S31803 hex nut DIN934 ASME B18.2.2 duplex hex nut

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

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 .

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

Super Duplex 2507 Lock Washers has excellent corrosion resistance in marine environments.Lock washers are designed to be tightened to a required torque beneath an ordinary fastener. They exert a spring tension that keeps the fastener from vibrating loose. They are often attached to the nut side of the fastener.

2507 (PREN 40-45), with 25-26 Cr and increased Mo and N compared with the 25Cr grades. A super austenitic-ferritic duplex stainless steel with exceptional strength and corrosion resistance ideal for chemical process, petrochemical, and seawater applications.
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.”

Super Duplex Steel Stud Bolt is available in lengths ranging from 2mm to 200mm and has high strength values as well. Super Duplex S32750 is the most common duplex ferritic, austenitic stainless steel grade used for producing stud bolts.

The inclusion of chromium imparts good corrosion resistance to austenitic grade 304. However, increasing the chromium content to about 25%, as in the case of 2205 duplex stainless steel pipe makes the alloy resilient across several media.
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.”

A high molybdenum superaustenitic with outstanding resistance to chloride pitting, crevice corrosion and stress corrosion cracking. Suitable for use in pulp mill bleach plants, seawater heat exchangers and chemical process equipment.

The most widely used stainless steel alloy is duplex 2205. It is also known as Duplex 2205 or Duplex 2205. It has ferritic and austenitic properties, making it ideal for environments with strong corrosion resistance. Good strength is a primary requirement. Duplex 2205 studs are essentially just a piece of threaded rod, in some cases, they are all designed to accept nuts, such studs are called stud bolts. It has excellent corrosion resistance and is superior to stainless steel 316 in most environments.

Super Duplex 2507 stud bolts (EN 1.4410) are made of a stainless steel alloy containing 25% chromium, 4% molybdenum, and 7% nickel. Duplex 2507 is known for its high strength and excellent localized corrosion resistance to chloride.

In duplex steels, the duplex microstructure has the high strength of ferritic grades while retaining the corrosion resistance of austenitic grades. It is not uncommon to use this metal as a practical solution to chloride-induced stress cracking, the Achilles heel of stainless steel.
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 B36.46

Super Duplex 2507 is used in environments containing high levels of chlorides or dissolved oxygen, such as seawater cooling, salt evaporation, and desalination, geothermal wells.

ASTM A182 F53 Flange is a high strength flange that has 550MPa minimum yield strength and 800MPa minimum tensile strength.

Duplex stainless steel fasteners are made from alloys with high chromium content and low to moderate nickel content.

2507 (UNS S32750) is a super duplex stainless steel designed for applications which require exceptional strength and corrosion resistance. 2507 is a 25% chromium, 4% molybdenum, and 7% nickel alloy resulting in excellent resistance to chloride pitting and crevice corrosion attack.

Duplex 2507 is a super duplex stainless steel designed for applications which demand exceptional strength and corrosion resistance.

If the 22cr Duplex Pipe is to be welded, no filler metal is required to be added to the alloy during its welding process.

It is alsohighly resistant to inorganic acids, especially if they contain chlorides.

Some of the typical applications of duplex steel grade 2205 are oil and gas exploration, processing equipment, transport, storage and chemical process, high chloride and marine environments, paper machines, liquor tanks, pulp, and paper digesters.

The Benefits of Duplex Stainless Steel are improved Strength, because many duplex grades are as much as two-times stronger than austenitic and ferritic stainless steel grades, high Toughness and Ductility, high Corrosion Resistance, and Cost Effectiveness.
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.”

S31803 Duplex Steel is a 22% chromium duplex (austenitic/ferritic) steel with moderate to good strength and good general corrosion/stress corrosion/cracking resistance.

Alloy 2507 has 25% chromium, 4% molybdenum, and 7% nickel. This high molybdenum, chromium and nitrogen content results in excellent resistance to chloride pitting and crevice corrosion attack and the duplex structure provides 2507 with exceptional resistance to chloride stress corrosion cracking.

Super Duplex 2507 has more than twice the strength of conventional austenitic stainless steels in the annealed condition.

Type: Seamless, Welded

WT: SCH5-SCH80S

Due to the alloy’s very high mechanical strength, dual-phase fastener manufacturers can reduce the weight of their designs by thinning the cross-section of the final product, proving a cost-saving alternative to other grades of stainless steel.

The microstructure and composition of the duplex 2205 alloy provides corrosion resistance superior to Type 316 or 317 in many environments, and its minimum yield strength is more than double that of conventional austenitic stainless steels.

ASTM A182 Grade F51 is the standard duplex stainless steel and is also called ¡°duplex 2205¡± or ¡°alloy 2205¡±.

The applications of the flanges include petroleum, petrochemical, oil and gas and other high performing piping systems.

The flanges shall not be used at temperatures over 600¡ãF [315¡ãC] since it may be subject to embrittlement after service at moderately elevated temperatures.

The equivalent proportions of their existence make it possible for the alloy to express qualities reminiscent of each steel type. Take austenitic steels, where the most basic grade, like 790 steel duplex pipe, has substantial corrosion resistance properties.

The dual phase steel / super duplex steel stainless steel pipe is a kind of stainless steel with high strength and high corrosion resistance, which has the properties of austenitic stainless steel and ferritic stainless steel. Generally, when the carbon content is low, the Cr content is 18% ~ 28%, and the Ni content is 3% ~ 10%. Some steels also contain Mo, Cu, Nb, Ti, N and other alloy elements.
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.”

The SA 182-F51 S31803 comes under ASME B16.47, B16.48 and B16.5 standards with sizes ranging from 1/8 NB to 48NB.

Super Duplex UNS S32760 is one of the most common super duplex grades on the market. UNS S32760 is a duplex stainless steel designed for use in corrosive chlorine-containing environments, with the addition of W and Cu compared to UNS S32750.