Iron ductility

Dual cure sites Ductile iron Ductile particles Duct silencers Dugro [7681-76-7]... 

Cast Iron, Ductile Iron, and High-Silicon Iron. 10-92... 

CAST IRON, DUCTILE IRON, AND HIGH-SILICON IRON... 

Cast irons are iron with high levels of carbon. Heat treatments and alloying element additions produce gray cast iron, malleable iron, ductile iron, spheroidal cast iron and other grades. The mechanical properties vary significantly. Nickel-containing cast irons have improved hardness and corrosion resistance. Copper or molybdenum additions improve strength. 

Major internal corrosion can occur in pipes made of cast iron, ductile iron, steel, galvanized steel, and cement-based materials. Table 3.3 summarizes the types of corrosion occurring in different piping materials and the possible tap water quality problems caused by them, as described by the AWWA Research Foundation in 1996 in a reference book on internal corrosion of water distribution systems (17). 

Water is pumped from temporary storage tanks or from the treatment facilities through large-diameter transmission water pipes. The transmission water piping system contains large valves where the water amounts are measured using water meters. The materials of construction of transmission pipe are cast iron, ductile iron, prestressed concrete, asbestos concrete, PVC and welded steel piping. All of these materials except PVC contain ferrous metal components, which need corrosion protection. The different materials used in transmission are as shown in Table 4.31. 

The water mains used to distribute drinking water have normally been constructed from cast-iron, ductile iron, asbestos cement and, more recently, from plastics (for example, MDPE medium density polyethylene). Leaching of lead from these materials does not normally occur. Very exceptionally, lead water mains have been used to distribute drinking water. The only known occurrences are in Ireland where their replacement has high priority (Devaney, 2009). 

Body bronze, iron, ductile iron, carbon steel, low-alloy steel, stainless steel. Monel, nickel alloys, PVC plastic... 

Iron (cast iron, ductile iron, malleable iron) AC AC or DCEN... 

Cast iron, ductile iron, or steel pipe may be coated at the mill by a process during which the pipe is spun on the center of its longitudinal axis while a mortar mixture is sprayed onto the inside surface in a uniform, dense layer. After proper curing, provided the pipe is handled carefully, this coating can protect the pipe interior against attack by water and many other liquid and gaseous corrosive environments. 

Ductile cast iron Ductile irons (aU grades)... 

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