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Duplex Steel S31803 Fasteners

What is Duplex UNS S31803, and what are its properties?

Duplex UNS S31803 is a type of duplex stainless steel with a balanced combination of ferrite and austenite phases in its microstructure. This composition imparts exceptional mechanical and corrosion-resistant properties to the material. The primary elements in Duplex UNS S31803 are chromium, nickel, molybdenum, and nitrogen, which contribute to its high strength, excellent resistance to pitting and crevice corrosion, and good weldability.

This duplex grade offers improved resistance to stress corrosion cracking, making it suitable for applications in aggressive environments such as marine, oil and gas, chemical processing, and offshore industries. The superior properties of Duplex UNS S31803 make it an attractive choice for fasteners, as it provides a reliable and durable solution in demanding and corrosive environments.

Table Of Content

Manufacturing Process Of Duplex Steel S31803 Fasteners
Duplex S31803 Bolts and Nuts Specification
Duplex Steel S31803 Fasteners Equivalent Grades
Chemical Composition of Duplex S31803 Fasteners
Mechanical Properties of Duplex S31803 Fasteners
Types Of Duplex Steel S31803 Fasteners
Other Types Of Duplex Steel S31803 Fasteners
UNS S31803 Fasteners Price, Dimension, Weight
Duplex S31803 Fasteners Industrial Application
Export & Supply Destination of Duplex Steel S31803 Fasteners

What are the applications of Duplex UNS S31803 fasteners?

Duplex UNS S31803 fasteners find various applications across various industries due to their exceptional properties. These fasteners are extensively used in oil and gas, chemical processing, marine, and offshore industries. Duplex UNS S31803 fasteners are commonly employed in critical applications such as pipelines, subsea equipment, and offshore platforms in the oil and gas sector. Their excellent resistance to corrosion and high mechanical strength make them well-suited for withstanding the harsh conditions encountered in these environments.

In the chemical processing industry, these fasteners are utilized in equipment and structures exposed to corrosive chemicals and high temperatures. Similarly, in marine applications, Duplex UNS S31803 fasteners are preferred for their resistance to saltwater corrosion and ability to withstand the challenging conditions encountered in marine environments. The versatility, durability, and corrosion resistance of Duplex UNS S31803 fasteners makes them a reliable choice for critical applications where strength and resistance to corrosion are essential factors.

Manufacturing Process Of Duplex Steel S31803 Fasteners

Forging

Forging is a manufacturing process that involves shaping metal through the application of force.

Machining & Drilling

Both machining and drilling play crucial roles in the manufacturing of components across a wide range of industries.

Heat Treatment

Heating the metal to a temperature below the critical range and then slow cooling

Quality Control & Marking, Identification

Quality control and marking are essential aspects of manufacturing and production processes across metal industries.

Packaging and Delivery

To reach their destination in pristine condition, we employ careful packaging techniques.

Duplex Steel S31803 Bolts and Nuts Specification

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
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.