2205 duplex stainless steel rod introduction
2205 duplex stainless steel rod is a kind of stainless steel material composed of ferrite and austenite two phases, with excellent corrosion resistance, high strength and good welding performance, widely used in chemical industry, petroleum, offshore engineering and other fields.

Main parameter
Chemical composition (%) :

• Carbon (C): ≤0.03
• Silicon (Si): ≤1.00
• Manganese (Mn): ≤2.00
• Phosphorus (P): ≤0.030
• Sulfur (S): ≤0.020
• Chromium (Cr): 22.0-23.0
• Nickel (Ni): 4.5-6.5
• Molybdenum (Mo): 3.0-3.5
• Nitrogen (N): 0.14-0.20

Density: 7.8 g/cm³

Melting point: 1400-1450°C

Coefficient of thermal expansion: 13.7 x 10⁻⁶/°C (20-100°C)

Thermal conductivity: 15 W/m·K (20°C)

Resistivity: 0.80Ω ·mm²/m (20°C)

Performance characteristics

Corrosion resistance:

• Excellent resistance to chloride stress corrosion cracking.
• Good resistance to pitting and crevice corrosion.
• Performs well in acidic, alkaline and saline environments.

High strength:

• The yield strength is about twice that of ordinary austenitic stainless steel.
• High tensile strength, suitable for high stress environments.

Weldability:

• Good welding performance, no heat treatment after welding.
• Welded joints maintain high strength and corrosion resistance.

Fatigue strength:

• High fatigue strength, suitable for dynamic load environments.

Processing properties:

It can be formed by cold working and hot working, but the cold working hardening rate is higher.

Specification

• Diameter range: 5mm - 300mm
• Length: Usually 3000mm-6000mm, can also be customized.
• Surface treatment: black skin, pickling, polishing, etc.

Standard

• International standards: ASTM A276, ASTM A479, EN 10088-3
• Chinese standard: GB/T 1220, GB/T 4237

Application field

• Chemical industry: Used to manufacture reactors, heat exchangers, pipelines, etc.
• Oil and gas: Used in offshore platforms, pipelines, valves, etc.
• Marine engineering: Used in seawater treatment equipment, ship parts, etc.
• Paper industry: Used to manufacture bleaching equipment, storage tanks, etc.
• Environmental protection equipment: used for flue gas desulfurization equipment, wastewater treatment equipment, etc.
• Food processing: Used to manufacture food processing equipment, storage tanks, etc.

2205 duplex stainless steel rod with its excellent corrosion resistance, high strength and good weldability, is widely used in many industrial fields, especially suitable for high corrosion and high stress environments.