White cast iron has
A
Carbon in the form of carbide
B
Low tensile strength
C
High compressive strength
D
All of these
Correct Answer: All of these
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.
