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DUPLEX STEEL 2205 BOLTS

Name: DUPLEX STEEL 2205 BOLTS
Brand: FITMART ALLOY & FASTENERS
Price: 249.0 INR
Availability: InStock

Price 249.0 INR/ Piece

Get a Price/Quote

MOQ : 50 Pieces

DUPLEX STEEL 2205 BOLTS Specification

Thickness
M6 to M36 (custom sizes available)

Dimension (L*W*H)
As per customer requirement / DIN standard dimensions

Thread Type
Metric, UNC, UNF, BSP

Diameter
6 mm to 36 mm (or as specified)

Head Type
Hex Head, Allen Head, Socket Head, CSK Head, Customized

Surface Treatment
Natural, Electro Galvanized, PTFE Coating

Heat Treatment
Solution Annealed

Length
10 mm to 500 mm (or as required)

Standard
ASTM A479, ASTM A182, DIN, ISO, BS, EN

Grade
DUPLEX STEEL 2205

Use
Industrial, Chemical processing, Marine applications, Oil & Gas

Elongation
25% min

Hardness
Max 290 HB

Finish
Bright, Black, Passivated as per client demand

Corrosion Resistance
Excellent resistance to general, pitting and crevice corrosion

Packaging
Wooden Box, Cartons, as per export standard

Non-magnetic
Yes, in annealed condition

Manufacturing Process
Forged & machined to precision

Tensile Strength
620 MPa min

Yield Strength
450 MPa min

Operating Temperature
-50C to 300C

Rust Proof
Yes

DUPLEX STEEL 2205 BOLTS Trade Information

Minimum Order Quantity
50 Pieces

Supply Ability
10000 Pieces Per Week

Delivery Time
1 Week

About DUPLEX STEEL 2205 BOLTS

Duplex 2205 bolts are high-strength, corrosion-resistant fasteners widely used in marine, chemical, and oil & gas industries. They outperform standard stainless steels like 316/317 by resisting chloride stress corrosion cracking, pitting, and crevice corrosion, making them ideal for harsh environments.

Key Specifications of Duplex 2205 Bolts

Material Grade: Duplex Stainless Steel 2205 (UNS S31803 / S32205, EN 1.4462, ASTM A182 F51/F60 equivalents)
Structure: Austenitic-Ferritic stainless steel (balanced mix for strength + corrosion resistance)
Mechanical Properties:

Tensile Strength: 620 MPa (higher than SS316)
Yield Strength: 450 MPa
Hardness: 290 HB
Impact Resistance: Excellent, even at low temperatures

Corrosion Resistance:

High resistance to chloride stress corrosion cracking
Strong protection against pitting and crevice corrosion
Good resistance to sulfide stress corrosion

Standards Available: ASME, DIN, ISO, ASTM, and custom dimensions

Common Uses of Duplex 2205 Bolts

Marine Industry: Shipbuilding, offshore platforms, subsea equipment (resists seawater corrosion).
Chemical Processing Plants: Handles aggressive chemicals and high-pressure environments.
Oil & Gas Industry: Pipeline flanges, pressure vessels, and drilling equipment.
Desalination Plants: Withstands chloride-rich environments.
Structural Applications: Bridges, heavy machinery, and load-bearing assemblies requiring high fatigue resistance.

Comparison: Duplex 2205 vs SS316 Bolts

Why Choose Duplex 2205 Bolts?

Stronger than 300-series stainless steels (like 316/317).
Longer service life in aggressive environments.
Cost-effective in the long run due to reduced maintenance and replacement needs.
Good weldability and workability, making them versatile for fabrication.

Exceptional Corrosion Resistance

DUPLEX STEEL 2205 BOLTS offer excellent resistance to general, pitting, and crevice corrosion. This makes them highly suitable for challenging industrial environments, especially where exposure to chemicals or seawater is common. Their advanced metallurgy provides durability in corrosive settings, ensuring long-term performance and reliability.

Superior Mechanical Properties

With a minimum tensile strength of 620 MPa and a yield strength of at least 450 MPa, these bolts ensure structural integrity under high-stress applications. The minimum elongation of 25% and a maximum hardness of 290 HB further support resilience and flexibility. All bolts undergo solution annealing for enhanced toughness.

Versatile Applications and Customization

From marine environments to oil & gas and chemical processing industries, DUPLEX STEEL 2205 BOLTS are available in multiple thread types, head styles, and dimensions as per DIN or customer specifications. Finishing options like passivation, PTFE coating, or electro galvanizing can also be tailored to specific needs.

FAQ's of DUPLEX STEEL 2205 BOLTS:

Q: How do DUPLEX STEEL 2205 BOLTS provide corrosion resistance in harsh environments?

A: These bolts are crafted from duplex stainless steel, which exhibits a unique microstructure that resists general, pitting, and crevice corrosion far better than standard grades. This makes them especially suitable for chemical processing plants, marine applications, and oil & gas projects where aggressive corrosion conditions prevail.

Q: What manufacturing processes ensure the precision and durability of these bolts?

A: DUPLEX STEEL 2205 BOLTS are manufactured through forging and precise machining. After forming, they undergo solution annealing heat treatment to optimize their mechanical properties and ensure a rust-proof, robust finish suitable for demanding industrial uses.

Q: When should I choose DUPLEX STEEL 2205 BOLTS over conventional stainless steel fasteners?

A: Choose these bolts when applications demand higher mechanical strength combined with superior resistance to localized corrosion, such as in marine, chemical processing, or oil & gas environments. Their non-magnetic properties in the annealed state are also a key advantage for specialized industry requirements.

Q: Where are DUPLEX STEEL 2205 BOLTS commonly used?

A: They are extensively used in industrial, marine, oil & gas, and chemical processing sectors-anywhere high strength and outstanding corrosion resistance are required. Their customizable features make them adaptable across a variety of installation environments.

Q: What finishes and surface treatments are available for these bolts?

A: Finishing options include bright, black, or passivated surfaces, along with additional treatments like natural finish, electro galvanized, and PTFE coating. These treatments enhance corrosion resistance and appearance, and can be customized based on client demands.

Q: How are DUPLEX STEEL 2205 BOLTS packaged for export or delivery?

A: Bolts are packed in wooden boxes or cartons, strictly adhering to export standards. Customized packaging solutions are available upon request to ensure safe transportation and delivery.

Q: What are the main benefits of using DUPLEX STEEL 2205 BOLTS?

A: Users benefit from their high strength, excellent corrosion resistance, non-magnetic properties, customizable dimensions and finishes, and adherence to international standards, guaranteeing performance in critical and corrosive service conditions.

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