ASTM A789 Tubing, Tubi ASME SA789 Duplex Steel Pipe/Tube

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ASTM A789/A789M, 2022 Edition, March 1, 2022 - Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service.

Tubi ASME SA789/ASTM A789 Tubing By Yuhong

ASTM A789/Tubi ASME SA789 Duplex Steel Pipe/Tube

YUHONG GROUP provides the best ASTM A789/ASME SA789 duplex tubing solutions including straight tube and U tube.

ASTM A789/ASME SA789 UNS S31500 Duplex Steel Pipe/Tube

ASTM A789 UNS S31803 Duplex Steel Pipe/Tube

ASTM A789/ASME SA789 UNS S32205 Duplex Steel Pipe/Tube

ASTM A789/ASME SA789 UNS S32750 Duplex Steel Pipe/Tube

ASTM A789/ASME SA789 UNS S32760 Duplex Steel Pipe/Tube

ASTM A789/Tubi ASME SA789 Duplex Steel Pipe/Tube

ASTM A789/ASME SA789 Duplex Tubing Features

ASTM A789/ASME SA789 is the specification for seamless and welded ferritic / Austenitic stainless steel tubing for general service use. If specified on the order, the wall thickness of this kind of duplex stainless steel tube can be the minimum wall thickness. Generally, it requires average wall thickness.
A789 tubing covers the stainless steel tubing for service that required general corrosion resistance, also with a particular emphasis on the resistance to stress corrosion cracking.

ASTM A789 Ferritic/Austenitic Tube Type

ASTM A789 Specification				ASTM A789/ASME SA789
ASTM A789 Application				For Services Requiring general corrosion resistance
ASTM A789Tube Size in Outside Diameter				Up to 8 in. [203.2 mm] inclusive
ASTM A789 Tubing Length				Up to 6 mater, custom cut lengths
ASTM A789 Heat Exchanger Tube Thickness				Up to 0.79 inch[20 mm] inclusive

Tubi ASME SA789/ASTM A789 Tubing Chemical Compositions

UNS No.	ASTM A789 Ferritic/Austenitic Chemical Requirement(%)
UNS No.	C	Mn	P	S	Si	Ni	Cr	Mo	N	Cu	Other Named Elements
S31803	0.03	2.00	0.030	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	0.030	0.02	1.00	4.5-6.5	22.0-23.0	3.0-3.5	0.14-0.20	...	...
S32750	0.03	1.20	0.035	0.02	0.80	6.0-8.0	24.0-26.0	3.0-5.0	0.24-0.32	0.50	...
S32760	0.03	1.00	0.030	0.01	1.00	6.0-8.0	24.0-26.0	3.0-4.0	0.20-0.30	0.50-1.00	W 0.50-1.00
S31500	0.03	1.20-2.00	0.030	0.03	1.40-2.00	4.3-5.2	18.0-19.0	2.5-3.5	0.05-0.1	...	...

Tubi ASME SA789/ASTM A789 Tubing Tensile Requirement

UNS No.	Tensile Strength	Yield Strengh	Elongation
	min., ksi [MPa]	min., ksi [MPa]	min%
S31803	90 [620]	65 [450]	25%
S32250	95 [655]	70 [485]	25%
S31500	92 [630]	64 [440]	30%
S32550	110 [760]	80 [550]	15%
S31200	100 [690]	65 [450]	25%
S31260	100 [690]	65 [450]	25%
S32750	116 [800]	80 [550]	15%
S32760	109 [750]	80 [550]	25%

ASTM A789 Duplex Tubes Application

You can see the application of ASTM A789 tubing in Chemical, Pharmaceutical & Bio-Medical, Petrochemical & Refinery, Environmental, Food Processing, Aviation, Chemical Fertilizer, Sewage Disposal, Desalination, Waste Incineration, etc.

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