Duplex Steel

duplex Steel

2205 Stainless Steel supplier in India, check Duplex 2205 price, grades and properties

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 grades at a glance with ASTM specification and equivalent chart

Duplex Steel Products


Duplex Steel Price Per Kg

UNS 31803 DUPLEX PLATE INR 329/kg

Duplex steel equivalent

Alloy Grade EN W-Nr UNS No. DIN Standard AFNOR SS
2707 HD - - S32707 - - -
2507 1.4410 - S32750 X 2 CrNiMoN 25 7 4 - 2328
2205 1.4462 1.4462 S31803/ S32205 X 2 CrNiMoN 22 5 3 Z 2 CND 22-05-03 2377
2304 1.4362 1.4362 S32304 X 2 CrNiN 23 4 Z 2 CN 23-04AZ 2327

Duplex Steel Grades

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 strips Rod / Bar Forging Items
2707 HD ASTM A789; A790 / SA789 - - - - -
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
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
2304 ASTM A789; A790 / SA789
EN 10216-5
- - ASTM A240/ SA240
EN 10088-2
EN 10088-3 EN 10088-3*

Duplex Steel material specification

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 ASTM 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

Duplex stainless steel temperature limits

Grade Temperature (°C/ °F)
2707 HD 1080-1120 Deg C/ 1976-2048 Deg F
2507 1050-1125 Deg C/ 1922-2057 Deg F
2205 1020-1100 Deg C/ 1868-2012 Deg F
2304 930-1050 Deg C/ 1706-1922 Deg F

Duplex Steel Applications

  • 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 5 - -
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 5.7 3.1 - - -
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 max. 74 min.
LDX 2101 65 ksi 94 ksi 30 290 (max)
Zeron 100 80 109 25 28 HRC

Corrosion Resistance of Duplex Stainless Steel

PREN = %Cr + 3.3 x %Mo + 16 x %N

Type Grade EN No/ UNS Typical PREN
Ferritic 430 1.4016/
S43000
18
Austenitic 304 1.4301/
S30400
 19
Austenitic 316  1.4401/
S31600
 24
Austenitic 316L 2.5 Mo 1.4435  26
Duplex 2205  1.4462/
S31803/
S32205
35
Duplex 2507 1.4410/
S32750
43
Austenitic 904L 1.4539/
N08904
34
Ferritic 441 1.4509/
S43932
19
Duplex RDN 903 1.4482/
S32001
 22
 Ferritic 444 1.4521/
S44400
24
Duplex 2101 LDX  1.4162/
S32101
26
Duplex 2304 1.4362/
S32304
26
Duplex DX2202 1.4062/ S32202 27
 Duplex Zeron 100  1.4501/
S32760
41
 Duplex Ferrinox 255/
Uranus 2507Cu
1.4507/
S32520/
S32550
 41
Austenitic 6% Mo 1.4547/
S31254
44

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SS 329 SS 416
SS 202 SS 415
420 316N
AISI 616 409
430F AISI 414
SS 204Cu AISI 420F
AISI 310L 431
AISI 302HQ 304 CU
253MA AISI 405
Alloy 801 F51
SS 410S SS 302
SS 410 AISI 321
AISI 631 303CU
316F 3CR12
UNS S31002 1 4335 Alloy 218 UNS S21800 nitronic 60
Inconel 702 chemical composition 201ln properties
317lmn 1 4439 equivalent AISI 347h chemical composition
SS 309 chemical composition UNS S30500 AISI 305
1 4511 material equivalent 17 4 ph z6cnu17 04 equivalent
A286 1 4944 SS 347 equivalent material
UNS S41426 super 13 cr equivalent 1 4534 material
AISI 301 material properties AISI 316l
AISI 405 equivalent AISI 409 ni
SS 216l composition 1 4311 304ln
304n 353ma
AISI 303 material chemical composition AISI 429 1 4001 equivalent
AISI 631 chemical composition AISI 310l nag composition
AISI 430 equivalent UNS R30016 stellite 6b chemical composition
UNS S32550 material 310moln UNS S31050 material
DIN 1 4859 material equivalent  

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