Duplex Steel Fastener Supplier, Exporter in India

Duplex Steel Fasteners, Duplex Steel Fasteners Supplier, Duplex Steel Bolts, Duplex Steel Fasteners Supplier in Mumbai, Duplex Steel Fasteners Supplier in India, Duplex Steel Screws, Duplex Steel Fasteners Exporter in Mumbai.

Tricon Steel & Alloys stands as a reputable duplex steel fastener manufacturer in India, catering to the diverse needs of industries with top-notch quality products. Renowned for their commitment to excellence, Tricon Steel & Alloys has emerged as a trusted name in the realm of duplex fasteners.

As one of the leading duplex steel bolts manufacturers in India, Tricon Steel & Alloys adheres to stringent quality standards in their production processes. The company's state-of-the-art manufacturing facilities ensure the creation of durable and corrosion-resistant duplex steel fasteners, suitable for a wide range of applications.

Tricon Steel & Alloys takes pride in being a reliable duplex steel Fasteners Supplier in India, serving industries such as petrochemical, chemical, and oil and gas. Their comprehensive product range includes duplex steel nuts, duplex steel screws, and duplex steel washers, all designed to withstand harsh environmental conditions and provide long-lasting performance. Customers can trust Tricon Steel & Alloys not only for the superior quality of their products but also for competitive duplex steel fasteners prices. The company strives to offer cost-effective solutions without compromising on quality, making it the go-to choice for businesses seeking reliable duplex stainless steel fasteners in India.

Table Of Content

What is Duplex Steel Fasteners
Duplex Steel Fasteners Specifications
Types Of Duplex Steel Fasteners
Application Industries Of DSS Fasteners

Duplex Steel Fasteners Manufacturer in Mumbai, Duplex Steel Hex Bolts, Duplex Steel Fasteners Manufacturer in India, Duplex Steel Fasteners Exporter, Duplex Steel Fasteners Exporter in India.

Duplex Steel Fasteners Chemical Composition

Duplex steel fasteners, known for their exceptional corrosion resistance and high mechanical strength, are typically composed of a dual-phase microstructure combining austenitic and ferritic stainless steels. The common chemical composition of duplex steel fasteners, with the widely used grade Duplex 2205 (UNS S32205), includes:

Chromium (Cr): A crucial element contributing to corrosion resistance, chromium forms a passive oxide layer on the surface of the duplex steel, protecting it from corrosive environments.

Nickel (Ni): Enhances the toughness and ductility of the material, providing high-strength properties.

Molybdenum (Mo): Improves the alloy's resistance to pitting and crevice corrosion, particularly in chloride-rich environments.

Nitrogen (N): Promotes the formation of the austenitic phase, contributing to the overall strength and corrosion resistance of the duplex steel.

Iron (Fe): The base element that forms the matrix of both austenitic and ferritic phases, providing structural integrity.

The specific chemical composition may vary depending on the duplex steel fasteners used. Super Duplex 2507 (UNS S32750) is another common grade with an extended chemical composition, typically containing higher amounts of chromium, nickel, molybdenum, and additional elements like tungsten and copper for enhanced corrosion resistance. These alloying elements collectively result in duplex steel fasteners with a balance of strength, corrosion resistance, and durability, making them ideal for demanding applications in industries such as oil and gas, chemical processing, and marine engineering. Manufacturers need to adhere to international standards such as ASTM or EN to ensure the desired chemical composition and performance of duplex steel fasteners.

Duplex Steel Fastener Mechanical Properties

Duplex steel fasteners exhibit excellent mechanical properties, making them well-suited for a variety of demanding applications. The mechanical properties are influenced by the dual-phase microstructure, combining characteristics of both austenitic and ferritic stainless steels. Commonly, Duplex 2205 (UNS S32205) and Super Duplex 2507 (UNS S32750) are used, and their mechanical properties include:

Tensile Strength: Duplex steel fasteners typically possess high tensile strength, providing the ability to withstand substantial loads without deformation or failure. Tensile strength values for duplex steel fasteners often exceed those of conventional austenitic stainless steels.

Yield Strength: The yield strength of duplex steel fasteners is notable, ensuring resistance to permanent deformation under applied stress. This property contributes to the durability and reliability of fastened components.

Elongation: Duplex steel exhibits good elongation, allowing for some degree of plastic deformation before fracture. This property is essential in situations where the material might bend or form.

Hardness: Duplex steel fasteners typically have a balanced hardness, offering a combination of toughness and wear resistance. The dual-phase structure contributes to maintaining hardness levels across a range of temperatures.

These mechanical properties make duplex steel fasteners suitable for use in aggressive environments, such as those found in the oil and gas industry, chemical processing plants, and marine applications. Manufacturers adhere to international standards like ASTM or EN to ensure consistent mechanical properties and the overall quality of duplex steel fasteners.

Equivalent Grades of Duplex Fasteners

Duplex fasteners are available in various grades, each with its unique chemical composition and properties. Equivalent grades refer to different international standards or designations that are considered comparable in terms of performance and characteristics. Two widely used grades for duplex fasteners are Duplex 2205 (UNS S32205) and Super Duplex 2507 (UNS S32750). Equivalent grades for these duplex stainless steel alloys can be found in various standards:

ASTM / ASME Standards:

Duplex 2205: Equivalent to ASTM/ASME A182 F51, ASTM/ASME A240, A276, A789, A790, and others.
Super Duplex 2507: Equivalent to ASTM/ASME A182 F53, ASTM/ASME A240, A276, A789, A790, and others.

EN Standards:

Duplex 2205: Equivalent to X2CrNiMoN22-5-3 (EN 1.4462) in European standards.
Super Duplex 2507: Equivalent to X2CrNiMoN25-7-4 (EN 1.4410) in European standards.

UNS Designations:

Duplex 2205: Also known by UNS S31803/S32205.
Super Duplex 2507: Also known by UNS S32750.

Other Standards:

Duplex 2205: Equivalent to 22Cr Duplex, URANUS 45N, SAF 2205, and more.
Super Duplex 2507: Equivalent to Zeron 100, URANUS 55N, SAF 2507, and others.

These equivalent grades provide a reference for users and manufacturers to ensure consistency in material selection and performance across different regions and industries. It's essential to consider the specific requirements of the application and adhere to the appropriate standards when selecting and using duplex steel fasteners to guarantee compatibility and reliability.

Specification of Duplex Fasteners

Duplex fasteners refer to a category of fastening components specifically engineered from duplex stainless steel, a corrosion-resistant and high-strength alloy. Duplex stainless steel is characterized by its dual-phase microstructure, combining austenitic and ferritic phases. This unique composition imparts excellent mechanical properties, making duplex fasteners suitable for applications demanding both strength and corrosion resistance.

The specifications of duplex fasteners typically adhere to international standards such as ASTM (American Society for Testing and Materials) or EN (European Norm). These standards define the chemical composition, mechanical properties, and other crucial aspects of the fasteners. Common duplex steel fasteners grades include Duplex 2205 (UNS S32205) and Super Duplex 2507 (UNS S32750).

Duplex steel manufacturers in India offer duplex steel fasteners in various forms, including bolts, nuts, screws, washers, and studs. These fasteners are available in various sizes, threading configurations, and coatings to suit different requirements. The specifications also detail the heat treatment processes, testing methods, and marking requirements to ensure the quality and reliability of duplex steel fasteners. Duplex Steel Hex Bolts and other variants are readily available from reputable duplex steel fasteners suppliers and duplex steel fasteners exporters, ensuring accessibility for industries worldwide.

Duplex Steel Fasteners Specifications

Standard	ASTM A479 / ASME SA479
Bolt / Screw Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Nuts Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Washers Size	M3 – M56 \| 3/6″ to 2″ \| Custom Sizes
Machine Screws Size	M1.6 – M12
Self Tapping Screw Size	No.2 – No. 14
Length	3 mm to 200 mm
Threads	UNF, BSW, BSF, METRIC, UNC, or as required
Fasteners	DIN : DIN 934, DIN 931, DIN 970, DIN 933 UTS : UNEF, NPT, UNC, UNS, UNF, NPTF ISO : JIS standards, ISO 4033, ISO 4032, ANSI – American National Standards Institute ASME B18.5 ANSI B 28.2.4 1M as per defined in ASME B16.5 standard Stud Bolt length ANSI B 18.2.4 2M as per defined in ASME B18.2.2 Hex nuts
Form	Hex, Threading, Square, Round as per Gauge Etc.
Raw materials Source	JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin,etc.
Threads Configuration	ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Certification	Dual Certified As per ASTM & ASME Codes
Dimensions	DIN 931, 933, 934, 7991, 976, 125, ASME B18.2.1, B18.3
Threads	Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically
Test Certificate	as per EN 10204 / 3.1 Manufacturer Test Certificate
Additional Certifications	PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified
Production Process	M24-M100: hot forging , M2-M24: Cold Froging, for custom-made connecting element machining and CNC
Types	Bolts, Nuts, Stud Bolts, Washers, Threaded Rod, Anchor Fasteners, Eye Bolt, Stud, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, Hexagon Castle Nuts, Hexagon Domed Cap Bolts, Hexagon Thin Nuts etc.

Duplex Steel Fasteners Manufacturing Process

Cold Forging

This initial process is a cold forging process used to produce a near net shape work billet. An important consideration in cold forging is the tendency for the bar tobolts Manufacturing Process buckle if its unsupported length to diameter ratio is too high. This ratio usually is limited to less than 4:1 but with suitable dies, therefore, cold forging is the most likely production method because bolts have a large head-to-shank ratio, they are longer than 1½ times their diameter, bolts have multiple diameters and finally require a geometrical shap

Thread rolling

The next process applied to the bottom of the work billet is a bulk deformation process known as "thread rolling". This type of cold-forging process is used bolts Manufacturing Processbecause cylindrical can easily have thread applied by rolling the work billet through two dies. The thread rolling process is usually chosen over machining because thread rolling provides higher production rates, more effective material usage, stronger thread due to work hardening and finally better fatigue resistance because the work billet undergoes compressive stresses during the rolling process.

Blackening and Galvanization

The final process induced on the now almost complete bolt is the application of an anti-corrosive layer, to stop oxidation. The usual process is called "blackening"; Either process chemically or physically coats the surface of ferrous metals, creating a strong barrier against humidity and corrosion. Hot Blackening is most popular & common blackening processes:

Hot Blackening

Hot blackening involves dipping the bolt into six different tanks. The bolt is usually "dipped" by automated part carriers for transportation between tanks. These tanks contain, in order, alkaline cleaner, water, caustic soda at 450°C to 500°C and finally the sealant, which is usually crude oil. The caustic soda bonds chemically to the surface of the metal, creating a porous base layer on the bolt.

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Types Of Duplex Steel Fasteners

Types of Duplex Fasteners

Duplex fasteners come in various types, each designed to serve specific purposes in different applications. The most common types of duplex fasteners include:

Duplex Bolts: These are threaded fasteners with a head and a shank, designed to be used with nuts for fastening two or more components together. Duplex bolts are available in different lengths, diameters, and grades to suit specific requirements.

Duplex Nuts: Nuts are used in conjunction with bolts to create a threaded fastening system. Duplex nuts are designed to provide secure and corrosion-resistant connections in challenging environments.

Duplex Screws: Similar to bolts but typically shorter, screws are threaded fasteners that can be used for a variety of applications. Duplex screws are corrosion-resistant and can be employed in situations where high strength and durability are essential.

Duplex Washers: Washers are flat, thin plates with a hole in the center. They are placed between a nut and a bolt or a screw and the surface it is fastened to. Duplex washers help distribute the load evenly and provide additional protection against corrosion.

Duplex Studs: Studs are fasteners without heads that have threads on both ends. They are often used in situations where a bolt and nut combination may be impractical. Duplex studs provide a robust and corrosion-resistant solution.

Duplex Anchor Bolts: These specialized bolts are designed for anchoring structures to concrete. Duplex anchor bolts provide both high strength and corrosion resistance, making them suitable for applications where stability is crucial.

Duplex Threaded Rods: Threaded rods are long, straight rods with threads along their entire length. They are often used to create custom fastening solutions and are available in various lengths and diameters.

The choice of the specific type of duplex fastener depends on the application requirements, environmental conditions, and the level of corrosion resistance and strength needed. Manufacturers produce duplex fasteners following international standards to ensure their quality and performance in demanding industries such as oil and gas, chemical processing, and maritime applications.

Duplex Steel Bolt

Duplex Steel Nut

DSS Screws

Duplex Steel Washers

Duplex Steel Stud Bolts

Duplex Steel Anchor Bolts

Duplex Steel Studs

Duplex Steel Threaded Rod

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