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When did ductile iron pipe come out? Ductile iron pipe, also known as ductile cast iron pipe or simply DI pipe, was first introduced in the late 1940s. Its development was a result of the need for a more durable and versatile material for water and wastewater transportation.
The history of ductile iron pipe dates back to the early 19th century when cast iron pipes were commonly used for water distribution. However, the brittle nature of cast iron made it susceptible to cracking and breaking under pressure or when exposed to ground movement. This led to frequent leaks and bursts, causing significant disruptions and infrastructure damages.
In the 1940s, researchers at the International Nickel Company (INCO) began experimenting with the addition of small amounts of magnesium to cast iron. This process, known as the Sorel process, transformed the microstructure of the material, resulting in a more flexible and ductile material.
The breakthrough came in 1948 when Keith Dwight Millis, an engineer at INCO, discovered that adding small amounts of magnesium to molten iron produced a unique form of cast iron with high strength and ductility. This new material, known as ductile iron, was able to withstand greater internal and external pressures without cracking or breaking.
Moreover, the development of ductile iron pipe paved the way for advancements in other industries. Its success prompted further research and innovation in the field of metallurgy, leading to the development of other ductile iron applications, such as automotive components, construction materials, and machinery parts.
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