Huaxiao Metal offers high-performance 2205 duplex stainless steel with a PREN > 32 and yield strength ≥ 450 MPa. Perfectly balancing corrosion resistance and mechanical strength, our 2205 material is the ideal cost-saving alternative to 316L in marine and chemical environments.
- Availability: Sheets, Plates, Coils, and Pipes.
- Certification: ASTM A240, ASME SA240, EN 10088-2.
- Services: Custom cutting, finishing, and global fast shipping.
📩 Contact Huaxiao Metal today to get the latest 2205 stainless steel price and stock information.
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Huaxiao Capacity about Duplex Ss 2205 Products Specifications
| Item | Details |
|---|---|
| Material | 2205 Duplex Stainless Steel |
| UNS | S31803 / S32205 |
| EN | 1.4462 |
| Standard | ASTM A240 |
| Density | 7.8 g/cm³ |
| Yield Strength | ≥450 MPa |
| Tensile Strength | ≥620 MPa |
| Supply Form | Plate, Sheet, Coil, Bar, Tube, Pipe |
Available Product Forms
Huaxiao Metal supplies 2205 duplex stainless steel in multiple forms to meet different industrial requirements.
2205 Duplex Stainless Steel Sheet & Plate
- 2205 Duplex Stainless Steel Plate
- 2205 Duplex Stainless Steel Sheet
2205 Duplex Stainless Steel Coil
- Hot Rolled Duplex Ss 2205 Coil
- Cold Rolled Duplex Ss 2205 Coil
2205 Duplex Stainless Steel Strip
- Precision Duplex Ss 2205 Strip
- Hot Rolled Duplex Ss 2205 Strip
- Cold Rolled Duplex Ss 2205 Strip
2205 Duplex Stainless Steel Pipe & Tube
- Duplex Stainless Steel 2205 Welded Pipe & Tube
- Duplex Stainless Steel 2205 Seamless Pipe & Tube
2205 Duplex Stainless Steel Wire & Mesh
- Duplex Stainless Steel 2205 Wire
- Duplex Stainless Steel 2205 Wire Mesh
2205 Duplex Stainless Steel Bar
- Duplex Stainless Steel Grade 2205 Hex Bar
- Duplex Stainless Steel Grade 2205 Flat Bar
- Duplex Stainless Steel Grade 2205 Angle Bar
- Duplex Stainless Steel Grade 2205 Square Bar
- Duplex Stainless Steel Grade 2205 Round Bar
- Duplex Stainless Steel Grade 2205 Round Bar
- Duplex Stainless Steel Grade 2205 Hollow Bar
What Is 2205 Duplex Stainless Steel (UNS S31803 / S32205)?
Duplex stainless steel 2205 is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5% to 6% nickel alloy stainless steel, also known as x2crnimon22-5-3. It is the most widely used duplex stainless steel grade. Its microstructure contains both austenite and ferrite phases and has excellent strength and corrosion resistance. Especially the high yield strength is twice that of standard austenitic stainless steel grades.
Why Choose 2205 Duplex Steel?
Cost Savings: High yield strength (≥450 MPa) allows for thinner sections, reducing material weight and shipping costs by up to 20%.
Zero Maintenance in Harsh Media: Exceptional resistance to pitting and crevice corrosion in chloride-containing environments (Seawater, Brine).
Dual-Grade Certification: We supply S31803 and S32205 dual-certified materials to meet the highest engineering standards globally.
Reliable Supply Chain: Huaxiao maintains a 5,000-ton inventory of duplex steel, ensuring a 3-7 day lead time for standard sizes.
2205 Duplex Stainless Steel Data Sheet
Mechanical Properties of Duplex Stainless Steel Grade 2205
| Grade | Tensile Str (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness-Rockwell C (HR C) | Hardness-Brinell (HB) |
|---|---|---|---|---|---|
| 2205 | 621 | 448 | 25 | 31 max | 293 max |
Physical Properties of Duplex Stainless Steel 2205
| Density(Kg.m-1) | 7810 |
|---|---|
| Magnetic Permeability | <50 |
| Young’s Modulus(N/mm2) | 190*10^3 |
| Specific Heat,20°℃(J.Kg-1.°K-1) | 400 |
| Specific Electrical Resistance,20℃(uO.m) | 0.85 |
| Thermal conductivity,20℃ | 15 |
| Mean coefficient of thermal expansion | 11*10^6 |
2205 Duplex Stainless Steel Chemical Composition:
| Grades | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| 2205 (S31803) | ≤0.03 | ≤2.0 | ≤1.0 | ≤0.03 | ≤0.02 | 21.0≤Cr≤23.0 | 2.5≤Mo≤3.5 | 4.5≤Ni≤6.5 | 0.08≤N≤0.20 |
| 2205 (S32205) | ≤0.03 | ≤2.0 | ≤1.0 | ≤0.03 | ≤0.02 | 21.0≤Cr≤23.0 | 3.0≤Mo≤3.5 | 4.5≤Ni≤6.5 | 0.14≤N≤0.20 |
Standards of Duplex Ss 2205:
- ASTM/ASME: A240 UNS S32205/S31803
- EURONORM: 1.4462 X2CrNiMoN 22.5.3
- AFNOR: Z3 CrNi 22.05 AZ
- DIN: W.Nr 1.4462
Applications of Duplex Ss 2205
Some of the typical applications of duplex stainless steel grade 2205 are listed below:
- Oil and gas exploration
- Processing equipment
- Transport, storage, and chemical processing
- High chloride and marine environments
- Paper machines, liquor tanks, pulp, paper digesters, etc.
Features of Duplex Ss 2205
Duplex Stainless Steel 2205 Compared with 316L and 317L austenitic stainless steels, 2205 is superior in anti-pitting and crevice corrosion resistance. It has high corrosion resistance. Compared with austenite, its thermal expansion coefficient is lower, thermal conductivity is higher.
Duplex Stainless Steel 2205 has twice the compressive strength of austenitic stainless steel, allowing designers to reduce their weight compared to 316L and 317L. The 2205 alloy is especially suitable for use in the -50° F/ + 600° F temperature range and can be used for lower temperatures under severe restrictions (especially for welded construction).
The corrosion resistance of 2205 Duplex Stainless Steel
- Uniform corrosion, The corrosion resistance of duplex stainless steel 2205 is superior to 316L and 317L in most environments due to chromium content (22%), molybdenum (3%), and nitrogen content (0.18%).
Local anti-corrosion, The content of chromium, molybdenum, and nitrogen in duplex stainless steel 2205 makes it highly resistant to pitting and crevice corrosion in oxidizing and acidic solutions. - Anti-stress corrosion, The 2205 duplex structure of stainless steel helps to improve the resistance to stress corrosion cracking of stainless steel. At a certain temperature, under the conditions of tension, oxygen, and chloride, chloride stress corrosion occurs in austenitic stainless steel. As these conditions are not easily controlled, the use of 304L, 316L, and 317L are limited in this regard.
- Anti-corrosion fatigue, Dual-phase steel 2205 high strength and corrosion resistance to high corrosion resistance fatigue strength. The processing equipment is susceptible to corrosive environments and loading cycles, and the duplex stainless steel 2205 features are well suited for such applications.
Metallography about Duplex Ss 2205 uns s31803
The chemical composition of the 2205 duplex steel gives the desired microstructure of 50 ϫ / 50 after 1900 / 1922° F(1040 °C / 1080°C) solid solution annealing. If the heat treatment temperature is higher than 2000 ° F, may lead to an increase in ferrite composition. Like other duplex stainless steels, 2205 alloys are susceptible to intermetallic phase precipitation.
The intermetallic phase precipitates between 1300° F and 1800 ° F and precipitates fastest at 1600° F. Therefore, we need to test 2205, to ensure that no intermetallic phase, the test reference ASTM A 923.
FAQ – 2205 Duplex Stainless Steel
What is 2205 duplex stainless steel used for?
2205 is widely used in oil & gas, marine engineering, and chemical processing because of its excellent corrosion resistance and high strength.
What is the PREN of 2205 stainless steel?
The Pitting Resistance Equivalent Number (PREN) of 2205 is typically 32-35, which is significantly higher than 316L (PREN 24), making it much more resistant to pitting in seawater.
Can I weld 2205 duplex steel?
Yes. 2205 has excellent weldability. We recommend using E2209 filler metal to ensure the weld maintains the 50/50 duplex structure for optimal corrosion resistance.
Is 2205 magnetic?
Yes, due to its 50% ferritic microstructure, 2205 duplex stainless steel is magnetic, unlike 300-series austenitic steels.
Get a 2205 Duplex Stainless Steel Quote
The price of 2205 duplex stainless steel depends on:
thickness
size
surface finish
order quantity
Huaxiao Metal provides competitive factory prices and fast delivery.
📩 Contact us today to get the latest quotation for 2205 duplex stainless steel.