Duplex steel Bars

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.

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.

Mechanical

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

Mechanical

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

Standard Grade C % Si % Mn % P % S % Cr % Mo % Ni (Max) Cu % N2 (Max) W %
ASTM A 182 F-51 0.03 1 2 0.03 0.02 21-23 2.5-3.5 4.5-6.5 0.08-0.20
ASTM A 182 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 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 182 F-55 0.03 1 1 0.03 0.01 24-26 3-5 6.0-8.0 0.5-1.0 0.2-0.3 0.5 – 1.0
ASTM A 276 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 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 276 UNS S32760 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 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 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 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 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 1.4410 0.03 1 2 0.035 0.015 24-26 3.0-4.5 6.0-8.0 0.24-0.35
DIN EN 10088-3 1.4501 0.030 1 1 0.035 0.015 24-26 3.0-4.0 6.0-8.0 0.5-1.0 0.20-0.30 0.5-1.0

Applications

Structural design components
Storage and exchange equipment (High pressure, saline applications)
Heat exchangers
Aerospace, Pulp and Paper industry