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Specialty Products / Superalloys & Metals / Specialty Stainless Steels / 2205 Duplex Stainless

Specialty Stainless Steels

2205 Duplex Stainless

2205 duplex stainless combines the strength benefits of ferritic-austenitic structure with strong resistance to chloride-related corrosion. It is widely used for pressure, process, and marine systems where 316L no longer provides enough pitting or SCC resistance. EQI supplies 2205 for plate, bar, and fabricated corrosion service.

  • UNS S31803 / S32205
  • Duplex stainless steel
  • Also known as: Duplex 2205

Request a Quote for 2205 Duplex Stainless

To get started, request a quote using the form below and we will get back to you. Please note that the quantity needed to quote or supply a specific alloy grade is typically 500-1,000 lbs, depending on the material.

Key Properties

  • High strength versus austenitic stainless grades
  • Excellent resistance to chloride stress-corrosion cracking
  • Good pitting and crevice corrosion resistance
  • Useful in marine, chemical, and oilfield service
  • Strong structural efficiency for pressure equipment

Composition

Chromium 21-23
Nickel 4.5-6.5
Molybdenum 2.5-3.5
Nitrogen 0.14-0.20
Iron Balance

Applications

Common industries and end-use applications include Chemical Processing, Marine & Shipbuilding, and Oil & Gas.

  • Pressure vessels and piping
  • Heat exchangers
  • Seawater and brackish water systems
  • Pulp and paper equipment
  • Oil and gas process hardware

Request a Quote

Whether you're sourcing raw material or need a manufactured component produced from a specialty alloy, the EQI team can help.

Why Choose EQI

Your Single Source for Specialty Alloys and Precision Manufacturing

EQI combines specialty alloy sourcing with manufacturing expertise, allowing customers to move from raw material supply to finished components through a single partner.

Our team supports OEMs and manufacturers by sourcing difficult-to-procure alloys and producing components for demanding applications.

Key Advantages

  • Global sourcing and foundry partnerships
  • Expertise in high-temperature and high-performance alloys
  • Precision machining and finished component manufacturing
  • Reliable lead times and consistent quality
  • Inventory management and just-in-time delivery programs
  • Engineering support for complex alloy applications