Match each material in the above list for each of the following applications (ea

Question

Match each material in the above list for each of the following applications (each material should be selected and can only be selected once), and cite at least one reason for your choices: A base for a milling machine Automobile axle shaft Airframe of a commercial passenger airplane High-strength prosthetic implants Bent anchor bolts embedded in concrete High-temperature heating elements for a very large furnace to be used in oxidizing atmospheres Gas turbine blade Metal Stamping die Non-consumable electrode used in arc welding Center electrode used in long-life (>100,000 miles) spark plugs (k) Hammers and chisels Conductor in the home electrical wiring cable

Explanation / Answer

a)plain carbon steel-This material has great strength and hardness

b)4140 steel-It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.

c)Al-light weight and good mechanical strength.

d)Ni base super alloy- Creep and oxidation resistance are the reasons.

e)stainles steel-good corrosion resistance.

f)1080 steel

g)Ti-6Al-4V-Good surface wear properties.

h)D2 tool steel-It has high wear and abrasion resistant .

i)tungsten-highest melting point metal.

j)platinum-because it doesnot oxidise at high temperature.

k)grey cast iron.

l)copper -good conductivity.

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