Ductile iron, also called ductile cast iron or nodular cast iron, is a kind of cast iron invented in 1942. Ductile iron is composed of spherical graphite instead of flakes which is visible in grey iron and is made by treating molten iron with magnesium. While most varieties of cast iron are brittle, ductile iron is much more ductile. This is attained through multifaceted metallurgy and foundry process control. Ductile Iron has been successful as it offers a blend of versatility and properties not available in any of its rivals. Its castability, machinability, dampening properties, and economy of production are almost equal to those for which Gray Iron is famous, but its mechanical properties – strength, wear resistance, fatigue strength, toughness and ductility are competitive with many cast, forged and fabricated steel components.

The American Association of State Highway and Transportation Officials (AASHTO) are the nationally recognized standards organization for the analysis of lighting structures. They allow the bending strength of ductile iron to be 3 to 4 times that of cast aluminum and grey iron.

Spring City is self-assured that their ductile iron lamppost will last the lifetime of our project. Their ductile iron products are practically durable and have been known to endure some of the most extreme moments in American history. If we choose to buy Spring City’s ductile iron lamppost for steel shafts, we will be investing our money in a value product that will look new for many years to come! This wide-ranging warranty covers the products to be free from defects in material and workmanship under normal use and operation for twenty-five years.

The Benefits of Choosing a Ductile Iron Lamppost

• 25 Year Warranty Available

• Quickly replacing cast steel in structural applications

• Stronger than cast iron and cast aluminum

• High impact strength

• Does not become brittle unlike aluminum

• Excellent dampening qualities – Perfect for bridge applications

• Service life is 3 times as long as that of cast aluminum

For more information visit: www.springcity.com