Q1: Stellite is a trade name for the

ANS:C - non-ferrous cast alloys.

Stellite is a trade name for non-ferrous cast alloys. Explanation:

1. Stellite: Stellite is a trademarked name for a group of non-ferrous alloys that contain cobalt (Co) as the primary metal along with varying proportions of other elements such as chromium (Cr), tungsten (W), and carbon (C). These alloys are known for their exceptional wear resistance, corrosion resistance, and high-temperature strength.
2. Composition: Stellite alloys typically consist of cobalt as the base metal, with additions of chromium, tungsten, and other elements to enhance specific properties. The precise composition of Stellite alloys may vary depending on the intended application and desired properties.
3. Applications: Stellite alloys are widely used in various industries, including aerospace, automotive, chemical processing, and tooling, where high wear resistance and durability are required. Common applications include cutting tools, valve seats, bearings, nozzles, and components for high-temperature and corrosive environments.
4. Trade Name: Stellite is a registered trademark owned by Kennametal Inc., a global supplier of tooling and industrial materials. The term "Stellite" is commonly used to refer to cobalt-based alloys with similar properties, even if they are not produced by Kennametal.
5. Other Options:
   • Cermets: Cermets are composite materials composed of ceramic (cer) and metallic (met) elements. They are typically produced by powder metallurgy techniques and are known for their hardness, wear resistance, and heat resistance. However, Stellite alloys are not classified as cermets.
   • Ferrous Cast Alloys: Ferrous cast alloys are alloys containing iron (Fe) as the primary metal. Stellite alloys, being cobalt-based, are non-ferrous alloys and do not contain iron as the primary metal.
   • Products Made by Powder Metallurgy Techniques: While Stellite alloys may contain some elements produced by powder metallurgy techniques, they are typically not considered products of powder metallurgy. Stellite alloys are more commonly produced using conventional casting or powder metallurgy techniques.