Is ductile iron the same as cast iron?

Is ductile iron the same as cast iron?

Ductile iron has excellent corrosion resistance, tensile strength, and yield strength. Unlike cast iron, ductile iron does not break when it is bent, so it is more suited for high demand applications. Ductile iron is a strong and reliable material for pipes, fittings, and valves.

How is nodular iron made?

Nodular cast iron is made by inoculating the molten metal, just before casting, with a small amount of magnesium or cerium. This causes the free carbon in the finished casting to appear as rounded nodules of graphite, rather than as flakes.

What is SGRN material?

S G Iron is also known as Spheroidal Graphite Iron, Ductile Cast Iron, Nodular Cast Iron, Spherulitic Graphite Cast Iron. S G Iron is a type of cast iron that has been treated while molten with an element such as magnesium or cerium to induce the formation of free graphite as nodules or spherulites.

How is austempered ductile iron made?

Austempered ductile iron is produced by heat-treating cast ductile iron to which small amounts of nickel, molybdenum, or copper have been added to improve hardenability. Specific properties are determined by the careful choice of heat treating parameters.

How do I know if my pipes are cast iron?

Cast iron pipe is recognizable by its black finish and the bulge at the end of each pipe section, called a “hub,” that the adjacent pipe fits into. Surface rust may eliminate the black finish on extremely old cast iron, leaving it simply rust-color.

What is GGG40?

GGG40 is the most commonly used nodular cast iron alloy and has a predominantly ferritic structure. This cast iron offers excellent machinability combined with good impact resistance, high electrical conductivity, good elongation properties and magnetic permeability. The material cannot be welded.

Is nodular iron stronger than steel?

While there is no large difference when it comes to tensile strength, ductile iron has the greater yield strength (40 ksi). Cast steel, on the other hand, can only reach 36 ksi yield strength. As the strength of ductile iron increases ductility decreases.

Which is better cast iron or cast steel?

Cast Steel Cast Iron is very easy to cast due to its very good flowability and low shrinkage. Cast Steel has less flowability and more shrinkage as compared to Cast Iron. Cast iron is better in terms of corrosion resistance and resistance to mechanical wear. Cast steel is better in terms of impact loads.

What is the chemical composition of SG iron?

Carbon 3.2 to 3.6% Silicon 2.2 to 2.8% Manganese 0.1 to 0.5% Magnesium 0.03 to 0.05%

What is ADI material?

Austempered Ductile Iron (ADI) is a specialty heat treated material that takes advantage of the near-net shape technology and low cost manufacturability of ductile iron castings to make a high strength, low cost, excellent abrasion-resistant material.

What is Austempering in heat treatment?

Austempering is a heat treating process for medium-to-high carbon ferrous metals which produces a metallurgical structure called bainite. It is used to increase strength, toughness, and reduce distortion.

What are old drain pipes made of?

The types of home drain pipes that are most typically seen today are either made of copper or the plastics polyvinyl chloride (PVC) and acrylonitrile butadiene styrene (ABS). Other types of drain pipes are sometimes encountered in pre-1960 homes, such as drain/waste/vent (DWV) piping made of iron or steel.

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