Uses of some Important Metals and its Alloys

Permalloy is a nickel-iron magnetic alloy, with $80\raisebox{1ex}{$0$}\!\left/ \!\raisebox{-1ex}{$0$}\right.$ nickel and $20\raisebox{1ex}{$0$}\!\left/ \!\raisebox{-1ex}{$0$}\right.$ iron content, having very high magnetic permeability.

Which of the following are major constitutes of permalloy?

What are the major properties of permalloy?

Which of the following changes will observe during addition of Manganese to steel.

When Manganese is added to steel it improves strength and hardness of steel.

 Which of the following properties are affected due to addition of carbon and manganese to steel?

(i) tensile strength and yield property (ii) Ductility (iii) Welding (iv) Corrosion resistance

Which of the following nickel alloy is used in the manufacturing of aircraft engine exhaust collectors.

Which of the following substances are present in alloy of Inconel.

What is nickel alloy steel?

Nickel is a_____material(ductile/non-ductile)

Which of the following are examples of Permalloy and Mumetal.

Manganese steel is used for making railways because It is hard with a high percentage of $\mathrm{Mn}$.

What is necessary to be done before the nitriding process?

Nitriding not used for plain carbon steels because it forms_____(cracks/iron nitrides).

The required substance for the Nitriding process is_____(Nitralloy/Niobium).

What is Nitriding?

What is tempering process?

High temperature tempering develops a sorbite structure.

Which of the following tempering process is used to increase the endurance and elastic limit of the material?

At what temperature the temper embrittlement occurs?