Bombay Coated And Special Steels Engineer 4 Interview Questions and Answers

Hardness is a measure of a material's resistance to deformation, scratching, or abrasion.

• Hardness is often measured using the Mohs scale for minerals or the Rockwell scale for metals.

• Materials with higher hardness values are more resistant to wear and scratching.

• Hardness can also affect a material's machinability and ability to be shaped or formed.

• Common examples of hard materials include diamonds, steel, and ceramics.

MEK is a solvent commonly used in industrial applications for tasks such as cleaning and degreasing.

• MEK stands for Methyl Ethyl Ketone

• It is commonly used as a solvent in industrial processes

• MEK is used for tasks such as cleaning, degreasing, and as a thinner in coatings

Hardness can be classified into different types such as Mohs, Vickers, Brinell, Rockwell, etc.

• Mohs scale is used for minerals, Vickers and Brinell are used for metals, Rockwell is used for metals and plastics

• Mohs scale ranges from 1 (softest) to 10 (hardest), Vickers and Brinell measure hardness by indenting the material with a specific force, Rockwell measures hardness by the depth of penetration