the latter in wear resistance and corrosion resistance. The alloy has a high workability as the L stainless steel.
Molybdenum is silvery-white, very hard refractory metal, however, it is softer and more ductile than tungsten and is readily worked or drawn into very fine wire. Primary uses are as an alloying element, furnace electrodes, nuclear energy applications and filaments. Compounds have additional applicat. The Alloys The Ni-Resist cast irons are a family of alloys with sufficient nickel to produce an austenitic structure which has unique and superior properties. The family is divided into two groups. These are the standard or flake graphite alloys and the ductile or spheroidal graphite alloys. Except for the copper containing ones, the groups have. • high alloy stainless steel used in corrosion and heat resistant applications or low volume prototype and service parts. The balance of this chapter indicates chapters which will contain detailed information regarding the casting processes, applications for steel castings and suggestions regarding the use of steel castings. An Introduction to Chrome Moly Steel. Chromium molybdenum steel – often shortened to chrome moly – is a type of low alloy steel used in various industries and applications. And as the name suggests, the two main alloying elements are chromium (Cr) and molybdenum (Mo).
In this chapter, however, the term alloy steel is reserved for those steels that contain a modest amount of alloying elements and that usually depend on thermal treatment to develop specific properties. With proper heat treatment, for example, tensile strength of certain alloy steels can be raised from ab psi to nearly , psi. Fig 1 Iron molybdenum binary system. Mo is normally referred in short as ‘moly’. It has many important uses in alloy steels, stainless steels, alloy cast irons and super alloys. It is a powerful hardenability agent and is a constituent of many heat treatable alloy steels. Mo retards softening at higher temperatures. Aluminum Alloy Castings: Properties, Processes, and Applications Aluminum Alloy Castings provides property and performance data for all types of aluminum alloy castings and reviews and describes the factors that contribute to and affect those properties, including composition, microstructure, casting process, heat treatment, and quality assurance. Cast iron is an iron alloy containing 2 wt.% – 4 wt.% carbon, 1 wt.% – 3 wt.% silicon and smaller amounts of minor elements . In comparison, steel has a lower carbon content of up to 2 wt.% and a lower silicon content. Cast iron can also be further optimized by alloying with small quantities of manganese, molybdenum, cerium, nickel, copper, vanadium and titanium before being cast.