Cast iron contains tensile strength of about 150N/mm2 and the compressive strength is about 600N/mm2. It is an alloy of Carbon and Iron. 6. Cast iron is highly favoured for its ability to be easily cast into complex shapes when molten and for its low cost. It contains 1.5-4.3% carbon and 0.3-5% silicon plus manganese, sulphur and phosphorus. 2. grey cast iron (that is, Grades FG 300, FG 350 and FG 400) present special difficulties for section 10 mmand thinner. Its properties are as follows: In addition, the excellent properties of Grey Cast Iron have made it one of the most widely used alloys. The all data in this documents is referred to Chinese standard of GB/T 9439-1988. The melting point is about 1250 ºC. Grey Cast Iron is made by remelting pig iron. 3. The production method of casting is convenient to achieve a near final shape of complex geometries. However, you can not inspect the quality by chemical components. It does not get attracted to a magnet. Following are the properties of cast iron: 1. This page shows summary ranges across all of them. Small amounts of Silicon, Phosphorus, Manganese and Sulfur are also present in it. 4. Cast iron may not be useful for forging work due to lack o… Cast iron has good corrosion resistance, so it can be used for water-carrying pipes etc. It becomes soft when kept in saltwater and shrinks when cooled. 5. Grey cast iron is a cast iron. Gray cast iron is a widely used construction material with a unique combination of properties such as very good thermal conductivity, vibration damping ability, and good machinability. It is brittle with low tensile strength, but is easy to cast. It has the highest thermal conductivity among the cast irons in the database. For more specific values, follow the links immediately below. Grey iron is used to advantage in the automotive industry, because of its excellent properties such as machinability, heat conductivity and vibration damping capacity. 7. The properties of grey cast iron include eleven common variations. Depending on the silicon content of the cast iron, it is classified as either white cast iron or grey cast iron and may be treated further under particular temperatures to produce malleable or ductile cast iron. It has a specific gravity of 7.5. Chemical Properties of grey cast iron According to the different grades, the grey cast iron has different chemical components, however, normally, all gray iron grades have the following chemical component range: Carbon (C) 2.8 - 3.9%, Silicon (Si) 1.1 - 2.6%, Manganese (Mn) 0.5 - 1.2%, P ≤ 0.3%, S ≤ 0.15%. Grey cast iron is still the most used foundry metallic material, at 46% of this total world castings production. General properties of cast iron. The reasons behind its popularity are: ability to make complex structures and low cost. Therefore, it is good at compression. Academia.edu is a platform for academics to share research papers. Grey Cast Iron (Gray iron) is so called because of the colour of the fracture face.

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