SP C5

Apa tu Ferrous Metals

Metals that contain Iron(Fe)

Apa itu non Ferrous metal?

Metal that not contain Iron(Fe)

Characteristics of FERROUS

Durable

Magnetic
Good conductor electricity

Characteristics of non FERROUS

Colorful

Non Magnetic
Great conductor electricity

Ferous metal terbahagi kepada 2

Iron + Steel

Iron

Basic component of steel

Apa itu Wrought iron + Cast Iron

Wrought (tempa) - IRON alloy with very low carbon content
Cast (tuang) - group of IRON CARBON alloy with carbon >2%

Steel

element of iron

Contoh non FERROUS metal?

Al , Zn , Cu, Tin

Ciri2 Al

Silver

Low melting point

Ciri2 Zn

blue-white
hard smooth material

Cu

Reddish
Bronze = Cu+Tin

Tin

silvery white

Low melting point

Definition Non Metallic Material

Substances that NOT CONDUCT HEAT OR ELECTRICITY

5 Jenis NON Metallic Material

Timber

Polymer

Ceramic

Semiconductor

Concrete

Definition and 2 Characteristics of TIMBER (3 Marks)

OLDEST structural material used by man

LIGHTNESS
REUSABILITY

Definition and 2 Characteristics of POLYMER (3 Marks)

substance contain high-molecular weight molecules, consisting of repeating unit which are bond to each other

LOW DENSITY
ECONOMICAL

Definition and 2 Characteristics of CERAMIC (3 Marks)

SOLID COMPOUNDS consist of metallic and non-metallic.

VERY BRITTLE

LOW ELECTRICAL CONDUCTIVITY

Definition and 2 Types of SEMICONDUCTOR (3 Marks)

Material with ELECTRICAL CONDUCTIVITY between an INSULATOR AND A CONDUCTOR

INTRINSIC SEMICONDUCTOR is a PURE SEMICONDUCTOR like Silicon and Germanium

EXTRINSIC SEMICONDUCTOR is DOPED WITH IMPURITIES to form N-TYPE AND P-TYPE

Definition and 2 Characteristics of /CONCRETE/ (3 Marks)

Composite material mainly of WATER, AGGREGATE AND CEMENT

Durability

Modulus of elasticity

Definition of ADVANCED MATERIALS

materials with engineered properties

created through the development of

specialized processing and synthesis technology

Definition and 2 Advantages of NANOMATERIAL (3 Marks)

materials possessing, at minimum, one external dimension measuring 1-100nm.

extremely small size
COST-EFFECTIVE

Definition and 2 Advantages of SUPER ALLOY

Alloys with exhibit excellent HIGH MECHANICAL STRENGTH and CREEP RESISTANCE AT HIGH TEMPERATURES

GOOD SURFACE STABILITY
really good mechanical strength

Definition and 2 Advantages of COMPOSITES (3 Marks)

are materials made from two or more metallic materials and/or non-metallic materials.

DURABLE

CORROSION RESISTANCE