Different Types Of Cast Iron Valve

Cast iron is an alloy of different metals that include: iron, carbon, and silicon. Presence of different levels of metals provides the various cast iron types.


The various types include:

Gray: It is the most common and is favored by many people as it is strong and difficult. It’s good to be aware that even though this iron is believed to be gray, it is not really gray, it is black. The fracture surfaces are those which are grey thus its name.

It is simple to cast gray iron nevertheless, it’s the main flaw is that you can not reheat or rework it after casting. Additionally, it tends to be brittle once you place it under tension.

White iron: it’s a light appearance and comprises carbon just as carbide. That makes it very hard and resistant to abrasion. Experts report that it is hard as a result of precipitation of carbon. The precipitated carbon forms large particles that increase the hardness of the iron.If you are interested in more info about Steel pipes and valves (which is also known as”ท่อเหล็ก และวาล์วต่างๆ” in the Thai language) then you check out online websites.


Besides being tough, it’s also cost-effective. In addition, it is excellent for different applications such as lifter bars, shell liners, pump wear surfaces and coal pulverizers.

It’s the main flaw is that it is very brittle. Studies have proven that this iron is much more brittle than grey iron.

Ductile: it is proven to be strong, tough, easy to machine and less costly compared to other cast irons. To create this iron you will need to add tiny amounts of magnesium to molten iron to change the graphite structure. The calcium reacts with oxygen and sulfur leading to nodule formed graphite.

The cool thing about it is that you could easily cast it to various sizes and varying thicknesses. It is heavily used in auto manufacturing where it is used in making automobile axles, crankshafts, engine sticks and a slew of other automobile parts.

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