What are the grades of ductile iron?

What are the grades of ductile iron?

Ductile Iron Grade Comparison

What is A536?

Ductile Iron ASTM A536 ASTM A536 65-45-12 is a nodular Iron with a ferritic and pearlitic microstructure and mechanical properties comparable to low alloy steels. Ductile iron 65-45-12 is one grade in a family of many. Chemistry requirements are not specified in the ASTM A536 standard.

What are the different grades of ductile materials?

The grades of ductile iron are as follows:

• Grade 60-40-18.
• Grade 65-45-12.
• Grade 80-55-06.
• Grade 100-70-03.
• Grade 120-90-02.

Is ductile iron better than steel?

Ductile iron’s corrosion resistance is superior to unalloyed steel, and even highly alloyed steels in certain environments. Ductile iron’s corrosion resistance can be improved by understanding the corrosion mechanism and alloying the material appropriately.

How strong is ductile iron?

Ductile iron castings are very strong compared to regular cast iron (gray iron). The tensile strength of cast iron is 20,000 – 60,000 psi while ductile iron starts at 60,000 psi and can go to 120,000 psi.

Is cast iron the same as ductile iron?

The difference between traditional cast iron and modern-day ductile iron is the shape of the graphite. While cast iron has small flakes of graphite, ductile iron contains spherical graphite nodules. Because of the spherical shape of the graphite, ductile iron is often called spheroidal iron or nodular cast iron.

Is ductile iron same as steel?

Ductile iron and steel have similar mechanical properties. The difference in properties shouldn’t therefore influence the choice of one material over the other. Steel has better shock resistance than ductile iron.

How long does ductile iron pipe last?

100+ years
Ductile iron pipe is made to last 100+ years, and is environmentally preferable over synthetic pipe materials, both in its recycled content and its own recyclability. This strong, safe and reliable product has the longevity to last 100+ years.

Why is ductile iron better than cast iron?

Ductile iron is less brittle than other cast iron, even before heat treatment. It does not fracture as easily with impact. Being ductile allows the iron to bend. In comparison, gray cast iron is harder.

What is the difference between cast iron pipe and ductile iron pipe?

Ductile iron can be bent without breaking, whereas cast iron is brittle and breaks when bent. As ductile iron can be bent, it can be made into different shapes and forms. But one cannot make out different shapes and forms using cast iron. While ductile iron is flexible, cast iron is not.

Is ductile iron stronger than cast iron?

With regard to practical uses, ductile iron pipes are used in sewer and water lines. This is because they are much stronger than cast iron. Moreover, ductile iron is better than cast iron in difficult terrains. Ductile iron is mainly used in the automobile industry such as trucks, tractors and oil pumps.

Does ductile iron pipe rust?

Ductile iron pipe is resistant to corrosion in most soils. In more aggressive soils, V-Bio® enhanced polyethylene encasement wrapped around the pipe helps mitigate corrosive conditions. Cement-mortar lining on the inside increases the pipe’s resistance to corrosion, as well.