Super Duplex Stainless Steel
EURONORM………… 1.4410 – X2 Cr Ni MoN 25.7.4
AFNOR………… Z3 CN 25.06 Az
As a leading supplier and manufacturer in China, GNEE Steel provides cost-effective nickel-based alloy products.
- Send E-mail: ss@gneesteel.com
- Tel: +8615824687445
Super Duplex Stainless Steel Description
Super Duplex Stainless Steel (DSS) refers to stainless steel in which ferrite and austenite each account for about 50%. Generally, the content of the smaller phase needs to be at least 30%. In the case of low C content, the Cr content is 18%~28% and the Ni content is 3%~10%. Some steels also contain alloying elements such as Mo, Cu, Nb, Ti, and N.
This type of steel has the characteristics of both austenitic and ferritic stainless steel. Compared with ferrite, it has higher plasticity and toughness, no room temperature brittleness, significantly improved intergranular corrosion resistance and welding performance, while maintaining iron content. The solid stainless steel is brittle at 475°C, has high thermal conductivity, and has superplasticity and other characteristics. Compared with austenitic stainless steel, it has high strength and significantly improved resistance to intergranular corrosion and chloride stress corrosion. Duplex stainless steel has excellent pitting corrosion resistance and is also a nickel-saving stainless steel.
Super Duplex Stainless Steel
|
Ultimate Tensile Strength, ksi |
116 min. |
|
0.2% Offset Yield Strength 0.2%, ksi |
80 min. |
|
0.1% Offset Yield Strength 0.2%, ksi |
91 min. |
|
Elongation in 2 inches, % |
15 min. |
|
Hardness Rockwell C |
32 max. |
|
Impact Energy, ft.-lbs. |
74 min. |
| Common Name | UNS Number | EN No | C | Mn | Si | Cr | Ni | Mo | N | Cu | Other | PREN*** |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Lean Duplex Stainless Steels | ||||||||||||
| 2101 | S32101 | 1.4162 | 0.04 | 4.0-6.0 | 1.00 | 21.0-22.0 | 1.35-1.70 | 0.1-0.8 | 0.20-0.25 | 0.1-0.8 | 25-27 | |
| 2202 | S32202 | 1.4062 | 0.03 | 2.00 | 1.00 | 21.5-24.0 | 1.00-2.80 | 0.45 | 0.18-0.26 | … | 25-28 | |
| 2304 | S32304 | 1.4362 | 0.03 | 2.50 | 1.00 | 21.5-24.5 | 3.0-5.5 | 0.05-0.6 | 25-28 | |||
| 2102 | S82011 | --- | 0.03 | 2.0-3.0 | 1.00 | 20.5-23.5 | 1.0-2.0 | 0.1-1.0 | 0.15-0.27 | 0.50-0.60 | 25-27 | |
| Standard Duplex Stainless Steels | ||||||||||||
| 2205 | S31803 | 1.4462 | 0.03 | 2.00 | 1.00 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 | … | 33-35 | |
| 2205 | S32205 | 1.4462 | 0.03 | 2.00 | 1.00 | 22.0-23.0 | 4.5-6.5 | 3.0-3.5 | 0.14-0.20 | … | 35-36 | |
| Super Duplex Stainless Steels | ||||||||||||
| 255 | S32550 | 1.4507 | 0.04 | 1.50 | 1.00 | 24.0-27.0 | 4.5-6.5 | 2.9-3.9 | 0.10-0.25 | 1.5-2.5 | 38-41 | |
| 2507 | S32750 | 1.4410 | 0.03 | 1.20 | 0.80 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 | 0.50 | 40-43 | |
| Z100 | S32760 | 1.4501 | 0.03 | 1.00 | 1.00 | 24.0-26.0 | 6.0-8.0 | 3.0-4.0 | 0.20-0.30 | 0.50-1.00 | W 0.5-1.0 | 40-43 |
| Hyper Duplex Stainless Steels | ||||||||||||
| 2707 | S32707 | --- | 0.03 | 1.50 | 0.50 | 26.0-29.0 | 5.5-9.5 | 4.0-5.0 | 0.30-0.50 | 1.0 | Co 0.5-2.0 | 49-50 |
| S33207 | --- | 0.03 | 1.50 | 0.80 | 29.0-33.0 | 6.0-9. 0 | 3.0-5.0 | 0.40-0.60 | 1.0 | 52-53 | ||
GNEE STEEL typically supplies 2205 duplex stainless steel in the following forms:
Fittings & Flanges
Pipe
Plate
Sheet
Tube
Bar
Super Duplex Stainless Steel Application
Super duplex stainless steel has applications in various industries:
- In the oil and gas sector it is important for downhole tools, wellheads and subsea equipment, performing well in H2S-containing environments.
- The reliable choice for contamination control scrubbers.
- Marine applications such as propellers, shafts, rudders and seals.
- For acid treatments such as sulfuric acid, nitric acid and phosphoric acid.
- Water treatment, paper and pulp, pump shafts, and chemical and petrochemical applications.
- Components such as pumps, valves, pipes and connectors used in different industries.
Super Duplex Stainless Steel Feature
• High strength
• High resistance to pitting and crevice corrosion resist.
• High resistance to stress corrosion cracking,corrosion fatigue and erosion
• Excellent resistance to chlorine stress-corrosion cracking
• High thermal conductivity
• Low coefficient of thermal expansion
• Good resistance to sulfide stress corrosion
• Low thermal expansion and higher heat
• Electrical conductivity is higher than austenitic steel
• Good processability and weldability
• High energy absorption.
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Super Duplex Stainless Steel Packing & Delivery
Super Duplex Stainless Steel Packing & Delivery
Customer Visit
Customer Visit
Gnee exports steel to over 70 countries and collaborates with more than 600 companies worldwide
FAQ
Q: What is your terms of payment ?
A: Payment<=1000USD, 50% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shipment.or negotiable
Q: What are the advantages of your company ?
A: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.
Q: How many coutries you already exported ?
A: Exported to more than 50 countries mainly from America, Kazakhstan, UK, Kuwait, Egypt, Turkey, Jordan,India, etc.
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