Duplex S31803/2205 Pipe

UNS S31803 is a ferritic-austenitic stainless steel. S31803 and 2205 Pipe Tube are seamless and weldable.

Duplex S31803/2205 Pipe and Tube stanard:
ASME SA789 /ASTM A789: Standard for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service.
ASME SA790 /ASTM A790: Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe.

HT PIPE supplys the ASME SA789 S31803/2205 Seamless and Welded Tubes and ASME SA790 S31803/2205 Seamless and Welded Duplex Stainless Steel Pipe for the Oil and Gas, Refinery, Petrochemical and Power Industries.

S31803/2205 Pipe size:
Seamless Pipe size: 4 to 219mm; W. T.: 0.5 to 20mm
Seamless Tube Size: 3.35 mm To 101.6 mm (OD)
Welded Pipe size: 5.0 mm – 1219.2 mm
S31803/2205 Pipe Schedule:
SCH5, SCH10, SCH10S, SCH20, SCH30, SCH40, SCH40S, STD, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXSS31803 Pipe Form:Round, Square, Hollow, Rectangular, Hydraulic, Straight Pipes, U bent Tube, Hollow, LSAW Tube Etc.

A789 S31803 Tube	A790 UNS S31803 Pipe	Seamless Duplex SS Tube
Duplex Welded Pipe	S32205 Pipe	Duplex Welded Tube

S31803 and 2205 Duplex Pipe Chemical Composition:

Grade	C≤	Mn≤	P≤	S≤	Si≤	Ni	Cr	Mo	N
S31803	0.03	2.00	0.03	0.02	1.00	4.5–6.5	21.0–23.0	2.5–3.5	0.08–0.20
S32205	0.03	2.00	0.03	0.02	1.00	4.5–6.5	22.0–23.0	3.0–3.5	0.14–0.20

Mechanical properties	Tensile, min, ksi[MPa]	Yield, min, ksi[MPa]	Elongation, %(min)	Hardness, HB（max）
S31803	90 [620]	65 [450]	25	290
S32205	95 [655]	65 [450]	25	290

Equivalent Grades for S31803 Duplex Stainless Steel Pipe:

STANDARD	UNS	WERKSTOFF NR.
Duplex S31803/2205	S31803	1.4462

Dimensional Tolerance:

Nominal pipe size up to 4 = ± 0.79 mm | 5 thru 8 = + 1.58 mm / - 0.79 mm 10 thru 18 = + 2.37 mm / - 0.79 mm | 20 thru 24 = + 3.18 mm / - 0.79 mm
Wall Thickness All Diameters = - 12.5% + tolerance not specified	Length + 6.40 mm / - 0 mm	Weight Weight = + 10% / - 1.5%

Test:
Hardness Test
Flattening Test
Pitting Resistance Test
Chemical Analysis – Spectro Analysis
Micro and MacroTest
Flaring TestIntergranular Corrosion (IGC) Test
Mechanical Testing Such as Tensile of Area
Positive Material Identification (PMI Testing)

Applicaiton:
Oil Tube, Gas Tube, Fluid Tube, Boiler and Heat exchanger