1.446 Duplex Stainless Steel Pipe , Super Duplex Pipe Seamless Corrosion Resistance

Brand Name:SPEZILLA
Certification:ISO9001:2008, PED 97/23/EC
Model Number:Seamless Tube
Minimum Order Quantity:Negotiation
Delivery Time:25 DAYS
Payment Terms:T/T or L/C
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1.4462 Duplex Stainless Steel ASTM A789 S31803 Duplex Stainless Steel Tube


Duplex 2205, also known as UNS S32205, is a nitrogen-enhanced stainless steel. Users choose Duplex 2205 for its excellent corrosion resistance along with its high strength. It is important to note that Duplex 2205, offers much higher levels of corrosion resistance than most other austenitic stainless steels. Other benefits include:

  • High resistance to pitting and crevice corrosion
  • Excellent in most caustic environments
  • Good weldability

To be considered Duplex 2205, a stainless steel must have a chemical composition that includes:

  • Cr 21-23%
  • Ni 4.5-6.5%
  • Mn 2% Max
  • Mo 2.5-3.5%
  • N 0.08-0.20%
  • P 0.30% max
  • C 0.030% max

The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance).

Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless.


Specifications:


UNS S31803

ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988
SAE J405


UNS S32205

ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988
SAE J405


Specifications of Duplex Stainless Steel Welded Tube


1. Standard: ASTM ASME
2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH
ASTM A789, ASTM A790, ASTM A450, ASTM A530,
GB/T 14976, GB/T 14975, GB/T 13296, etc
3. OD: 8mm-1000mm
4. Wall thickness: 0.3mm-30mm
5. Length: max.18000mm or as demand

6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.


Features

  • High resistance to chloride stress corrosion cracking
  • Chloride pitting and crevice corrosion resistance superior to 317L stainless
  • Good general corrosion resistance
  • High strength
  • Good sulfide stress corrosion resistance
  • Useful up to 600°F

Applications

  • Chemical process vessels, piping, and heat exchangers
  • FGD scrubber systems
  • Pulp mill digesters, bleach washers, chip presteaming vessels
  • Food process equipment
  • Oil field piping, heat exchangers

Specifications:


Specifications (ASTM/ASME) Duplex Stainless Steel Pipe
AlloyUNS DesignationMaterial
Specification
Tubing
Specification
Pipe
Specification
2205S31803/S32205A 240/SA-240A 270A 790/SA-790
A 789/SA-789A928/SA928

Chemical Compositions:


Chemical Composition (%) Duplex Stainless Steel Pipe
Alloy22052205
UNS DesignationS31803S32205
Carbon (C) max.0.0300.030
Manganese (Mn) max.2.002.00
Phosphorus (P) max.0.0300.030
Sulfur (S) max.0.0200.020
Silicon (Si) max.1.001.00
Chromium (Cr)21.0 - 23.022.0 - 23.0
Nickel (Ni)4.5 - 6.54.5 - 6.5
Molybdenum (Mo)2.5 - 3.53.0 - 3.5
Nitrogen (N)0.08 - 0.200.14 - 0.20
Iron (Fe)BalanceBalance

Steel grade45% MgCl at 155oC40% CaCl2 at 100oC40% CaCl2 at 100oC, 0.9 x Rp0.225% NaCl, pH 1.5, 106oC25% NaCl, 106oC1500 ppm Cl- at 100oC
4307ProbableProbableProbableProbableProbableProbable
4404ProbableProbableProbableProbablePossibleProbable
2201ProbableNot probableNot probableNot probableNot probableNot probable
2304ProbableNot probableNot probableNot probableNot probableNot probable
2404ProbablePossibleNot probableNot probableNot probableNot probable
2205ProbableNot probableNot probableNot probableNot probablePossible
2507ProbableNot probableNot probableNot probableNot probableNot probable
254 SMOProbableNot probableNot probableNot probableNot probableNot probable

China 1.446 Duplex Stainless Steel Pipe , Super Duplex Pipe Seamless Corrosion Resistance supplier

1.446 Duplex Stainless Steel Pipe , Super Duplex Pipe Seamless Corrosion Resistance

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