Question

What is stainless steel? How is stainless steel made? State an important property of stainless steel.

Answer 1

'Stainless' is a term coined early in the development of these steels for cutlery applications. It was adopted as a generic name for these steels and now covers a wide range of steel types and grades for corrosion or oxidation resistant applications.

Stainless steels are iron alloys with a minimum of 10.5% chromium. Other alloying elements are added to enhance their structure and properties such as formability, strength and cryogenic toughness. These include metals such as:

NickelMolybdenumTitaniumCopper

Non-metal additions are also made, the main ones being:

CarbonNitrogen

The main requirement for stainless steels is that they should be corrosion resistant for a specified application or environment. The selection of a particular "type" and "grade" of stainless steel must initially meet the corrosion resistance requirements. Additional mechanical or physical properties may also need to be considered to achieve .
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Answer 2

Hey there!


Stainless steel is obtained by combining carbon, chromium, and nickel in iron. The composition of various elements in stainless steel is:

Fe (83%) + C (1%) + Cr (15%) + Ni(1%)

Stainless steel has many advantages over iron. The most important is that unlike iron, it does not rust. Hence, it is widely used for making utensils, cutlery, surgical instruments, and ornamental articles. It is also stronger than iron.

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