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What is an alloy? Explain the four purposes of alloying with suitable example

written 7.0 years ago by vibhavarikulkarni • 510

modified 4.7 years ago by sanketshingote • 100

advanced engineering chemistry

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written 6.9 years ago by vibhavarikulkarni • 510

modified 6.9 years ago by sanketshingote • 100

Alloy is a solid homogeneous mixture of two or more elements out of which one must be metal

Sr. No	Characteristic	Main metal	Alloying elements	Modification in properties of metal
1	Hardness	Pure Lead	0.5%Arsenic	Hardness of lead improves & it is used to make bullets
		Pure gold	copper	Ornament of gold are prepared as hardness of gold improves
		Pure Iron	Carbon (up to 1.5%)	Hardness,of iron improves,in the form of steel
		Pure copper	Tin &,zinc	alloy,is harder than pure copper
2	Tensile strength	Pure Iron	Carbon (1%)	Ten times increase in tensile strength of iron
3	Corrosion resistance	Pure iron	Chromium & Nickel	Alloy does not get corroded even in presence of acid & moisture
4	Cast ability	Pure lead	Tin, Antimony	Castability of this alloy,improves & hence it is used in making printing type

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