3. WHAT IS METAL?
• A Metal is a material that is typically hard,
opaque, shiny, and has Good electrical and
Thermal conductivity.
4. PROPERTIES OF METAL
• Hard
• High Density
• High Tensile Strength
• High Melting point and boiling point
• Good Conductors of Heat and Electricity.
• Most metals are also solid at room temperature, but
one Metal i.e. Mercury (hg) is liquid at room
temperature.
6. FERROUS METAL
• The metals in which iron is the principal
element is known as Ferrous Metal. These are
directly attracted by magnets.
• Eg : Cast iron ,wrought iron ,steel etc.
7. NON-FERROUS METAL
• The metals which does not contain iron is
called Non-Ferrous Metals.
• Eg : copper, Aluminium ,Tin ,Lead.
8. • Both ferrous and non-ferrous metals are divided into
PURE METALS and ALLOYS.
• A PURE METAL is an element - eg iron, copper, gold -
unalloyed with another substance.
• An ALLOY is a mixture of two or more elements to
make another metal with particular properties.
9. TYPES OF METAL
FERROUS METAL NON FERROUS METAL
1. STEEL 1. ALUMINIUM
2. MILD STEEL 2. COPPER
3. STAINLESS STEEL 3. BRASS
4. IRON 4. LEAD
5. CAST IRON 5. ZINC
6. WROUGHT IRON 6. TIN
7. TITANIUM
11. ALUMINIUM
• Aluminium is a silvery-white metal.
• One surprising fact about Aluminium is that it’s the
most wide spread metal on Earth making up more
than 8% of the Earth’s core mass.
13. USES OF ALUMINIUM:-
• In Packaging of cans, foil, frame of etc.
• Food and beverage containers, because of its
resistance to corrosion.
• In Construction of windows, doors, sliding, building
wire, roofing, etc.
• A wide range of household items, from cooking
utensils.
• Powdered Aluminium is used in Paint.
• Street Lighting Poles.
17. ADVANTAGES OF ALUMINIUM :-
• Low maintenance
• Recyclable
• Can be formed into variety shapes
• Light weight
• Excellent corrosion resistance
• Easy surface treatment
• Easy to work
18. DISADVANTAGE OF ALUMINIUM :-
• Unable to support structure
• Lower melting point
• Costly
19. COPPER
• It is a soft, malleable and ductile metal with very
high thermal and electrical conductivity.
• A freshly exposed surface of pure copper has a
reddish-orange colour.
• Copper is found as a pure metal in nature.
• The first metal to be purposefully alloyed with
another metal, and is mix with ’TIN’ to
create ’BRONZE’.
20. PROPERTIES OF COPPER
• A good electrical conductor
• A good thermal conductor
• Corrosion resistant
• Easily joined
• Ductile
• Tough
• Non magnetic
• Attractive colour
• Easy to alloy
• Recyclable
• Catalytic
21. USES OF COPPER
• Wire and Cable
• Electronics
• Electric motors
• Architecture
• Antimicrobial applications
• Copper alloys are used in musical instruments
23. ADVANTAGE OF COPPER
• It stretches thus can be easily shaped and molded.
• It is corrosion-resistant.
• It is a good thermal and electrical conductor
• It has a high melting point thus can be used in high
temperature processes.
24. DISADVANTAGE OF COPPER
• It is easily scratched
• Easily loses its color due to heating
• It is costly
25. ZINC
• Zinc is a bluish-white lustrous diamagnetic
metal though most common commercial grades of
the metal have a dull finish.
• The surface of the pure metal tranishes quickly,
eventually forming a protective layer of the
basic zinc-carbonate, by reaction with atmospheric
Carbon-dioxide, This layer helps prevent further
reaction with air and water.
26. PROPERTIES OF ZINC
• Lustrous Metal
• Conductor of Electricity
• High Melting Point
• Malleable
• Thermal Conductivity
27. USES OF ZINC
• Zinc is used to galvanise other metals, such as iron,
to prevent rusting.
• Galvanised steel is used for car bodies, street lamp
posts, safety barriers and suspension bridges.
• Zinc oxide is widely used in the manufacture of very
many products such as paints, rubber, cosmetics,
pharmaceuticals, plastics, inks, soaps, batteries,
textiles and electrical equipment.
• Zinc sulfide is used in making luminous paints,
fluorescent lights and x-ray screens.
28. ADVANTAGE OF ZINC
• Good Strength
• Low Cost
• Long Shelf Life
• High Energy Density
30. BRASS
• Brass is a metal alloy made of ‘Copper and Zinc’, the
proportions of zinc and copper can be varied to
create a range of brasses with varying properties.
• Brass has higher malleability than bronze or zinc.
• By varying the proportions of copper and zinc, the
properties of the brass can be changed, allowing
hard and soft brasses.
• Today, almost 90% of all brass alloys are recycled.
Because brass is not ferromagnetic.
31. PROPERTIES OF BRASS
• Higher Malleability
• Low melting point
• Brass can be Hard and Soft
32. USES OF BRASS
• Brass is used for decoration for its bright gold-
like appearance; for applications where
low friction is required such as locks, gears,
bearings, doorknobs, ammunition casings and
valves; for plumbing and electrical
applications.
36. LEAD
• It is a soft, malleable and heavy metal. Freshly cut,
solid lead has a bluish-white colour that
soon tarnishes to a dull grayish colour when exposed
to air; the liquid metal has shiny chrome-silver
luster.
• Lead is a bright silvery metal with a very slight shade
of blue in a dry atmosphere. It tarnishes on contact
with air, forming a complex mixture of compounds
whose colour and composition depend on conditions
37. • Lead's characteristic properties include
high density, softness, ductility, malleability,
poor electrical conductivity compared to other
metals, high resistance to corrosion, and ability
to react with organic chemicals.
38. USES OF LEAD
• In Battery
• In Roofing and Cladding
• Lead pipes used at chemical factories
• Lead Bullets , etc.
41. TIN
• The stable allotrope is β-tin, a silvery-
white, malleable metal, but at low temperatures it
transforms into the less dense grey α-tin, which has
the diamond cubic structure. Metallic tin is not
easily oxidized in air.
• The first alloy used on a large scale was bronze, made
of tin and copper.
• large application for tin is corrosion-resistant tin
plating of steel. Inorganic tin compounds are rather
non-toxic. Because of its low toxicity, tin-plated metal
was used for food packaging as tin cans.
42. PROPERTIES OF TIN :-
• Tin is a soft,
• Malleable
• Ductile
• Highly crystalline silvery-white metal,
• Low melting point.
• Tin resists corrosion from water
44. TITANIUM
• It is a lustrous metal with a silver colour, low
density and high strength. It is highly resistant
to corrosion in water.
• It is found in almost all living things, rocks,
water bodies, and soils.
• In its unalloyed condition, titanium is as
strong as some steels.
45. PROPERTIES OF TITANIUM :-
• It has high strength
• Strong metal
• Low density
• Ductile
• Lustrous and metallic-white in colour
• High melting point
46. ADVANTAGE OF TITANIUM :-
• Corrosion resistance
• Good Strength
• Very Thin
• Hard
• Smooth Surface
49. STEEL
• Steel is a mixture of several metals but most of it
is iron.
• Steel is harder and stronger than iron.
• Smaller proportion of impurities.
• E.g. carbon, phosphorous, sulphur
• Durable material.
50. PROPERTIES OF STEEL :-
• High Melting point
• High thermal expansion
• High density metal
• Heavy weight
• Rough surface area
• Malleable
• Durable
51. USES OF STEEL :-
• Tools
• Machines
• Motors and engines
• Wires
• Foundation of construction
• Piling
• Beams and Columns
• Reinforced concrete
• High-rise building
• Infrastructure
• Scaffolding
52. ADVANTAGES OF STEEL :-
• Strong building material for superstructure
• Hard
• High melting point
• Recyclable
• Durability
• High performance
53. DISADVANTAGES OF STEEL :-
• Bad insulator
• Corrosion
• High cost transportation
• High expansion rate in changing
temperature
• Low resistance to fire
• Time consuming in terms of
construction
54. PROPERTIES OF MILD STEEL
• Hard
• High Tensile Strength
• Elongation at Break
• Malleable when Heated
55. USES OF MILD STEEL
• Used as Reinforcement in R.C.C.
• In Roofing
• Used as Rolled Structural Section like I –
section
• In manufacturing of Tools
56. STAINLESS STEEL
• stainless steel, also known as inox steel. It is
a steel alloy with a minimum of 10.5% chromium
content by mass.
• Stainless steel does not readily corrode, rust or stain
with water.
• There are different grades and surface finishes of
stainless steel to suit the environment the alloy must
endure.
57. IRON
• Iron is a chemical element with symbol Fe.
• The most common element on Earth.