SS 1.4462 duplex 2205 stainless steel Tubing ASTM A928 Good Weldability Polished Surface

Brand Name:SPEZILLA
Certification:ISO9001:2008
Model Number:UNS S31803, S32205, S32750, S32760,1.4462
Minimum Order Quantity:Negotiation
Delivery Time:10 DAYS
Payment Terms:T/T or L/C
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SS 1.4462 duplex 2205 stainless steel Tubing ASTM A928 Good Weldability Polished Surface


Description:


Duplex & Super Duplex Welded Stainless Steel Pipe appeared in the marketplace due to the need to combat the shortcomings of austenitic and ferritic steels. It was found that a mixture of these two materials resulted in higher strength, reduced weight, good weldability and increased resistance to stress corrosion cracking.


Unlike similar steels, duplex also displays an improved resistance to localised corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. Due to its ferritic qualities, duplex steel also shows very good resistance to stress corrosion cracking when compared to standard austenitics. In some cases, the strength of duplex steel can be up to double that of the most commonly used grades of stainless steel.

Another benefit of duplex steels is that because it has a lower nickel and molybdenum content than other austenitic stainless steels, it can prove to be a more cost effective option due to its lower alloy content.


These benefits clearly show why Duplex steels have become popular in applications such as pressure vessels, cooling pipes and storage tanks.


Duplex becomes brittle at extreme temperatures so its use is normally restricted to a maximum temperature of 300 degrees. Duplex also shows signs of embrittlement at –50 degrees.


Advantages:


1. Stronger than 300 series stainless steel which also brings weight advantages


2. High resistance to pitting, crevice corrosion and stress corrosion cracking


3. Higher heat conductivity and lower thermal expansion than austenitic steels



Applications:


1. Pipes for production and transportation of oil and gas


2. Structural and mechanical components


3. Heat exchangers


4. Cooling pipes


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

Specifications (ASTM/ASME) Super Duplex Stainless Steel Pipe
AlloyUNS DesignationMinimum Tensile Strength
Minimum Yield
Strength
0.2% Offset
Minimum Percent (%)
Elongation in
2 inches (50.8 mm)
(psi)(MPa)(psi)(MPa)
2507S32750116,00080080,00055015

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

Chemical Composition (%) Super Duplex Stainless Steel Pipe
Alloy2507
UNS DesignationS32750
Carbon (C) max.0.030
Manganese (Mn) max.1.20
Phosphorus (P) max.0.035
Sulfur (S) max.0.020
Silicon (Si) max.0.80
Chromium (Cr)24.0 - 26.0
Nickel (Ni)6.0 - 8.0
Molybdenum (Mo)3.0 - 5.0
Nitrogen (N)0.24 - 0.32
Copper (Cu) max.0.50
Iron (Fe)Balance

Mechanical Property:


Typical Physical & Mechanical Properties - Annealed Condition (Room Temperature)
Duplex Stainless Steel Pipe
AlloyUNS DesignationMinimum Tensile Strength
Minimum Yield
Strength
0.2% Offset
Minimum Percent (%)
Elongation in
2 inches (50.8 mm)
(psi)(MPa)(psi)(MPa)
2205S3180390,00062065,00045025
2205S32205195,00065570,00048525
2205S32205295,00065565,00045025
Super Duplex Stainless Steel Pipe
AlloyUNS DesignationMinimum Tensile Strength
Minimum Yield
Strength
0.2% Offset
Minimum Percent (%)
Elongation in
2 inches (50.8 m
m)
(psi)(MPa)(psi)(MPa)
2507S32750116,00080080,00055015

China SS 1.4462 duplex 2205 stainless steel Tubing ASTM A928 Good Weldability Polished Surface supplier

SS 1.4462 duplex 2205 stainless steel Tubing ASTM A928 Good Weldability Polished Surface

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