DUPLEX STAINLESS STEEL

Alloy 2205

Alloy 2205 is listed in the DUPLEX STAINLESS STEEL material family. The reference data below should be checked against the governing product specification, product form and delivery condition before selection or certification.

Alloy 2205
MATERIAL INTRODUCTION

Alloy 2205

The reference chemistry table for Alloy 2205 lists Carbon (C): 0.030% Max; Manganese (Mn): 2.00% Max; Phosphorus (P): 0.030% Max; Sulfur (S): 0.020% Max. Confirm exact limits and analysis tolerances against the governing standard and product form.

The mechanical-property table for Alloy 2205 lists Tensile Strength: 655 Minimum MPa; Yield Strength: 450 Minimum MPa; Elongation: 25 Minimum %; Hardness: 293 Maximum BHN. These are reference entries; supplied condition, dimensions, test method and governing specification control the requirements, and the figures are not design allowables.

Werkstoff / EN cross-reference for Alloy 2205: 1.4462. This comparison does not guarantee interchangeability; confirm chemistry, product form and condition against the governing specification.

View Technical Information →
TECHNICAL INFORMATION

Material Identification

Standard identification and material designation information for Alloy 2205.

Material Alloy 2205
UNS Number S31803 / S32205
Werkstoff Number 1.4462
Material Type Duplex Stainless Steel
MATERIAL PROPERTIES

Chemical Composition

The reference chemistry table lists Carbon (C): 0.030% Max; Manganese (Mn): 2.00% Max; Phosphorus (P): 0.030% Max; Sulfur (S): 0.020% Max. Confirm the governing standard, product analysis tolerances and product form before ordering.

Element Symbol Composition
Carbon C 0.030% Max
Manganese Mn 2.00% Max
Phosphorus P 0.030% Max
Sulfur S 0.020% Max
Silicon Si 1.00% Max
Chromium Cr 22.00 – 23.00%
Nickel Ni 4.50 – 6.50%
Molybdenum Mo 3.00 – 3.50%
Nitrogen N 0.14 – 0.20%
Iron Fe Balance
PERFORMANCE DATA

Mechanical Properties

The table reports Tensile Strength: 655 Minimum MPa; Yield Strength: 450 Minimum MPa; Elongation: 25 Minimum %; Hardness: 293 Maximum BHN as reference data for Alloy 2205. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.

Property Value Unit
Tensile Strength 655 Minimum MPa
Yield Strength 450 Minimum MPa
Elongation 25 Minimum %
Hardness 293 Maximum BHN
MATERIAL DATA

Physical Properties

Density 7.80 g/cm³
Elastic Modulus 200 GPa
Thermal Conductivity Approx. 15 W/m·K
Specific Heat Approx. 500 J/kg·K
Electrical Resistivity Approx. 0.80 µΩ·m
WHY SELECT THIS MATERIAL

Material Characteristics

Alloy 2205 provides a combination of high mechanical strength, excellent corrosion resistance and reliable fabrication characteristics.

01

High Mechanical Strength

Provides approximately twice the yield strength of many conventional austenitic stainless steels.

02

Excellent Corrosion Resistance

Offers excellent resistance to general corrosion, pitting and crevice corrosion.

03

Stress Corrosion Resistance

Provides high resistance to stress corrosion cracking in chloride-bearing environments.

04

Good Weldability

Can be welded using appropriate procedures designed for duplex stainless steels.

Alloy 2205 Bolting Products

INDUSTRIAL USE

Typical Applications

Alloy 2205 is selected for applications requiring high strength, excellent corrosion resistance and reliable performance in demanding environments.

01

Oil & Gas

Offshore platforms, piping systems and equipment exposed to corrosive environments.

02

Chemical Processing

Pressure vessels, storage tanks and corrosion-resistant process equipment.

03

Marine & Offshore

Components exposed to seawater and chloride-containing environments.

04

Heat Exchangers

Equipment requiring high strength and resistance to corrosion and erosion.

ENGINEERING GUIDE

Engineering Considerations

Corrosion Environment

Consider chloride concentration, chemical exposure and operating temperature when selecting Alloy 2205.

Fabrication

Appropriate forming and welding procedures should be used to maintain the desired duplex microstructure and material performance.

Mechanical Requirements

The high mechanical strength of Alloy 2205 can allow reduced material thickness in suitable engineering applications.

COMMON QUESTIONS

Frequently Asked Questions

What is the Werkstoff number for Alloy 2205?

The commonly listed Werkstoff / EN cross-reference for Alloy 2205 is 1.4462. Treat this as a grade comparison, not a guarantee of interchangeability. Verify chemistry, product form, condition and governing specification against the supplier certificate before substitution.

What are the main advantages of Alloy 2205?

Its main advantages include high mechanical strength, excellent corrosion resistance and resistance to stress corrosion cracking.

Where is Alloy 2205 used?

It is commonly used in oil and gas, chemical processing, marine and offshore equipment, pressure vessels and heat exchangers.

ENGINEERING SUPPORT

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