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Duplex Tubing Maufacturers

Duplex Tubing is made of two phase microstructures consisting of grains of ferritic and austenite stainless steel. The use of Duplex Tubing is very common and increasing in production mills and manufacturing companies. It is composed of 50% ferritic and 50% austenite stainless steel. New grades are frequently announcing. Duplex Tubing offers great strength and higher resistance to stress corrosion cracking. Om Tubes Duplex Tubing is widely used in desalination plants, heat exchangers and marine applications. In the last 30 years, the use of Duplex Tubing has taken off in significant way. This has happened due to advancement in steel making techniques especially with the control of nitrogen content. Standard austenite steel and ferritic steel 430 are relatively easy to make. Duplex Tubing has wide range of applications with some important technical weakness in both types. Om Tubes being Duplex Tubing Manufacturers provides you with best quality & services.
In recent grades nitrogen and manganese are used to lower the nickel content. This stabilizes the price of the product. As of right now developmental phase of duplex steel is going on hence each mill is promoting its own particular brand. It is agreed that there are too many grades and this is going to be same until a winner is emerged.

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what is the name or number of nonmagnetic stainlessteel ?

It is commonly stated that "stainless steel is non-magnetic". This is not strictly true and the real situation is rather more complicated. The degree of magnetic response ormagnetic permeabilityis derived from the microstructure of the steel. A totally non-magnetic material has a relative magnetic permeability of 1. Austenitic structures are totally non-magnetic and so a 100% austenitic stainless steel would have a permeability of 1. In practice this is not achieved. There is always a small amount of ferrite and/or martensite in the steel and so permeability values are always above 1. Typical values for standard austenitic stainless steels can be in the order of 1.05 - 1.1. SeeComposition effects on the magnetic permeability of austenitic stainless steels
It is possible for the magnetic permeability of austenitic steels to be changed during processing. For example,cold work and weldingare liable to increase the amount of martensite and ferrite respectively in the steel. A familiar example is in a stainless steel sink where the flat drainer has little magnetic response whereas the pressed bowl has a higher response due to the formation of martensite particularly in the corners.
In practical terms, austenitic stainless steels are used for "non-magnetic" applications, for example magnetic resonance imaging (MRI). In these cases, it is often necessary to agree a maximum magnetic permeability between customer and supplier. It can be as low as 1.004.

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Jun 19, 2014 | Measuring Tools & Sensors

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