Duplex Steel

 

 

ASTM A790 Duplex Steel werkstoff nr. 1.4462 Fasteners Manufacturer, Exporter & Suppliers.

 

Duplex Steel UNS S31803, S32205, S32550, S32750, S32760 Fasteners Suppliers in India.

 

Fasteners And Fixtures are engaged in manufacturer, suppliers & exporters a qualitative range of Duplex Steel Fasteners that using high quality raw materials. We also offer a complete range of Duplex Steel Fasteners such as Bolts, Nuts, Washer, Screw, threaded rod and duplex steel screws etc. These Duplex Steel Fasteners are available in various size, shapes, specification & thickness as per requirements of our clients. These are widely used in various application industry like Oil and Gas industries, Construction Industries, Offshore Industries, On Shore Industries etc.

 

Duplex stainless steels are called "duplex" because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel. When duplex stainless steel is melted it solidifies from the liquid phase to a completely ferritic structure. As the material cools to room temperature, about half of the ferritic grains transform to austenitic grains ("islands"). The result is a microstructure of roughly 50% austenite and 50% ferrite.

 

Super duplex stainless steels are generally more complex, more highly alloyed materials with PREn (Pitting Resistance Equivalent number) = 40.0 and offer even higher strength and corrosion resistance making them suitable for very demanding applications such as offshore marine engineering.

 

Specification

 

Standard	:	ASTM / ASME SA 790
Size	:	M02 to M30
Length	:	3 mm To 200 mm
Grade	:	UNS NO. S 31803, S 32205, S 32550, S 32750
Specification	:	IS, BS, ASTM
Type	:	Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc.

 

 

 

STANDARD	WERKSTOFF NR.	UNS
Duplex 2205	1.4462	S31803 / S32205

 

 

Bolts Type

 

Hex Head Bolt	Socket Cap Screw	Carriage Bolt	Anchor Bolt	Eye Bolt
Flange Bolt	Elevator Bolt	Lag Bolt	Draw Bolt	Plow Bolt
Stove Bolt	Tap Bolt	Machine Bolt	Hanger Bolt	U Bolt
Grub Screw	Set Screw	Shoulder Bolt	Step Bolt	J Bolt

 

Duplex Stainless Steel Fasteners Useful Info

 

 

• Duplex stainless steels have a two-phase microstructure of austenite and ferrite grains.The duplex structure gives this family of stainless steels a combination of attractive properties:Strength:
  
  
• Duplex stainless steel is about twice as strong as regular austenitic or ferritic stainless steels.Toughness and ductility:
  
  
• Duplex stainless steel has significantly better toughness and ductility than ferritic grades; however, they do not reach the excellent values of austenitic grades.
  
  
• Corrosion resistance:As with all stainless steels, corrosion resistance depends mostly on the composition of the stainless steel. For chloride pitting and crevice corrosion resistance, their chromium, molybdenum and nitrogen content are most important. Duplex stainless steel grades have a range of corrosion resistance, similar to the range for austenitic stainless steels, i.e from Type 304 or 316 (e.g. LDX 2101©) to 6% molybdenum (e.g. SAF 2507©) stainless steels.
  
  
• Stress corrosion cracking resistance:Duplex stainless steel shows very good stress corrosion cracking (SCC) resistance, a property they have "inherited" from the ferritic side. SCC can be a problem under certain circumstances (chlorides, humidity, elevated temperature) for standard austenitics such as Types 304 and 316.
  
  
• Cost:Duplex stainless steel has lower nickel and molybdenum contents than their austenitic counterparts of similar corrosion resistance. Due to the lower alloying content, duplex stainless steel can be lower in cost, especially in times of high alloy surcharges. Additionally, it may often be possible to reduce the section thickness of duplex stainless steel, due to its increased yield strength compared to austenitic stainless steel. The combination can lead to significant cost and weight savings compared to a solution in austenitic stainless steels.

 

Duplex Stainless Steel Fasteners Type

 

Duplex Stainless Steel Fasteners Duplex Stainless Steel bolts Duplex Stainless Steel Nuts Duplex Stainless Steel Screw Duplex Stainless Steel Washer Duplex Stainless Steel Automotive Fasteners Duplex Stainless Steel Marine Fasteners Metric Duplex Duplex Duplex Stainless Steel Fasteners S31803 Duplex Stainless Steel Nuts S31803 Duplex Stainless Steel Bolts S31803 Duplex Stainless Steel Screw S31803 Duplex Stainless Steel Washer S31803L Duplex Stainless Steel Nuts S31803L Duplex Stainless Steel Bolts S31803L Duplex Stainless Steel Screw S31803L Duplex Stainless Steel Washer 2507 Duplex Stainless Steel Nuts 2507 Duplex Stainless Steel Bolts 2507 Duplex Stainless Steel Screw 2507 Duplex Stainless Steel Washer

2205 Duplex Stainless Steel Nuts 2205 Duplex Stainless Steel Bolts 2205 Duplex Stainless Steel Screw 2205 Duplex Stainless Steel Washer S32550 Duplex Stainless Steel Nuts S32550 Duplex Stainless Steel Bolts S32550 Duplex Stainless Steel Screw S32550 Duplex Stainless Steel Washer S32750 Duplex Stainless Steel Nuts S32750 Duplex Stainless Steel Bolts S32750 Duplex Stainless Steel Screw S32750 Duplex Stainless Steel Washer S32750H Duplex Stainless Steel Nuts S32750H Duplex Stainless Steel Bolts S32750H Duplex Stainless Steel Screw S32750H Duplex Stainless Steel Washer S32750L Duplex Stainless Steel Nuts S32750L Duplex Stainless Steel Bolts S32750L Duplex Stainless Steel Screw S32750L Duplex Stainless Steel Washer

2205 Duplex Stainless Steel Nuts 2205 Duplex Stainless Steel Bolts 2205 Duplex Stainless Steel Screw 2205 Duplex Stainless Steel Washer S32760 Duplex Stainless Steel Nuts S32760 Duplex Stainless Steel Bolts S32760 Duplex Stainless Steel Screw S32760 Duplex Stainless Steel Washer S32205 Duplex Stainless Steel Nuts S32205 Duplex Stainless Steel Bolts S32205 Duplex Stainless Steel Screw S32205 Duplex Stainless Steel Washer

 

 

General Queries While Buying Duplex Stainless Steel Fasteners

 

• High rejection rate
• No control on quality and testing
• Non availability
• Late deliveries
• Poor packaging/ Unprofessional Packing
• Poor after sales service
• Supply of wrong grades
• Material inconsistent with ASTM Standards
• Very hard material for use
• Poor surface finish
• No Mill test report
• Dubious Practices
• Lack of knowledge
• Product fails under high pressure
• High pricing of the goods due to supplier commission

 

 

Why Choose Fasteners & Fixtures While Buying Duplex Stainless Steel Fasteners ?

 

• High pressure sustainability
• Impeccable surface finish
• Product replacement warranty
• After sales support and service
• World class buying experience
• Very quick delivery
• Mill test report/ Digital Mill test report in accordance with EN10204 NACE 3.1, NACE 3.2
• 3rd Party inspection
• Government and Private Laboratory Testing
• Test certificate from ISO 17025 Standards Laboratory
• Same day shipping of the goods
• Highest stock in the country
• Stringent Quality Testing and Control