Interpretation:The reason for the properties of all steels not being identical needs to be explained.
Concept Introduction:Alloy is defined as a substance made up of two or more elements. Steel is also an alloy that is composed of a variety of elements. Mainly steel is composed of carbon and iron. The different properties of steel include tensile strength, hardness, yield strength, toughness, corrosion, malleability, plasticity, etc.
Answer to Problem 51A
All steels are not identical and have a different compositions.
Explanation of Solution
There are different types of steel depending on the amount of carbon as well as other impurities present in it. Also, different alloying elements present in the steel change the properties of steel.
In steel, carbon content can range from 0.1 to 1.5%. Generally, steel with a carbon composition of 0.1-0.25% is used. Apart from carbon, other elements such as phosphorus, manganese, and sulfur are also present in the steel. These elements add to the strength and durability of steel.
There are four categories of steels based on their chemical composition:
- Carbon steels
- Alloy steels
- Stainless steels
- Tool steels
Thus, the reason why the properties of all steels are not identical is their different composition.
Chapter 7 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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