Duplex Stainless Steel 2205

Product Detail

Common Trade Names: 2205, UNS S32205, 00Cr22Ni5Mo3N,W.Nr 1.4462

 Duplex stainless steel 2205 alloy is a duplex stainless steel composed of 22% chromium, 2.5% molybdenum and 4.5% nickel-nitrogen alloy. It has high strength , good impact toughness and good overall and local stress corrosion resistance.The yield strength of 2205 duplex stainless steel is more than twice that of ordinary austenitic stainless steel . This feature enables designers to reduce weight when designing products, making this alloy more cost-effective than 316 and 317L. This alloy is particularly suitable for the temperature range of -50°F/+600°F

Duplex Stainless Steel 2205 Chemical Composition
chemical composition C Si Mn P S Cr Ni Mo N
standard ≤0.03 ≤1.00 ≤2.00 ≤0.04 ≤0.03 21.0~24.0 4.5~6.5 2.5~3.5 0.08~0.2
general 0.025 0.6 1.5 0.026 0.001 22.5 5.8 3.0 0.16
Duplex Stainless Steel 2205 Physical Properties
7.8 g/cm³
Melting point
2525- 2630°F
Duplex Stainless Steel 2205 Mechanical Properties

Alloy status

Tensile strength
Rm N/mm²

Yield strength

RP0.2 N/mm²

A5 %

Brinell hardness HB








Duplex Stainless Steel 2205 Standards and Specifications

ASME SA 182, ASME SA 240, ASME SA 479, ASME SA 789, ASME SA 789 Section IV Code Case 2603

ASTM A 240, ASTM A 276, ASTM A 276 Condition A, ASTM A 276 Condition S, ASTM A 479, ASTM A 790
NACE MR0175/ISO 15156

Duplex Stainless Steel 2205 Available Products in Sekonic Metals

Inconel 718 bar,inconel 625 bar

Steel 2205 Bars & Rods

Round bars/Flat bars/Hex bars,  Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts

welding wire and spring wire

Steel 2205 Wire

Supply in welding wire and spring wire in coil form and cut length.

Sheet & Plate

Steel 2205 sheet & plate

Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm  to 100mm.

Steel 2205 seamless tube & Welded pipe

Standards size and  customized dimension can be produced by us with small tolerance

inconel strip,invar stirp,kovar stirp

Steel 2205 strip & coil

Soft condition and hard condition with AB bright surface, width up to 1000mm

Fasterner & Other Fitting

Steel 2205 Fasteners

This materials  in forms of Bolts,screws,flanges and other fasterners, according to clients specification.

Why Duplex Stainless Steel 2205 ?

1) The yield strength is more than twice that of ordinary austenitic stainless steel, and it has the necessary requirements for forming
Sufficient plasticity. The wall thickness of storage tanks or pressure vessels made of duplex stainless steel is 30-50% less than that of commonly used austenite, which is beneficial to reduce costs.
2) It has excellent resistance to stress corrosion cracking. Even the duplex stainless steel with the lowest alloy content has higher resistance to stress corrosion cracking than austenitic stainless steel, especially in an environment containing chloride ions. Stress corrosion is a prominent problem that is difficult to solve for ordinary austenitic stainless steel.
3) The corrosion resistance of 2205 duplex stainless steel, which is most commonly used in many media, is better than ordinary 316L austenitic stainless steel, while super duplex stainless steel has extremely high corrosion resistance. In some media, such as acetic acid and formic acid It can even replace high-alloy austenitic stainless steel and even corrosion-resistant alloys .
4) It has good local corrosion resistance. Compared with austenitic stainless steel with the same alloy content, its wear corrosion resistance and fatigue corrosion resistance are better than austenitic stainless steel.
5) The coefficient of linear expansion is lower than that of austenitic stainless steel , which is close to that of carbon steel. It is suitable for connection with carbon steel and has important engineering significance, such as the production of composite plates or linings.
6) Whether under dynamic or static load conditions, it has a higher energy absorption capacity than austenitic stainless steel. This is for structural parts to cope with sudden accidents such as collisions and explosions. Duplex stainless steel has obvious advantages and has practical application value.

Duplex Stainless Steel 2205  Application field:

Pressure vessels, high-pressure storage tanks, high-pressure pipes, heat exchangers (chemical processing industry).
• Oil and gas pipelines, heat exchanger fittings.
 Sewage treatment system.
• Pulp and paper industry classifiers, bleaching equipment, storage and processing systems.
• Rotary shafts, press rolls, blades, impellers, etc. under high-strength and corrosion-resistant environments.
• Cargo boxes of ships or trucks
• Food processing equipment

Our company Products Forms

Bars & Rods

Inconel / Hastelloy/ Monel/ Haynes 25/ Titanium

Seamless Tube & Welded Tube

Nickel/ Titanium Alloy tubes, U-bend /heat exchange tube

Bolt & screw

Inconel 601/ Hastelloy C22/Inconel x750/Inconel 625 ect

Sheet & Plates

Hastelloy/Inconel/ Incoloy/ Cobalt/Tianium

Strip & Coil

Hastelloy/Inconel/ invar/ soft magnetic Alloys ect


Inconel 718/Inconel x750/ Nimonic 80A

Wire & Welding

Cobalt Alloy wire, Nickel alloy wire,Tianium Alloy wire

Flanges & fastners

Monel 400/ Hastelloy C276/ Inconel 718/ Titanium

Oil Tube Hanger

Inconel x750/ Inconel 718 /Monel 400 ect

Call us today at 0086 15921454807 or email info@sekonicmetal.com

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