what differences between ferrous and non-ferrous metals?are they include in the precious metal?
The ferrous metals contain iron and non-ferrous metals do not. The ferrous metals and non-ferrous metals each have their own distinctive properties. These properties determine the applications they are most suited for. Ferrous Metals are magnetic and give little resistance to corrosion. Non-ferrous metals are not magnetic and are usually more resistant to corrosion than ferrous metals.Some common ferrous metals include alloy steel, carbon steel, cast iron and wrought iron. The common non-ferrous metals are aluminum & aluminum alloys, copper, brass, lead, and zinc.
In general, i agree with the answer of Dr. Saini. Just two more comments: First of all, that not all the ferrous metals are magnetic (for instance some types of stainless steels). Moreover, you can remember that the ferrous metal are those that contain iron, by thinking that the symbol of iron is Fe and therefore refers to the word ferrous.
Ferrous comes from the Latin word 'Ferrum' for Iron (symbol Fe). Ferrous metals contain iron and nonferrous do not contain iron. Please see (might be helpful):-
(1) please see the links if you have access: (a) https://www.slideshare.net/fjpwhelan/metals-ferrous-and-non-ferrous
(b) https://weldaloy.com/tool/a-laymans-guide-to-ferrous-and-nonferrous-metals/
(2) Wikipedia: (a) https://en.wikipedia.org/wiki/Ferrous (b) https://en.wikipedia.org/wiki/Non-ferrous_metal (c) https://en.wikipedia.org/wiki/Ferrous_metallurgy (d) https://en.wikipedia.org/wiki/Non-ferrous_extractive_metallurgy
(3) ASM Handbook Volume 02: Properties and Selection: Nonferrous Alloys and Special-Purpose Materials
(4) ASM Handbook, Volume 01 - Properties and Selection: Irons, Steels, and High-Performance Alloys
Best wishes
Dear Azlan Nazeri,
The terms ferrous and non-ferrous simply reflect the dominant position of steel, malleable and cast iron in comparison to non-ferrous metals, the latter category indeed including the precious metals. This dominant position can be given in terms of tons of yearly production (albeit in terms of volume production the proportions differ) as well in terms of variety of properties provided by the total range of ferrous alloys. Besides, modern steel is indeed a rather novel alloy. Note that the production route for aluminium did not change much since the 19th century, while modern steel is produced by methods developed since World War II and innovations are still on their way.
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