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Duplex Steel

Duplex stainless steels bars have enormous hardness making them the first choice for applications that need strength. Duplex stainless steels are called "duplex" because they have a two-phase microstructure consisting of grains of ferritic and austenitic stainless steel. This structure provides a unique set of benefits. Duplex steel is about twice as strong as regular austenitic or ferritic stainless steel. It is corrosion-resistant and significantly has better toughness and ductility than ferritic grades. As a top duplex stainless steel manufacturer in India, we remain extremely particular about the physical and mechanical properties of our bars.

Bright Bars

Supply conditions

Strength Duplex stainless steels are about twice as strong as regular austenitic or ferritic stainless steel.
Corrosion resistance As with all stainless steels, corrosion resistance depends mostly on the composition of the stainless steel. The composition of this steel makes it better at resisting corrision.
Toughness and ductility Duplex stainless steel has significantly better toughness and ductility than ferritic grades.

Applications

Structural Design Components
Storage and Exchange Equipment(High Pressure, Saline applications)
Heat Exchanger
Aerospace, Pulp and Paper Industry
Duplex stainless steels are called “duplex” because they have a two-phase micro-structure consisting of phases of ferritic and austenitic stainless steel.
This structure provides a unique set of benefits.
Heat Treatment – Solution Annealed

PREN Values

Steel grade 1.4307 1.4404 904L 1.4462 2205
PREN 18 24 34 31 35

Mechanical Properties

Grade No. Yield Strength (Rp 0.2%) (Min) UTS (Mpa)(Min) UTS (Mpa)(Max) % Elongation (Min) % Reduction area (Min) Hardness (BHN) (Max)
1.4462 450 650 880 25 – 270
UNS S31803 448 620 – 25 – 290
UNS S32205 450 655 – 25 – 290

Chemical Composition

Standard Grade C % Si % Mn % P % S % Cr % Mo % Ni % Cu % N2 %
ASTM A 182:2018 F-51 0.03 1 2 0.03 0.02 21-23 2.5-3.5 4.5-6.5   0.08-0.2
ASTM A 182:2018 F-60 0.03 1 2 0.03 0.02 22-23 3.0-3.5 4.5-6.5   0.14-0.2
ASTM A 182:2018 F-53 0.03 0.8 1.2 0.035 0.02 24-26 3-5 6.0-8.0 0.5 0.24-0.32
ASTM A 276:2017 UNS S32205 0.03 1 2 0.03 0.02 22-23 3.0-3.5 4.5-6.5   0.14-0.2
ASTM A 276:2017 UNS S31803 0.03 1 2 0.03 0.02 21-23 2.5-3.5 4.5-6.5   0.08-0.20
ASTM A 240:2018 UNS S32750 0.03 0.8 1.2 0.035 0.02 24-26 3-5 6.0-8.0 0.5 0.24-0.32
Din EN 10088-3 : 2014 1.4462 0.03 1 2 0.035 0.015 21-23 2.5-3.5 4.5-6.5   0.1-0.22
Din EN 10088-3 : 2014 1.4460 0.05 1 2 0.035 0.03 25-28 1.3-2.0 4.5-6.5   0.05-0.2
EN 10095 : 1999 1.4821 0.1-0.2 0.8-1.5 2 0.04 0.015 24.5-26.5   3.5-5.5   0.11
Din EN 10088-3 :2014 1.4410 0.03 1 2 0.035 0.015 24-26 3.0-4.5 6.0-8.0   0.24-0.35
EN 10028-7 : 2000 1.4362 0.03 1.0 2.0 0.035 0.015 22-24.5 0.1-0.6 3.5-5.5 0.1-0.6 0.05-0.2

 

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Laxcon Steels Limited

C-55/2, Wazirpur Industrial Area, New Delhi – 110052, India

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