Welcome Jiangsu Haohua Industry Group Website Map

Super Duplex Stainless



Duplex Stainless Steels Available

Haohua Industrysupplies LDX2101, 2205, Ferralium 255, Zeron 100 and LDX2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire.


Duplex Stainless Steel Overview

Duplex Stainless Steels, also referred to as austenitic-ferritic stainless steels, are a family of grades with about equal proportions of ferrite and austenite. These steels have a duplex microstructure which contributes to their high strength and high resistance to stress corrosion cracking. Due to their high content of chromium, nitrogen and molybdenum, duplex steels offer good resistance to local and uniform corrosion. Duplex stainless steels have good weldability.

Today, modern duplex stainless steels can be divided into three groups:
Lean Duplex such as LDX2101
Standard Duplex such as 2205, the work-horse grade accounting for more than 80% of duplex usage
Super Duplex such as Ferralium 255 and  Zeron 100 and LDX2507 

Of the duplex grades, duplex 2205 is the most widely used. However, the super duplex steels like Zeron® 100 and LDX2507 are excellent for servicing severe corrosive environments, such as offshore and marine applications.  Lean duplex 2101 is available as an economic alternative to 300 series stainless steels.


What are the Characteristics of Duplex Stainless Steels?

Very good resistance to uniform corrosion
Very good resistance to pitting and crevice corrosion
High resistance to stress corrosion cracking and corrosion fatigue
High mechanical strength
Good sulfide stress corrosion resistance
Good abrasion and erosion resistance
Good fatigue resistance high energy absorption
Low thermal expansion
Good weldability


In what Applications are Duplex Stainless Steels® used?

Oil and gas equipment
Offshore technology
Seawater desalination plants
Chemical industry, especially when handling chlorides
Flue-gas cleaning
Desalination plants and seawater systems
Pulp and paper industry
Cargo tanks and pipe systems in chemical tankers
Firewalls and blast walls on offshore platforms
Storage tanks
Pressure vessels, reactor tanks, and heat exchangers
Rotors, impellers and shafts

Super Duplex 2205

DUPLEX UNS32205 ASTM A 182, A 240, A 276, A 789, A 790, A 815 UNS3 S31803,UNS32205 NACE MR0175 Forms …

Super Duplex 2507

SUPER DUPLEX 2507 UNS S32750 Forms ofSuper Duplex 2507Available at Haohua Industry Sheet Plate Bar Pi…

Super Duplex Zeron 100

ZERON 100, SUPER DUPLEX STAINLESS STEEL UNS S32760 Forms of Zeron 100, super duplex stainless steel a…

Lean Duplex 2101

LDX 2101, DUPLEX STEEL UNS S32101 Forms ofLDX 2101Available at Haohua Industry? Sheet Plate Bar Weldi…

Lean Duplex 2304

Product Information for Lean Duplex 2304 tubing and pipe Sizes Standard Tolerances Products OD Wall L…

Lean Duplex 19D

Product Information for Lean Duplex 19D tubing and pipe Sizes Standard Tolerances Products OD Wall Le…

Lean Duplex 2003

Product Information for Lean Duplex 2003 tubing and pipe Sizes Standard Tolerances Products OD Wall L…

  • Total 1 Page 7 Records.