WARNING! This member has not been verified For safe transactions it is advisable to meet face to face with suppliers to avoid fraud or You can use Rekber Goodloh For Secure and Convenient transactions.
Material is anything that has mass and occupies space. Based on the understanding that the technical material is the material used to construct an object and used for engineering and design in engineering.
A.1 Classification of Material
Based on the source material is divided into two kinds:
Organic material
Organic material is sourced from natural materials such as living organisms and can be used directly without going through the process. Examples: wood, natural rubber, and coal.
Inorganic materials
Inorganic material is a material that is sourced from nature in addition to living things and to get them to be processed first.
Inorganic Materials differentiated into two kinds:
Metal
Metal is a material that has high electrical conductivity with good conductor properties and resistance to high temperatures, has a high boiling point, hard, glossy, opaque, and deformable.
Metals consist of:
Ferro
Ferrous metals are metals with a major constituent element is Fe (iron). Ferrous metals are divided into:
1) Steel
Steel is a metal with its major constituent element is Fe (iron) and C (carbon) with a carbon content between 0.02% to 2.1%. This steel consists of:
a) Carbon Steel (Carbon Steel), consisting of:
Low Carbon Steel (Low Carbon Steel), with a carbon content of 0.02% ≤ C ≤ 0.2%.
Example: plates and spikes.
Medium Carbon Steel (Medium Carbon Steel), with a carbon content of 0.2% <C ≤ 0.5%.
Example: The gears and shafts.
High Carbon Steel (High Carbon Steel), with a carbon content of 0.5% <C ≤ 2.1%.
Example: spiral, string, and wrought mold.
b) Steel Alloys (Alloy Steel)
Steel alloy steel is obtained from the integration of two or more elements to obtain certain desired mechanical properties, alloy steel is divided into:
based alloys
Low Alloy Steel (Low Alloy Steel), alloy content ≤ 8%.
High Alloy Steel (High Alloy Steel), alloy levels> 8%.
Example: stainless steel (Stain Less Steel), tool steel and abrasion resistant steel,
Based on usability:
Stainless steel
With the addition of Cr
Example: Stainless steel
Wear-resistant steel
With the addition of Mn
Example: Nail excavators
High temperature resistant steel
With the addition of Mo and W
Examples: turbine blade
tool steel
With the addition of Mo and V
Example: Sculpture carbide
2) Cast Iron (Cast Iron)
Cast iron is a metal with constituent elements are Fe and graphite carbon content between 2.1% to 6.67%.
Based on the cast iron manufacturing process is divided into:
a) Iron Castings White (White Cast Iron)
White cast iron is a cast iron that does not have graphite with α + Fe3C phase. Obtained by rapid cooling, so many contain Fe3C. This causes the white cast iron is hard and brittle with% Si <1 ..
b) Cast Iron Gray (Gray Cast Iron)
Gray cast iron is a cast iron with flake-shaped graphite shape formed from decomposed Fe3C, is capable of reducing vibration, and has a high compressive strength. Its formation is equal to white cast iron, the difference lies in the cooling rate.
Example: the construction of a sewing machine, engine blocks, decorative lighting, and lathes.
Based divided into two phases, namely:
Gray Cast Iron Fireplace White (Ferritic) berfasa α.
Formed by slow cooling.
Gray Cast Iron Fireplace Black (Pearlitic) Berfasa α + Fe3C. Formed with normal cooling
c) Nodular Cast Iron (Nodular Cast Iron)
Shape spherical graphite, manufacture by means of cast iron is heated and then added Mg (Nokulen) and will form air bubbles that will be filled by carbon and have high ductility. Is resistant to tensile load.
Based on phase is divided into two, namely:
Nodular Cast Iron White phase α. (Ferritic)
Formed by cooling slowly.
Nodular Cast Iron Black Berfasa α + Fe3C. (Pearlitic)
Formed by rapid cooling.
d) Cast Iron Maliabel (MELLEABLE Cast Iron)
Cast iron obtained through the tempering process that has hard and brittle nature and form of graphite-like chunks.
Examples: spare parts are small.
Based on phase is divided into two, namely:
White Cast Iron Maliabel berfasa α. (Ferritic)
Formed by cooling slowly.
Cast Iron Black Maliabel Berfasa α + Fe3C. (Pearlitic)
Formed by rapid cooling.
Non Ferro
Non ferrous metal is a metal with its major constituent elements other than Fe (iron) which is mixed with other elements.
Example: brass (Cu + Zn), aluminum, and brass.
Non Metals
Non-metal is a material with a low boiling point and is an insulator, can not stand high temperatures, and partly translucent. Non-metallic material consists of:
Polymer
Polymer is a combination of monomers that form the hydrocarbon chain (C-H) long consisting of:
1) Thermoplastics
A thermoplastic polymer with a straight carbon chain, not high temperature resistant, and b
