Stainless Steel Pipe Fittings

Duplex Stainless Steel Pipe By

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Duplex Stainless Steel Pipe By

Duplex stainless steel 2205 UNS S32305/S31803 is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed duplex stainless steel with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

Duplex stainless steel 2205 provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic stainless steel tube in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.

2101 is a low nickel, lean duplex stainless steel possessing both superior strength and chloride stress-corrosion crackingresistance when compared to 300 series stainless steel.
2304 is a lean austenitic-ferritic duplex stainless steel with general corrosion resistance similar to 316, but with yield strength nearly double that of austenitic stainless steel.
S31803 is a nitrogen, molybdenum enhanced austenitic-ferritic duplex stainless steel with general corrosion resistance similar to 904L, but with a yield strength nearly double that of austenitic stainless steel. 
2507 is a super austenitic-ferritic duplex stainless steel with exceptional strength and corrosion resistance ideal for chemical process, petrochemical, and seawater applications.

Duplex stainless steel 2205 has below capability:

l High intensity and good impact toughness 

l It can bear stress corrosion well

l Good ability to avoid patch and crack

l Low heat expand modulus and better heat transmit

l High pressure work

l Weldable

Mechanical property

Yield strength (MPa)  Tensile strength (MPa)  Elongation (%) 
≥500 ≥680 ≥30

Physics capability

density: 7.85g/cm3

Grade(UNS): Austenitic Stainless Steel:

304/304L/304H(1.4301/1.4306/1.4948); 316/316L(1.4401/1.4404); 316Ti(1.4571);

321(1.4541);309S (1.4833); 310S(1.4845); 317L(1.4438)321H(1.4878); 347H (1.4550); 

Duplex Stainless Steel:
S32001, S32003, S31500, 2205(1.4462); S32304,(1.4362);S31803,2507 (S32750),S32760(1.4501);S32101(1.4162);
Super Austenitic Stainless Steel: 904L, S30432, S31042, 6Mo (S31254, N08367) 
Nickel Base Alloys:
Alloy 20 (UNS N08020), Monel 200 (UNS 02200), Monel 400 (UNS N04400), Incoloy 800 (UNS N08800), Incoloy 800H (UNS N08810), Incoloy 800HT (UNS N08811), Incoloy 825 (UNS N08825),Inconel 600 (UNS N06600), 4J29, 4J36, GH3030, GH3039, C276 (UNS N10276)
Martensitic Stainless Steel:410(1.4006), 410S(1.4000), 420(1.4021)
Ferritic Stainless Steel:405(1.4002), 430(1.4016)

Outside Diameter: 6 – 830mm
Wall Thickness: 0.50 – 60mm
Standards(Norm): EN 10216-5; DIN 17456, DIN 17458, DIN 2462, DIN 17455
GB/T14975; T14976; T13296; GB5310;
ASTM A213, A269, A312, A511, A789, A790, A928, A999, A1016, ASTM B161, ASTM B163, ASTM B165, ASTM B167, ASTM B338, ASTM B407, ASTM B423, ASTM B444,ASTM B619, ASTM B622, ASTM B626, ASTM B668, ASTM B677, ASTM B829
JIS G3459, JIS G3463, JIS G3446, JIS G3447, JIS G3448, JIS G3468
GOST 9940;GOST 9941;

Related References:
1. Duplex Stainless Steel Pipe
2. Duplex Stainless Steel
3. Super-Duplex Stainless Steel
4. Principle of Duplex Stainless Steel
5. How the Austenite Ferrite Balance Achieved
6. Corrosion Resistance of Duplex Stainless Steel
7. Stress Corrosion Cracking SCC of Duplex Stainless Steel
8. Barrier to Using Duplex Stainless Steel
9. Duplex Stainless Steel Grades Comparison Table
10. S32101 | S32205/S31803 | S32304 | S32750 | S32760 

ASTM A789/A789M
ASTM A 790/A 790M
Duplex Stainless Steel Pipe
Austenitic-Ferritic Stainless Steel Pipe
Super-Duplex Stainless Steels and their characteristics
2507 S32750(1.4410) Duplex Steel
S32205 S31803(1.4462) Duplex Steel
S32304(1.4362) Duplex Steel
Use of stainless steel under high temperature condition refer table
Corrosion Resistant Stainless Steel Tube
Corrosion Resistance of Stainless Steel Tubes
High Temperature Stainless Steel Tubes
High Temperature Stainless Steel Tubes
High Temperature Property Stainless Steel
Heat resistant Stainless Steel Tubes
Welded Stainless Steel Pipe 
U-bend Stainless Steel Tubes 
Heat Exchanger Tubes
Duplex Stainless Steel Tubes 
Boiler Tubes, Condenser Tubes
Corrugated Seamless Stainless Steel Pipe Tube
DIN 2391 Seamless Precision Steel Tubes
DIN2391 Seamless Pricision Steel Tube Tubing Tubes
Non Acid-resisting Stainless Steel Tube
Bright Annealing Stainless Steel Tubes
High Temperature-Tubes and Pipes Standards
Heat Resistant Stainless Steels and Corrosion Resistant Stainless Steels-Valve Steels,Iron Baes Super alloys
Compared with the ferritic stainless steel, duplex stainless steel vulnerable

Compared with the austenitic stainless steel, duplex stainless steel strengths and vulnerable

Source: Zhejiang Yaang Pipe Industry Co., Limited (

Article Categories:
Duplex Stainless Steel

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