Question

Pure iron is soft, making it malleable and ductile. Steel is hard and tough, making it difficult to mould. Explain.

Answer 1

Hint: As we know, iron simply means that, chemically pure iron. Without carbon, iron is really soft and ductile. Iron becomes softer after heating. Steel is an alloy of iron and carbon. The amount of carbon directs whether a steel is hard or it is extreme. Adding Carbon makes the iron harder. The more carbon the harder the steel.

Complete answer:
Pure iron is brilliant white shaded metal and is incredibly lustrous. Its most significant property is that it is extremely soft. It is anything but difficult to work and shape and it is sufficiently delicate to slice through (with a lot of trouble) utilizing a blade. Pure iron can be hammered into sheets and brought into wires. It conducts heat and electricity and is exceptionally simple to magnetize. Its different properties include simple corrosion for the presence of moist air and high temperatures.
Steel is an extreme alloy of iron and carbon with admixtures of different components, including silicon, manganese, vanadium, niobium, and so on different alloying procedures can help produce steels with totally various properties.
Subsequently, a high-carbon steel is an iron alloy with a high carbon content. It is extreme, generally inexpensive, strong and useful for metalworking. A few downsides incorporate poor hardening and low heat obstruction, which make high-carbon steel touchy to corrosive conditions.
As a matter of fact "pure iron", however a lot stronger than copper or aluminum, is a genuinely delicate and malleable metal. Nonetheless, we generally use carbon to chemically reduce it from its local oxide to metallic iron, thus there is consistently at any rate a small leftover carbon content left in it. What we call "steel" is essentially "iron with carbon" where we eliminate the excess carbon and cautiously control how much carbon is left in it. This largely decides the properties of the resulting steel.

Note: Pure iron is delicate, making it malleable and ductile. To make it hard and extreme carbon is added. Expansion of carbon in iron makes steel. As a result, carbon steel is hard and extreme, making it hard to mould them.