| Ductile Iron |
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Information AboutDuctile Iron |
| CATEGORIES ABOUT DUCTILE IRON | |
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Ductile iron is one type of Cast Iron . It was invented in 1942 by Keith Millis {Link without Title} . A typical chemical analysis of this material is:
Other elements such as Copper may be added intentionally to increase tensile and yield strength while simulaneously reducing elongation. The unique characteristic of ductile iron is that the Graphite forms into a Spherical shape. Sometimes this is referred to as a "nodular" shape. Ductile iron may also be called "nodular iron". Casting s made of ductile iron are used in numerous applications. Examples are in automobile construction, industrial machinery, wind turbine electrical energy generation, valves, air conditioning machinery, lawn & garden equipment, agricultural products and many other types of castings. For corrosion resistant applications 15% to 30% of the Iron in the alloy may be replaces with varying amounts of Nickel and/or Copper and/or Chromium . A recent development in ductile iron metallurgy is Austempered Ductile Iron where the metallurgical structure is manipulated through a sophisticated heat treat process. A large percentage of the annual tonage of ductile iron produced is used in water and sewer lines. This is called cast ductile iron pipe. Ductile iron pipe is stronger, easier to tap, requires less support and provides greater flow area compared to other materials. In difficult terrain it may be a better choice than PVC , Concrete , Polyethylene or Steel pipe. EXTERNAL LINKS Non-Commercial sites: |
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