Duplex Steel Fastener

Duplex Steel Fastener Specification

Hardness
240 HB - 290 HB

Capacity
High mechanical capacity suitable for heavy-duty applications

Grade
Duplex 2205, Duplex 31803

Load Capacity
Up to 18,000 kg depending on dimension

Torque
Up to 2000 Nm and as per application

Standard
ASTM A479, ASTM A182, ASTM F51

Head Type
Hex Head, Socket Head, Pan Head, Customized

Finish
Bright, Matte, Zinc Coated

Shape
Round, Hexagonal, Customized shapes

Surface Treatment
Passivated, Electro Polished, Hot Dip Galvanized

Thread Type
Metric, UNC, UNF, BSW, custom thread types

Drive Type
Hex, Slotted, Phillips, Allen

Corrosion Resistant
Yes, highly resistant to corrosion and chloride-induced stress

Thickness
Up to 100 mm

Diameter
M6 to M64 (Custom sizes available)

Tensile Strength
750 MPa - 900 MPa

Feature
Excellent mechanical strength, duplex microstructure, high resistance to pitting and stress corrosion

Fasteners Type
Bolts, Nuts, Screws, Studs, Washers

Material
Duplex Stainless Steel

Tolerance
0.01 mm

Application
Marine, Chemical, Petrochemical, Oil & Gas, Structural, Offshore Platforms

Packaging Type
Wooden boxes, Cartons, Bubble wrap

Availability
Ready Stock, Made to order

Magnetic Properties
Slightly magnetic due to duplex microstructure

Temperature Range
-50C to +300C

Elongation
Minimum 25%

Color
Natural metallic silver

Rust Proof
Yes, due to superior alloy content

Hydrogen Embrittlement Resistant
Yes

Yield Strength
450 MPa

Weldability
Good, suitable for most industrial welding processes

Density
7.8 g/cm3

Life Expectancy
25+ years in harsh environments

Seismic Approved
Yes, for infrastructure use as required

Manufacturing Process
Cold Forged, Machined, Hot Forged

Duplex Steel Fastener Trade Information

Minimum Order Quantity
100 Pieces

Delivery Time
10-15 Days

About Duplex Steel Fastener

Experience elite engineering with our Duplex Steel Fasteners, crafted for transcendent performance across diverse industrial domains. Featuring potent mechanical strength (Tensile 750-900 MPa, Yield 450 MPa, Hardness 240-290 HB), each unit is manufactured via cold/ hot forging and machining for uncommon precision (Tolerance: 0.01 mm). These rust-proof, hydrogen embrittlement-resistant fasteners offer unmatched longevity-life expectancy exceeding 25 years even in harsh conditions. Available in exclusive Duplex 2205 and 31803 grades, our duplex microstructure guarantees seismic approval and superior corrosion resistance, all at the lowest price for such high-caliber reliability and safety. Ready stock and customized solutions available.

Versatile Usage Across Extreme Applications

Duplex Steel Fasteners excel in marine, petrochemical, oil & gas, chemical, structural, and offshore platform environments. With their high resistance to pitting, stress corrosion, and hydrogen embrittlement, these fasteners are suitable for critical infrastructure, seismic zones, and environments with high chloride presence. They deliver robust load capacities and adaptability, making them ideal for both standard and bespoke engineering projects requiring mechanical excellence and peace of mind in aggressive operational settings.

Easy Payment and Dependable Delivery

We offer streamlined purchasing options for Duplex Steel Fasteners-choose from the latest stock ready for prompt dispatch, or handover bespoke orders tailored to your precise specifications. Secure your order with flexible payment terms, while packaging ensures optimal safety: each batch is delivered in wooden boxes, cartons, and bubble wrap. Expect on-time delivery and a seamless transaction process, ensuring your projects remain on schedule with our exclusive offers and reliable fulfillment.

FAQ's of Duplex Steel Fastener:

Q: How are Duplex Steel Fasteners manufactured to ensure unmatched quality?

A: Our fasteners are produced using cold forging, machining, and hot forging, adhering to ASTM standards. Each piece undergoes passivation, electropolishing, or zinc coating for superior finish and durability, ensuring performance in demanding environments.

Q: What makes these fasteners suitable for marine and petrochemical applications?

A: Duplex Steel Fasteners possess high resistance to pitting, stress corrosion, and chloride-induced cracking, making them ideal for marine and aggressive chemical environments where conventional fasteners often fail.

Q: Where can I use Duplex Steel Fasteners for optimal performance?

A: They are perfect for marine structures, offshore platforms, oil & gas infrastructure, chemical plants, and any environment requiring strong, corrosion-resistant fastening solutions with seismic approval and long life expectancy.

Q: What is the benefit of the duplex microstructure in these fasteners?

A: The duplex microstructure combines austenitic and ferritic phases, offering enhanced mechanical strength, high corrosion resistance, and slight magnetic properties-resulting in extended durability and reliability for critical applications.

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

A: Delivery times vary: ready stock fasteners can be dispatched immediately, while made-to-order specifications are fulfilled promptly as per your project timeline, ensuring efficient handover and minimal downtime.