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

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