Civil Engineering - Building Materials - Discussion

What are the types of iron with its iron content?

What are their uses in practical scenario?

Carbon content is .1 to .25.

Wrought iron is an iron alloy with a very low carbon (0.04 to 0.08%) content in contrast to cast iron (2.1% to 4%).

What are the types of steels?

What do you means by wrought iron?

1) Cast iron:

It is an alloy of iron, carbon and silicon and it is hard and brittle. Carbon content may be within 1.7% to 3% and carbon may be present as free carbon or iron carbide Fe3C.

2) Wrought iron:

This is a very pure iron where the iron content is of the order of 99.5%. It is produced by re-melting pig iron and some small amount of silicon, sulphur, or phosphorus may be present. It is tough, malleable and ductile and can easily be forged or welded.

3) Steel:

Steel is basically an alloy of iron and carbon in which the carbon content can be less than 1.7% and carbon is present in the form of iron carbide to impart hardness and strength. Two main categories of steel are (a) Plain carbon steel and (b) alloy steel.

Wrought iron content in to cast know as slag building sheets.

This answer is wrong according to Wikipedia. The correct one is 0.08 % which isn't mentioned in the options.

Wrought iron is an iron alloy with a very low carbon (less than 0.08%) content in contrast to cast iron (2.1% to 4%), and has fibrous inclusions known as slag up to 2% by weight.

Wrought iron is iron contain low carbon. It can be easily molded.