Steel is an alloy of iron and carbon, along with small amounts of other metals like nickel, chromium, and molybdenum. There are several types of steel classified based on their metal content and percentages. These include high carbon steel, mild steel, medium carbon steel, stainless steel, high speed steel, cobalt steel, nickel chromium steel, aluminum steel, and chromium steel. Each type has different properties making it suitable for different applications like tools, vehicle frames, cutlery, and armor.

1. TYPES
OF
STEEL

2.  Steel is basically an alloy of iron and carbon
with a small percentage of other metals such
as nickel, chromium, aluminum, cobalt,
molybdenum, tungsten etc. Steel is a hard
ductile and malleable solid and is probably
the most solid material after plastic and iron.
 There are many different types of steel
classified on the basis of the type of metal
used and the percentage content of the
metal in the particular type of steel.

3. Types of steel
 High carbon steel
 Mild steel
 Medium carbon steel
 Stainless steel
 high steel
 Cobalt steel
 Nickel chromium
 Aluminium steel
 Chromium steel

4. High-Carbon Steel
 Simply composed of iron and carbon with a more percentage of
carbon in it than iron.
 The presence of excess carbon makes this type of steel is softer than
the other types of steel which contain some percentage of other
elements as well.
 Mostly used in the making of wood cutting tools because they can
be sharpened easily. However it cannot be used in the making of
tools used for the cutting of hard substances because it is not hard
enough for that purpose. It is also used in the making of axes, swords,
scissors and other cutting tools.
Mild carbon steel
 The mild carbon steel just like the high carbon steel is simply
composed of iron and carbon but it has a very low content of
carbon in it.
 This steel is used in the making of vehicle frames, panels, boxes, cases
and sheet metal for roofs. It is now also used as a replacement for
wrought iron in the making railroad rails.

6. Medium Carbon Steel
 The medium carbon steels have a normal content of carbon that
means that they are not as hard as the high carbon and neither are
they as strong the Mild carbon steel.
 They are used in the making of tool frames and springs.
Stainless Steel
 Stainless steel is the most resistant and commonly used steel of all the
types. It apart from carbon contains 11% chromium and some
amount of nickel. It is probably the most resistant steel of all the types.
 Although all the types of steel are generally resistant to rust and
corrosion, the stainless steel in particular is resistant to any sort of
external attack.
 This steel is used in the making of crockery, wrist watches, kitchen
utensils, cutlery and surgical equipments.

8. High Speed steel
 High speed steel is an alloy of steel which may consists of either of the
following metals: tungsten, cobalt, molybdenum or chromium.
 High speed steel is probably the toughest of all the types. The term
high speed is given to it due to the fact that it has the ability to cut
the metals.
 Used in the making of drills and tools and power saws.
 The hardness and rigidity of high speed steel depends on the metal
used in the making of the alloy and its percentage of composition in
it.
Cobalt Steel
 Cobalt is much like the high speed steel with an excess of cobalt
present in it.
 It might not be as hard as the high speed steel is but it too can drill
through certain types of metals. The drill tools made of cobalt steel
have a touch of brown color.

9. Nickel Chromium Steel
 Nickel chromium steel is has is a special type of steel which is shock
resistant apart from being strong therefore it is commonly used as
an armor plate.
Aluminum Steel
 Aluminum steel is smooth steel with a high content of aluminum.
Because of its strong and smooth surface it is used in the making of
furniture.
Chromium Steel
 Chromium steels have a high content of chromium and are resistant
to corrosion.
 They are very strong tensile and are elastic in nature. They are used
in the making of Automobile and airplane parts.