STEEL , ALLOYS AND THEIR COMPARISON

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                                    STEEL , ALLOYS AND THEIR COMPARISON 


                                                             STEEL AND ALLOYS

                                             An alloy is a blend consisting of metal and other elements. Alloys are generally made for achieving properties like greater strength or resistance to corrosion. Steel is an alloy of iron. It mainly consists of iron with some small amounts of carbon.

Definition

ALLOY:      A homogeneous mixture of a metal with other types of elements

                        STEEL:      It is an alloy consisting of iron and carbon. It may also contain some other elements too apart from carbon and iron

                                             


                                                                           Example

                     ALLOY:        Brass (copper and zinc) and Bronze (copper and tin)

                     STEEL:          Stainless steel containing 0.4 percent carbon, 18 percent chromium, and 1 percent nickel

                                             


                                                                            Types

ALLOY:

  • Substitutional Alloy – some of the main metal atoms are substituted by other metal atoms of same size
  • Interstitial Alloy – some of the holes in the closed packed metal structure are occupied by small atom
STEEL:

  • Mild steel – it contains upto 0.25 percentage of carbon
  • Medium carbon steel – it contain 0.25 to 0.45 percentage of carbon
  • High carbon steel – it contain s 0.45 to 1.50 percentage of carbon
                                                       


                                                                   Naturally occurring

        ALLOY:    Most of the alloys are made artificially. However, some metals like electrum (alloy of gold and silver) occurs naturally

         STEEL:     No. Steel is made in the steel mills which are located in many parts of the world

                                            


                                                                          Uses/Importance

ALLOY:

  • Aluminum alloys are mainly used in the production of cars and engine components
  • Copper alloys are known for their thermal performance and high ductility.
  • Nickel alloys are known for their corrosion resistance and heat resistance
  • .Stainless Steel alloys are used in various commercial applications like cutlery, making tubes, etc.
  • Titanium alloys are known for their toughness and therefore are made for construction of aerospace structures
STEEL:

  • Steel ropes are used in suspension bridges.
  • Steel bars are usually used for various engineering purposes.
  • It is used in the production of gears, electrical motors, power generation related appliances, etc.
  • Modern buildings make use of steel, as it gives a range of versatility in designs
  •  It is also used in the production of hulls of ships.
  • Many domestic appliances are made of steel or are coated with steel
  • The bodies of cars are also made from cold reduced steel sheet
                                                   

REFERENCE:

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.jagranjosh.com%2Fgeneral-knowledge%2Fwhat-is-the-difference-between-steel-and-stainless-steel-1518080822-1&psig=AOvVaw0hO9Eq2T479JEkp6mzyf5O&ust=1599579757886000&source=images&cd=vfe&ved=2ahUKEwiTwKuLsdfrAhVhEbcAHS_yA1gQr4kDegQIARAw

 

https://www.google.com/url?sa=i&url=https%3A%2F%2Fmillenniumalloys.ca%2Fdifference-between-ferrous-non-ferrous-metals%2F&psig=AOvVaw0hO9Eq2T479JEkp6mzyf5O&ust=1599579757886000&source=images&cd=vfe&ved=0CAMQjB1qFwoTCODG5JCx1-sCFQAAAAAdAAAAABAq

 

https://www.google.com/url?sa=i&url=https%3A%2F%2Fnordholding.bg%2Fen%2Fnews-en%2Ftypes-non-ferrous-metals-recycle%2F&psig=AOvVaw0hO9Eq2T479JEkp6mzyf5O&ust=1599579757886000&source=images&cd=vfe&ved=0CAMQjB1qFwoTCODG5JCx1-sCFQAAAAAdAAAAABBH



                                                                                                                            -SUMAN

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