Category:
Nickel Alloy
Duplex Steel has a balance mix of two distinct phase austenite and ferrite, ferritic contributing to strength and austenitic resistance to corrosion. Its Chromium and molybdenum contents make it resistant to pitting and crevice corrosion especially in tough conditions.
DSS Applications
Duplex type Stainless Steel has a wide range of usage in industries such as Pharmaceutical, Marine, Automotive, and Aerospace.
Let’s detail its usage more specifically.
Pharma & Medical
In Pharma and medical the product is mostly used in the manufacturing sector.
Implantable Medical Products
Like components used in orthopaedic plates and screws, dental implants, pace maker and stents.
Surgical Instruments
Duplex stainless steel is preferred alloy in surgical instruments, such as forceps, scalpels, and clamps.
Imaging Machines & Scanners
The usage in scanners and imaging machines helps to create accurate imaging.
Hospital furniture & Equipment
Well suitable to be used as beds, tables, and cabinets this is in accordance to its rigors of a hospital environment.
Marine & Offshore
In The marine industry duplex stainless steel is used to produce.
Propeller Shafts
Its high strength that enables it to weight ratio of enormous material make it an ideal choice for shafts.
Ship Hulls
Due to its superior strength it is a preferred material for Hulls.
Anchor Chains
Due to its strength duplex is the preferred alloy to be used in chains.
Piping
Due to anti-corrosion resistance duplex plays in important role in shipboard piping systems.
Deck Hardware
Duplex is a preferred alloy in the usage of deck hardware such as cleats, bollards, clocks.
Marine Fittings
Due to its hardness and anti-corrosion nature it’s well preferred as a alloy for fittings, flanges, valves.
Aerospace
The usage of duplex stainless steel is as mentioned:
Structural Components
The features of this alloy makes it ideal in landing gears, wing spares, plugs, valves, etc.
High temperature Components
The alloy is used in high-temperature components such as exhausts, heat shields, turbine blades, due to its endurance in high temperature.
Hydraulic Systems
In the hydraulic system you can find it in valves and fittings
Fasteners
It is also a preferable alloy for production of fasteners, like bolts and nuts.
Oil & Gas
This alloy is used in production areas in oil & gas companies.
Offshore Platforms
Most preferable product for offshore platforms, since fatigue resistance make this product much suitable for harsh environments.
Subsea Pipelines
A perfect alloy since its highly resistant to fatigue and oxidation making it the choice to subsea platforms.
Downhole Equipment
A primary product for downhole equipment such as drill bits where superior alloy resistance makes it ideal.
Valves and Fittings
Due to its outstanding strength and performance it is used in valves and fittings.
Construction
In the construction industry this alloy is used to construct Bridges, and towers it is also used as steel fortification within concrete for a complete structural foundation, it high strength, anti-corrosive properties, strength and temperature resistance make it an ideal product withstand all.
Chemical
This alloy is well appreciated due to its duplex type, hence it’s wildly used as in pumps, valves, tanks heat exchangers, also suitable for hazardous chemicals while in transport through containers, this is due to its exceptional corrosion properties.
Duplex steel equivalent
| Alloy Grade | EN | W-Nr | UNS No. | DIN Standard | AFNOR | SS |
|---|---|---|---|---|---|---|
| 2304 | - | - | S32707 | - | - | 2327 |
| 2205 | 1.4410 | - | S32750 | X 2 CrNiMoN 25 7 4 | - | 2377 |
| 2507 | 1.4462 | S31803/ S32205 | X 2 CrNiMoN 22 5 3 | Z 2 CND 22-05-03 | 2328 | |
| 2707 HD | 1.4362 | 1.4362 | S32304 | X 2 CrNiN 23 4 | Z 2 CN 23-04AZ | - |
Duplex Steel Grades
| Table Header | Table Header |
|---|---|
| 2205 | UNS S31803 / S32205 |
| 2507 | UNS S32750/ S32760/ S32550 / S39274 |
| 4501 | |
| UR52N+ | UNS S32550 |
| Zeron 100 | UNS S32760 |
| Ferralium 255 | UNS S32550 |
| Lean Duplex | LDX 2101/ 2304/ 2404 |
| Hyper Duplex | |
Duplex Steel ASTM Grades
| Material Grade | Seamless and welded pipes/ tubes | Pipe Flanges | Pipe Fittings | Sheet, Plate and strip | Rod / Bar | Forging Items |
|---|---|---|---|---|---|---|
| 2304 | ASTM A789; A790 / SA789 EN 10216-5 | - | - | ASTM A240/ SA240 EN 10088-2 | EN 10088-3 | EN 10088-3* |
| 2205 | ASTM A789; A790/ SA789 NFA 49-217 | ASTM A182 | ASTM A182/ SA182, ASTM A815/ SA815 | ASTM A240/ SA240 EN 10088-2 | ASTM A276/ SA276 ASTM A479/ SA479 EN 10088-3 | ASTM A182/ SA182 |
| 2507 | ASTM A789; A790/ SA789 | ASTM A182 | ASTM A182/ SA182, ASTM A815/ SA815 | ASTM A240/ SA240 EN 10088-2 | ASTM A479/ SA479 EN 10088-3 | ASTM A182/ SA182 |
| 2707 HD | ASTM A789; A790 / SA789 | - | - | - | - | - |
Duplex Steel material specification
Duplex stainless steel temperature limits
| Grade | Temperature (°C/ °F) |
|---|---|
| 2304 | 1080-1120 Deg C/ 1976-2048 Deg F |
| 2205 | 1050-1125 Deg C/ 1922-2057 Deg F |
| 2507 | 1020-1100 Deg C/ 1868-2012 Deg F |
| 2707 HD | 930-1050 Deg C/ 1706-1922 Deg F |
Duplex Steel Applications
| Material Grade | UNS No. | ASTM / ASME Standard Specifications |
|---|---|---|
| 2205 22Cr | UNS S31803 | ASTM A182 (F51), A240, A276, A479, A789, A790, A815, A928, A988 ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815 SAE J405 |
| 2205 22Cr | UNS S32205 | ASTM A182 (F60), A240, A276, A479, A480, A798/ SA798, A790/ SA790, A815, A928, A988 ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815 SAE J405 |
| 2507 | UNS S32750 | ASTM A182 F53, A240/ SA240, A276/SA276, A479, A789, A790, A815, A928, A988 SAE J405 |
| UNS S32760 | STM A182 F55, A240/ SA240, A276/SA276, A314, A473, A479, A789/ SA789, A790, A815, A928, A988 SAE J405 | |
| International standards | ASTM A182 F51, SUS 329J3L, STS329 J3LTP, S31803, SS2377, AISI 318 LN, Z3CND22-05Az | |
- Biofuels Gas plants
- Water transmission piping
- Reactor / Pressure vessels tanks and heat exchangers
- Seawater Desalination plants systems
- Rotors, impellers and shafts in industrial use
- Pulp and paper industry
- Phosphoric acid production plants
- Air pollution control systems
- oil and gas industry
- Mining and architectural purpose
Duplex Steel Composition
| Steel Grade | WNR / UNS | Type | Chemical Equation | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Cr | N | Ni | Mo | Mn | W | Cu | |||
| 2101 LDX | 1.4162/ S32101 | Lean | 21.5 | 0.22 | 1.5 | 0.3 | 3 | - | DX2202 |
| 1.4062/ S32202 | Lean | 23 | 0.2 | 2.5 | 0.3 | 1.5 | - | - | - |
| RDN 903 | 1.4482/ S32001 | Lean | 20 | 0.11 | 1.8 | 0.2 | 4.2 | - | - |
| 2304 | 1.4362/ S32304 | Lean | 23 | 0.10 | 4.8 | 0.3 | - | - | - |
| 2205 | 1.4462/ S31803/ S32205 | Standard | 22 | 0.17 | 57 | 31 | - | - | - |
| 2507 | 1.4410/ S32750 | Super | 25 | 0.27 | 7 | 4 | - | - | - |
| Zeron 100 | 1.4501/ S32760 | Super | 25 | 0.25 | 7 | 3.2 | - | 0.7 | 0.7 |
| Ferrinox 255/ Uranus 2507Cu | 1.4507/ S32520/ S32550 | Super | 25 | 0.25 | 6.5 | 3.5 | - | - | 1.5 |
Duplex Steel properties
| Grade | Yield Strength 0.2% ksi (min) | Tensile Strength ksi (min) | Elongation % | Max Hardness (HB) | Max Hardness (Rockwell B) | Impact Energy, ft.-lbs |
|---|---|---|---|---|---|---|
| 2205 | 65 | 90 | 25 | 217 | ||
| 2304 | 58 (400) | 87 (600) | 25 | 293 | 31j | |
| 2507 | 80 min. | 116 min. | 15 min. | 32 min. | 7432 | LDX 2101 |
| 65 ksi | 94ksi. | 30 | 290 (max) | |||
| Zeron 100 | 80 | 109 | 25 | 28 HRC |
Corrosion Resistance of Duplex Stainless Steel
| Type | Grade | EN No/ UNS | Typical PREN |
|---|---|---|---|
| Ausentic | 304 | 1.4016/ S43000 | 18 |
| Austenitic | 316 | 1.4016/ S43000 | 1.4401/ S31600 |
| Ferritenitic | 430 | 19 | 24 |
| Duplex | 2205 | 1.4462/ S31803/ S32205 | 35 |
| Duplex | 2304 | 1.4362/ S32304 | 26 |
| Duplex | 2507 | 1.4410/ S32750 | 43 |
| Austenitic | 904L | 1.4539/ N08904 | 34 |
| Ferritic | 441 | 1.4509/ S43932 | 19 |
| Ferritic | 444 | - | 24 |
| Duplex | RDN 903 | 1.4482/ S32001 | 22 |
| Duplex | 2101 LDX | 1.4162/ S32101 | 26 |
| Duplex | DX2202 | 27 | Duplex |
| Zeron 100 | 1.4501/ S32760 | 41 | Duplex |
| Ferrinox 255/ Uranus 2507Cu | 41 | Ausentic | 6% Mo |
Our Completed Projects
Checkout Our Similar Projects
We work with a passion of taking challenges and creating new ones in advertising sector.
Links
Products
© All Copyright 2024 by Sambhaav Metal.com