The photo of PMI test of S32750 round bar

Higher chromium, molybdenum and nitrogen content results in a Pitting Resistance Equivalent Number (PREN) > 40, providing superior pitting and crevice corrosion capabilities to austenitic and duplex stainless steels in virtually all corrosive media, and critical pitting temperature Above 50¡ãC .

ASTM A240 Type 2205 Plate is a duplex stainless steel plate that is used extensively in various industries such as chemical processing, oil and gas exploration, and marine engineering. SA 240 GR 2205 Sheet is made from grade 2205 stainless steel, which is a combination of ferritic and austenitic steel.

It is widely used in offshore oil and gas exploration/production and in heat exchangers in petrochemical/chemical processing.

A789 UNS S31803 and UNS S32205 are two grades of duplex stainless steel that are widely used in various industrial applications. These Duplex S31803 Seamless Pipes are known for their excellent corrosion resistance, high strength, and good weldability. A789 is a specification that covers seamless and welded tubes made from duplex stainless steel.

This category of material includes grades 2205, F51, F53, and F60. Duplex stainless has increased in popularity over the years due to its excellent chemical and mechanical properties versus their basic stainless counterparts, given especially that the cost differences are minimal now as the availability has increased.

S32750 is used for marine applications, flue gas scrubbing equipment, and pulp & paper mill equipment.

Duplex2507 thread rod are dual phase austentic-ferritic duplex fasteners manufactured from alloy containing chromium, nickel and molybdenum with restricted carbon content and minimum PREN42. SAF2507 thread rod have high strength, resistance to pitting, stress corrosioni cracking, erosion and corrosion fatigue, crevice corrosion resistance.

Another reason for the good mechanical properties of duplex stainless steel fasteners can be attributed to the mixed but balanced austenitic and ferritic microstructure present in the alloy.

2507 is also used in Flue Gas Scrubbing Equipment, Pulp and Paper Mill Equipment, Offshore Oil production/technology and Oil and gas industry equipment.

UNS S32750 Super Duplex Hex Nuts has been developed at the beginning of the century to cope with the increasing demand, across many industries, for more durable steels that could withstand demanding service conditions. The versatile and extensive range of UNS S32760 Super Duplex Hex Nuts reflects the differing lifestyles in every kitchen, accompanied with the proper faucet.

The 2205 Duplex Stainless Pipe exhibits magnetic properties in certain environments.

Duplex 2205 stainless steel (ferritic and austenitic) is widely used in applications requiring good corrosion resistance and strength. UNS S31803 grade stainless steel was modified several times to form UNS S32205, which was approved in 1996. This grade offers higher corrosion resistance.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.60

2507 has Good general corrosion resistance, Suggested for applications up to 600¡ã F, and Low rate of thermal expansion.

Its impact strength or hardness properties inherited from the ferritic side make 2507 stainless steel round bar suitable for structural applications including bridge construction and more.

ASTM A815 UNS S32205 Long Radius Elbow is used in turning pipe direction and is also resistant to chloride and sulfide environments. These ASME B16.9 Duplex Stainless Steel Seamless Fittings have a higher chromium content.

The structure of 2205 duplex stainless steel consists of a pool of austenite surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. 2205 is often referred to as the workhorse grade and is the most widely used grade in the duplex stainless steel family.
Type Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”
Manufacturing technique Hot rolling /Hot work ,Cold rolling
Producing Standard ASME B36.10 ASME B36.66

Super Duplex has all the benefits of other duplex steels, specifically the strength benefits of their biphasic structural composition of equal parts austenitic and ferritic stainless steel. This microstructure makes all duplex steels around twice as strong as regular single structure ferritic or austenitic steels, but Super Duplex has a higher chromium and molybdenum content, giving it considerably increased resistance to corrosion than its counterparts.

At temperatures above 300¡ãC, the brittle trace components of 2205 precipitate, and at temperatures below -50¡ãC, the trace components undergo a ductile-brittle transition; therefore, this grade of stainless steel is not suitable for use at these temperatures.

Duplex stainless steel 2205 alloy is a compound stainless steel composed of 22% chromium, 2.5% molybdenum and 4.5% nickel nitrogen alloy.
It has high strength, good impact toughness and good overall and local stress corrosion resistance.

Since the material is also resistant to acids and chlorine compounds, it could see its application in marine environments, especially in saltwater containing chlorine compounds. The ferritic portion of the duplex structure of Super Duplex 2507 round bar alloy makes it resistant to stress corrosion cracking in warm chloride-containing environments.

UNS S32750 Flanges are used in seawater piping, desalination plants, mechanical components, high-pressure RO plants, etc. SD pipe flanges are used in heat exchangers, service and process water systems, offshore platform, oil & gas industry, etc. These flanges are also found in line pipes, power industry FGD system, industrial & utility scrubber, absorber tower, pressure vessel, etc.

Super Duplex Steel have the benefit as it counterpart ¨C it has lower alloying costs when compared with austenitic grades and ferritic.

As experts in the field of fasteners, we recognize that this alloy can be used in a variety of applications including heat exchangers, piping, pressure vessels, tanks, fans, pulp and paper equipment, oilfield equipment and press rolls. At HT PIPE you can find Duplex Premium Gaskets in high quality.

2507 is a super-duplex (austenitic-ferritic) stainless steel for service in highly corrosive conditions.

Super Duplex Stainless Steel Zeron 100 Washers, which is alloyed steel aimed for the usage in hostile atmospheres. Super Duplex Zeron 100 Lock Washers provides these attributes in sea water service and as well in progression pipe work functions.

It is also exceptionally resistance to chloride SCC. Flanges are supplied with pitting resistance equivalent that is assuring very good pitting corrosion resistance.

Duplex 2205 has higher resistance to crevice and erosion corrosion than sus316L austenitic stainless grades.

A ferrous metal is one that contains iron. Therefore, stainless steels are ferrous metals as their main constituent is iron, even in the very highly alloyed grades, such as super duplex stainless steels, or super austenitic stainless steels.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

Duplex 2205 flanges are made from an austenitic-ferritic stainless steel, which was designed to deliver higher strength and corrosion resistance than 300 series stainless steels.

The steel has excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion.

Cold drawn and cold rolled is the primarily prepare for 2205 Duplex Stainless Steel Pipe. Due to the material characteristic of high quality and hardness, duplex steel is more difficult to process than austenitic steel. It is very easy to damage, particularly for small thickness and large diameter pipes, it incorporates a long and hard-working methods.
Type “Seamless Pipe
Seamless Tube
Welded Pipe
Welded Tube
SAW LSAW ERW EFW
Beveled End, Plain End”
Size “OD: 1/2″” ~48″”
Thickness: SCH5~SCHXXS
Length :As per your requirement.”

Duplex¡¯s premium mechanical and chemical properties are slightly offset by its difficulty in formability.

ASTM A182 F51 equates to UNS S31803. This was the original caption for a 22% Cr duplex stainless steel.

ASTM A479 Duplex Steel UNS S31803 Nuts have excellent general corrosion resistance in a variety of aggressive chemicals including seawater and industrial acids. The microstructure of ASME SA 479 Duplex Steel UNS S32205 Hex Nuts consists of a mixture of austenitic and ferritic phases. Therefore, it exhibits the properties of austenitic and ferritic stainless steels.