High Toughness Duplex Steels
Affordable duplex steels | Laxcon

Duplex steel Bars Image

Duplex steel 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.

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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.

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.

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 (Max) Cu % N2 (Max)
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