Duplex Roundbar - Metco Overseas

The duplex round bars are made up of a material known for the ferritic and austenitic stainless steel qualities. There are different forms such as the Duplex 2205 Hex Bar, round bar, flat bar and square bars. The different shapes help serve in different application types. The square bar is used for strength and in structural applications. The Duplex Flat Bar is used for its low weight and it is useful for structural lattices. The corrosion resistance of the material with strength makes the bars to be used in petroleum, petrochemical, marine, power generation and in many other applications.

Specification of Duplex Roundbar

Grade	Duplex Steel UNS S31803 \| S32205
Specification	EN, DIN, JIS, ASTM, BS, ASME, AISI
Standard	ASTM A276, ASME SA276
Size	6 mm to 120 mm
Diameter	6 mm to 350 mm Diameter
Thickness	100 mm to 600 mm Length
Tolerance	+/-0.2 mm or as per clients’ requirements
Length	1 Meter to 6 Meters, Custom cut lengths
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Form	Round Bars, Square Bars, Flat Bars, Threaded Bars, Hollow Bars, Hexagonal Bars, Triangular Bars

Chemical Composition of Duplex Roundbar

Grade	UNS No	C %	Cr %	Ni %	P %	Si %	S %	Mo %	N %	Mn %
31803	S31803	< 0.03	21.0-23.0	4.5-6.5	1.03 max	1 max	0.02 max	2.5-3.5	0.08-0.2	< 2.0
2205	S32205	< 0.03	22.0-23.0	4.5-6.5	0.03 max	1 max	0.02 max	3.0-3.5	0.14-0.20	< 2.0

Mechanical Properties of Duplex Roundbar

Grade	YS (MPa)	UTS (MPa)	% Elongation	Hardness(BHN)
31803	450 min.	620 min.	25 min.	293 max.
2205	450 min.	655 min.	25 min.	293 max.

Physical Properties of Duplex Roundbar

Density (Kg / M3)	Modulus of Elasticity (GPa)	Poisson’s Ratio	Thermal Conductivity (W/moC)	Thermal Capacity (I/KgoC)	Electrical Resistivity
7800	200	0.3	15	500	0.80