Duplex Steel S32205 Hex Bolts

Stainless Steel Duplex 2205, also known as 1.4462, is a type of duplex stainless steel that is characterized by its high strength and excellent corrosion resistance. Hex bolts made from Duplex 2205 are widely used in various industries and applications due to their unique combination of properties. Here are some key features, corrosion resistance, applications, and machining considerations for Duplex 2205 hex bolts:

Features:

• High Strength: Duplex 2205 is a duplex stainless steel, which means it has a two-phase microstructure consisting of austenite and ferrite. This gives it higher strength compared to austenitic stainless steels like 304 or 316.
• Corrosion Resistance: Duplex 2205 offers excellent corrosion resistance, particularly in environments where chloride ions are present. It is highly resistant to stress corrosion cracking and pitting corrosion, making it suitable for use in aggressive and corrosive environments.
• Good Toughness: This material has good toughness and ductility, which is important for applications that require resistance to impact and vibration.
• Good Weldability: Duplex 2205 is generally considered weldable with appropriate precautions. Welding procedures should be followed to minimize the risk of precipitation of harmful phases that can reduce corrosion resistance.
• Low Thermal Expansion: Duplex 2205 has a low coefficient of thermal expansion, which means it remains dimensionally stable at varying temperatures.

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• UNS

  S32205

• WNR

  1.4462

• ASTM

  ASTM A479 / SA479

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Corrosion Resistance: Duplex 2205 hex bolts offer excellent resistance to:

• Chloride Stress Corrosion Cracking (SCC): This makes them suitable for applications in marine environments and the petrochemical industry.
• Pitting and Crevice Corrosion: The alloy's resistance to pitting and crevice corrosion is superior to that of standard austenitic stainless steels.
• General Corrosion: It exhibits good resistance to general corrosion in various acidic and alkaline environments.

Applications: Duplex 2205 hex bolts are used in a wide range of industries and applications, including:

• Oil and Gas Industry: Used in offshore drilling equipment, pipelines, and subsea applications due to its corrosion resistance.
• Chemical Processing: Suitable for vessels, tanks, and equipment used in the chemical industry.
• Marine Industry: Used in shipbuilding and marine equipment due to its resistance to saltwater corrosion.
• Pulp and Paper Industry: Used for parts exposed to aggressive chemicals in the paper manufacturing process.
• Power Generation: Used in power plants and equipment where high strength and corrosion resistance are required.
• Construction: Duplex 2205 bolts are used in construction and infrastructure projects, especially in coastal and corrosive environments.

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Specifications of Duplex Steel S32205 Hex Bolts

Machining: Machining Duplex 2205 can be more challenging compared to austenitic stainless steels due to its higher strength. Some considerations for machining include:

• Use of sharp tools and low cutting speeds.
• Adequate cooling to prevent overheating and work-hardening.
• Proper lubrication and chip evacuation.
• Preheating may be required for some machining operations.

Equivalent Grades Of Duplex Steel S32205 Hex Bolts

Chemical Composition of Duplex Steel S32205 Hex Bolts

Mechanical Properties of DSS UNS S32205 Hex Bolt

Types of Duplex Steel 2205 Hex Bolt