What is an alloy? How is an alloy made? List two purposes of making alloys. Mention the constituents and two properties of each of the following alloys:
(i) Stainless steel
(ii) Brass
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An alloy is a homogenous mixture of two or more metals. It sometimes contains a non-metal component also.
It is made by heating the components in a definite proportion and then uniformly mixing them in the molten state and then cooling.
Two purposes of making alloys are:
(i) To make a substance resistant to corrosion
(ii) To make a substance strong and hard
Constituents of
Stainless steel: Iron, nickel, and chromium
Two properties of stainless steel are:
(i) It is resistant to corrosion.
(ii) It is more durable.
Constituents of
Brass: Copper and Zinc
Two properties of brass are:
(i) It is resistant to corrosion.
(ii) It is more malleable.
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Alloy is a substance in which many metals are added and made up of two or more chemical elements, of which at least one is a metal. An alloy has properties different from the metals it is made of.
Purpose of making alloy are
1. Enhance the hardness of a metal
2.so that you can change the physical properties of the base metal.
_________________________
Alloy is a substance in which many metals are added and made up of two or more chemical elements, of which at least one is a metal. An alloy has properties different from the metals it is made of.
Purpose of making alloy are
1. Enhance the hardness of a metal
2.so that you can change the physical properties of the base metal.
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