Lean Duplex Stainless Steel UNS S32304

Trusted Alloy 1.4362 lean duplex (austenitic-ferritic) stainless steel Material Suppliers in India

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Lean Duplex Stainless Steel UNS S32304
Lean Duplex Stainless Steel UNS S32304
Alloy 1.4362 lean duplex
Alloy 1.4362 lean duplex
EDX /LDX 2304 Stainless SteelEDX /LDX 2304 Stainless Steel

 

Duplex Alloys belong to stainless steel category where a two phase mixed microstructure is their main characteristic. The proportion of both austenite and ferrite in the ALLOY 1.4362 lean duplex (austenitic-ferritic) stainless steel is almost always in an equal ratio. Amongst duplex alloys, grade 2304 is stainless steel that has a composition of about 23% chromium with around 4% nickel. Since the content of molybdenum in the alloy is trivial, manufacturers refer to this alloy as a molybdenum-free duplex grade. Because the composition of Alloy 2304 Lean Duplex Products is similar to that of grade316L, the corrosion resistance properties of both the alloys tend to be similar.

Furthermore, the mechanical properties of lean duplex stainless steel s32304 are almost two times that of both austenitic grades, i.e. alloy 304L as well as alloy 316L. The higher mechanical property is what permits the designer, to save weight, especially if he is designing vessels for high pressure applications. The SAF 2304® lean duplex material is considered to be suitable for those tasks which are involved between temperature ranges of  -50 °C to +300 °C. Lean duplex grades have moderate resistance to pitting, which is attributed to a PREN value ranging between 22 – 27.

Typically EDX /LDX 2304 Stainless Steel, was ideated more latterly for less imperious utilisation, expressly in industries reloving both building and construction. though the corrosion resistance properties of EDX 2304 Duplex stainless tend to be similar to that of grade 316L, the benefit of using them is their resistance to stress related corrosion cracking as well as a higher boost to their mechanical properties. A combination of the aforementioned properties can be a great asset to businesses when strength is an important factor, say for e.g., the use of lean duplex UNS S32304 in the construction of bridges, pressure vessels or even tie bars.

 

Grade Standard And Specification Of Lean Duplex Stainless Steel UNS S32304

  • Material: 2304 Lean Duplex Steel, SS 2304, LDX 2304®, EN 1.4362
  • Special Properties: UNS S32304 Lean Duplex Alloy
  • Welding Filler Materials: CN 24/9 LDX PW-FD
  • LDX 2304 Lean Duplex Pipe & Tube : Welded Pipe, Seamless Pipe
  • LDX 2304 Lean Duplex Plate & Sheet : Plate, Clad Plate, Plain Sheet, Foils, Coils, Flat, Shim Sheet, Sheet, Strip
  • LDX 2304 Lean Duplex Round Bar & Rods : Round Rods, Flat Bar, Hex Bar, Round Bar

 

Chemical Composition Chart Of Alloy 1.4362 lean duplex

WEIGHT% B SI MO S C P MN CR NI N CU
MIN.     0,10         22,00 3,50 0,05 0,10
MAX. 35 PPM 1,00 0,60 0,015 0,030 0,035 2,00 24,00 5,50 0,20 0,60

 

Mechanical Characteristics of EDX /LDX 2304 Stainless Steel

ELONGATION
[%]
TENSILE STRENGTH
RM
MPA
PRE YIELD STRENGTH
RP0.2
MPA
HARDNESS
[HB]
IMPACT,
CHARPY-V, -46ºC
[J]
PLATE CR ≥ 25 ≥ 690 ≥ 28 (T<13MM) ≥ 500   ≥ 45
PLATE HR ≥ 25 ≥ 630 ≥ 28 (T≥13MM) ≥ 420 ≤ 290 ≥ 45

 

Equivalent Material Grade Of Lean Duplex Stainless Steel UNS S32304

Alloy 1.4362 AISI product Material No. UNS EN Designation
2304 EN 1.4362 S32304 DIN X2CrNiN23-4

 

Physical Properties Lean Duplex

Thermal conductivity
W/m K
Density
g/cm³
Specific heat capacity
J/kg K
Electrical resistivity
Ω mm²/m
15
7.8
500
0.8

 

Available forms available in 1.4362 ALLOY 2304

Sheets /Plates Bars Tubes/ Pipes Fittings
Alloy 2304 EN 10088 -3 1.4362 Alloy 2304 EN 10222-5 1.4362
Alloy 2304 UNS S32304 EN 10088 -3 X2CrNiN23-4 Alloy 2304 UNS S32304 EN 10222-5 X2CrNiN23-4
EN 10028-7 1.4362 EN 10088-5 1.4362 EN 10217-7 1.4362 EN 10253-4 1.4362
EN 10088-4 X2CrNiN23-4 EN 10263-5 X2CrNiN23-4 EN 10216-5 X2CrNiN23-4 EN 10253-3 X2CrNiN23-4
EN 10088-4 1.4362 EN 10263-5 1.4362 EN 10216-5 1.4362 EN 10253-3 1.4362
EN 10028-7 X2CrNiN23-4 EN 10088-5 X2CrNiN23-4 EN 10217-7 X2CrNiN23-4 EN 10253-4 X2CrNiN23-4
EN 10088-2 1.4362 EN 10272 1.4362 EN 10297-2 1.4362 EN 10269 1.4362
EN 10088-2 X2CrNiN23-4 EN 10272 X2CrNiN23-4 EN 10297-2 X2CrNiN23-4 EN 10269 X2CrNiN23-4
EN 10151 1.4362   EN 10296-2 1.4362 EN 10250-4 1.4362
EN 10151 X2CrNiN23-4   EN 10296-2 X2CrNiN23-4 EN 10250-4 X2CrNiN23-4
SA 789 uns s32304

 

UNS of Lean Duplex

Alloy 1.4362 / Lean Duplex UNS S32304 / EDX 2304

2204 Duplex stainless steel (DSS)

Lean duplex stainless steel DSS 2204 (New)
pitting resistance 1 mass %Cr + 3.3 mass %Mo + 16 mass %N
Composition 22Cr-1.5Mn-4Ni-0.2N-1.2Mo
DSS 2304 alloying elements Cr, Mo and N
(Cr and Mo are enriched in ferrite phase and N is concentrated in austenite)

 

Uses of Lean Duplex Stainless Steel

  • Desalination plants
  • Tanks and containers for food and beverage industry
  • Pressure vessels in all kinds of industries
  • Components for vehicle construction
  • Pipelines for oil and gas industry
  • Storage tanks, container or vessel for various use
  • Heat exchanger in petrochemical plants
  • Pipelines which are exposed to seawater and aggressive chemicals
  • Structural elements for bridges and architectural projects
  • Flue gas cleaning plants
  • All kinds of profiles which are needed for above mentioned range of use

 

Super Duplex vs Lean Duplex

Lean Duplex

ASTM EN-Nr. C max. Cr Ni Mo N Mn Cu W PRE*
S32101 1.4162 0,04 21,0-22,0 1,35-1,7 0,1 – 0,8 0,20-0,25 4,0-6,0 0,1-0,8 26
S32202 1.4062 0,03 21,5-24,0 1,0-2,8 0,45 0,18-0,26 2,0   26
S32304 1.4362 0,03 21,5-24,5 3,0-5,5 0,05-0,6 0,05-0,20 2,5 0,05-0,60 26


Standard

ASTM EN-Nr. C max. Cr Ni Mo N Mn Cu W PRE*
S31803 1.4462 0,03 21,0-23,0 4,5-6,5 2,5-3,5 0,08-0,20 2,0 33
S32205 1.4462 0,03 22,0-23,0 4,5-6,5 3,0-3,5 0,14-0,20 2,0 35


25% Cr

ASTM EN-Nr. C max. Cr Ni Mo N Mn Cu W PRE*
S32520 1.4507 0,03 24,0-26,0 5,5-8,0 3,0-4,0 0,20-0,35 1,5 0,5-2,0 >40
S32550 1.4507 0,04 24,0-27,0 4,5-6,5 2,9-3,9 0,10-0,25 1,5 1,5-2,5 >40


Austenitic Grades

ASTM EN-Nr. C max. Cr Ni Mo N Mn Cu W PRE*
304L 1.4307 0,03 17,5-19,5 8,0-10,5 0,11 18
316L 1.4404 0,03 16,5-18,5 10,0-13,0 2,0-2,5 0,10 24
904L 1.4539 0,02 19,0-21,0 24,0-26,0 4,0-5,0 0,15 1,20 34
S31254 1.4547 0,2 19,5-20,5 17,5-18,5 6,0-7,0 0,18-0,25 0,5-1,0 43

 

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