If you're in the
petrochemical, gas or oil industries, you'll appreciate the need for
extra-strong and corrosion-resistant Pipes, Flanges and other equipment. You'll
also know that specialized stainless steel alloys and sometimes titanium are
used to make this equipment, and how duplex steel
flange supplies to make the choice of material.
Stainless steel does not
readily corrode, rust or stain with water as ordinary steel does, but despite
the name it is not fully stain-proof, most notably under low-oxygen,
high-salinity, or poor-circulation environments. There are different grades and
surface finishes of stainless steel to suit the environment the alloy must
endure. Stainless steel is used where both the properties of steel and
resistance to corrosion are required. For lighter and more strength, duplex steel fittings
manufactures were born.
Duplex stainless steel offers
excellent resistant to corrosion and very high mechanical strength. The high corrosion
resistance of duplex stainless steel ensures significantly more uptime than
carbon steels and conventional stainless steels, while the mechanical strength
allows for lighter constructions, more compact system design and less welding. Their microstructures consist of a mixture of
austenite and ferrite phases. As a result, duplex stainless steels display
properties characteristic of both austenitic and ferritic stainless steels.
This combination of properties can mean some compromise when compared with pure
austenitic and pure ferritic grades.
Duplex stainless steels are in
most cases, tougher than ferritic stainless steels. Strengths of duplex
stainless steels can in some cases be double that for austenitic stainless
steels.
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