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Duplex Steel UNS S31803 Fasteners

Name: Duplex Steel UNS S31803 Fasteners
Brand: Skyland Metal & Alloys Inc.
Price: 500.0 INR
Availability: InStock

Price 500.0 INR/ Piece

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MOQ : 1 Piece

Duplex Steel UNS S31803 Fasteners Specification

Temper
Annealed / Cold Worked

Tensile Strength
Min 620 MPa

Hardness
Min 290 HB (Brinell)

Coating Type
As requested (e.g., zinc, cadmium, PTFE, plain)

Width
Customizable as per requirement

Size
Standard & customized sizes available

Diameter
M6 to M100 (or as per specification)

Heat Resistance
Yes

Recyclable
Yes

Material Composition %
Cr 21-23%, Ni 4.5-6.5%, Mo 2.5-3.5%, N 0.08-0.20%, Fe balance

Corrosion Resistant
Excellent Resistance to pitting and crevice corrosion

Product Form
Bolt, Nut, Washer

Product Name
Duplex Steel UNS S31803 Fasteners

Steel Type
Duplex Stainless Steel

Steel Product Type
Industrial Fasteners

Grade
UNS S31803

Thickness
Standard sizes from M6 to M100 (custom on request)

Shape
Hex Bolts, Nuts, Washers, Screws

Steel Standard
ASTM A182 / A479, ASME, EN, ISO

Surface
Passivated / Plain / Zinc Plated / Hot-Dip Galvanized

Composition
22% Chromium, 5-6% Nickel, 3% Molybdenum, balance Iron

Application
Petrochemical, Chemical, Oil & Gas, Marine, Pulp & Paper, Power Plants, Construction, Engineering Industries

Dimension (L*W*H)
As per DIN/ISO standard or client specification

Weight
Varies by size and type (available on request)

Color
Metallic Silver

Material Grade
UNS S31803

Finish Type
Bright finish

Usage
Used in corrosive and high-pressure environments

Magnetic Properties
Slightly magnetic due to duplex structure

Eco-Friendly
RoHS Compliant

Rust Proof
Yes

Standards Compliance
ASME B18.2.1, DIN 933/934, ISO 4032, 4017

Testing
UT, mpi, hardness, PMI, IGC, and corrosion tests as per standard

Manufacturing Process
Forged / Machined / Cold Formed

Package Type
Export worthy, wooden box or carton

Thread Type
Metric, UNC, UNF, BSW, BSF

Operating Temperature Range
-50C to +300C

Form Availability
Full Threaded, Half Threaded, Flange, Socket Cap, Hex Head, Studs, U-Bolts, Eye Bolts

Density
7.8 g/cm3

Lead Time
Typically 7-15 days based on order quantity

Duplex Steel UNS S31803 Fasteners Trade Information

Minimum Order Quantity
1 Piece

Delivery Time
7 Days

Duplex Steel UNS S31803 Fasteners About

Duplex Steel UNS S31803 Fasteners are made from a ferritic-austenitic stainless steel alloy containing 22% chromium and 4 - 6% nickel balanced with additional amounts of molybdenum, manganese, nitrogen, and silicon. This incredible blend of elements allows Duplex Steel UNS S31803 Fasteners to have superior strength and excellent corrosion resistance compared to other commonly available fasteners. Furthermore, the high chromium content allows the surface layer of the fastener to form an insulation barrier against corrosive agents, making them extremely dependable when used outdoors or in humid environments.

Engineered for Extreme Environments

Duplex Steel UNS S31803 Fasteners are crafted to withstand challenging settings where corrosion and strength are key factors. These fasteners excel in a wide range of temperatures, from -50C up to 300C, making them ideal for critical infrastructure and industrial operations.

Robust Quality and Versatility

Constructed from duplex stainless steel, each fastener undergoes strict quality control, including UT, MPI, and corrosion resistance tests. With availability in standard and custom dimensions, they offer versatility in design and application. The selection includes full and half threaded types, hex heads, flange, socket cap, and specialty bolts.

Compliance and Eco-Conscious Manufacturing

All Duplex Steel UNS S31803 Fasteners conform to global standards including ASTM A182/A479, EN, ISO, and DIN, ensuring seamless integration into projects worldwide. With RoHS compliance, these fasteners are environmentally responsible, fully recyclable, and safe for diverse industry requirements.

FAQ's of Duplex Steel UNS S31803 Fasteners:

Q: How are Duplex Steel UNS S31803 Fasteners manufactured?

A: These fasteners are produced using forging, machining, or cold forming processes. Each method ensures optimal structural integrity and precise dimensional accuracy based on application needs and specifications.

Q: What types of threads and forms are available for these fasteners?

A: Fasteners are offered in Metric, UNC, UNF, BSW, and BSF thread types. Available forms include hex bolts, nuts, washers, screws, studs, U-bolts, eye bolts, and can be full or half threaded, flange, or socket cap as required.

Q: When can I expect delivery after placing an order?

A: Typical lead time for delivery is 7 to 15 days, depending on the order quantity and any customization required for dimensions, finish, or packaging.

Q: Where can Duplex Steel UNS S31803 Fasteners be used?

A: These fasteners are widely used in petrochemical, chemical, oil & gas, marine, pulp & paper, power generation, construction, and engineering industries, particularly where high strength and corrosion resistance are essential.

Q: What testing processes ensure the quality of these fasteners?

A: Each batch undergoes comprehensive testing including ultrasonic (UT), magnetic particle inspection (MPI), hardness, PMI, intergranular corrosion (IGC), and corrosion resistance tests, adhering to international standards.

Q: What benefits does the Duplex Steel UNS S31803 composition provide?

A: The duplex structure combines high strength and superior corrosion resistance-thanks to 22% chromium, 5-6% nickel, and 3% molybdenum-making fasteners suitable for aggressive, corrosive, or high-pressure environments.

Q: How are these fasteners packaged for safe transport and export?

A: Fasteners are packed in export-worthy wooden boxes or cartons, ensuring protection against handling damage and corrosion during shipping. Packaging methods comply with international export requirements.

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