White cast iron has
A. Carbon in the form of carbide
B. Low tensile strength
C. High compressive strength
D. All of these
Answer: Option D
Solution(By Examveda Team)
When white iron is sheared, the fractured face appears white due to the absence of graphite.The cementite microcrystalline structure is hard and brittle with a high compressive strength and good wear resistance.
In certain specialized applications, it is desirable to have white iron on the surface of the product.
This can be achieved by using a good conductor of heat to make part of the mold.
This will draw heat out of the molten metal quickly from that specific area, while the rest of the casting cools at a slower rate.
This Question Belongs to Mechanical Engineering >> Engineering Materials
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Wrong answer
Ans is wrong
Right answer is A
But according to your question answer would be option A
B. High tensile strength
C. Low compressive strength
Then answer would be option D.
But here in your question options are given wrong.
Answer should be option A.
Because white cast iron has high tensile strength and low compressive strength.
Answer should be option D.
As phosphorus aids fusibility and fluidity in cast iron.