Q3/ list the main bearing metals and what are the properties should possess to use it?

1) List the name and the amount of all elements present in 9439 steel.

what does alloy's melting temperature will dictate?

1-Another word for non crystalline is In(1 Point)-Anisotropic-Isotropic-Polymorphic-Amorphous 2-In a ductile material, the voids grow fast in the neck area because L(1 Point)-material softens-Material hardens-Load reduces-stress state changes to triaxial loading     3-Martensite is: In(1 Point)-A combination of two phases-A single phase which has a BCC crystatstructureA compound which has a BCT crystal structure) A phase consisting of BCT crystal structure   4-the physical properties of materials depend(1 Point)The atomic bondingCrystal structureCrystal structure and atomic bondingstructure level

Instruction: Explain briefly the tempering process Of a metal.

Give a classification of materials based on (solid phase)

Q16) Aluminum alloys are used for making air plane parts. Identify the important advantage of using aluminum alloys in making air plane parts is a. They are brittle and has less toughness b. They have Low Melting Point c. They have high strength to weight ratio d. They are Refractory materials

What are the production process of steel and other similar products of steel. describe the process.

Which of the 2 is the nore desirable behaviour of a structure? A. Ductile B. Brittle