Name: ASTM A789 UNS S31803 Duplex Steel Tube 2205 Seamless Tubing
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A789 UNS S31803 Duplex Steel Seamless Tube
Price: 120000.00 USD
Availability: InStock

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ASTM A789 UNS S31803 Duplex Steel Tube 2205 Seamless Tubing

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, LR, GL, DNV, NK, TS, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A789 UNS S31803 Duplex Steel Seamless Tube

Payment & Shipping Terms:

Minimum Order Quantity:	500kgs
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time:	7 DAYS
Payment Terms:	L/C, T/T

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Detailed Product Description

Product Name:	Duplex Steel Tube	Specification:	ASTM A789, ASME SA789
Grade:	UNS S31803, UNS S32205, UNS S32750, S32760	OD:	1/4" - 6"
WT:	0.02"-0.5"	Length:	Single Random, Double Random & Cut Length
Type:	Seamless Or Welded	End:	Plain End, Beveled End
Application:	Heat Exchanger, Oil And Gas, Marine Environments, And Desalination Plants
Highlight:	ASTM A789 Duplex Steel Tube , 2205 Duplex Steel Tube , UNS S31803 Duplex Steel Tube

2205 ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Tube

Duplex S31803 is also known as UNS S32205, referring to its composition of approximately 22% chromium, 5% nickel, 3% molybdenum, and 2% nitrogen. A789 S31803 tubes are classified as "duplex" stainless steel, which means they have a two-phase microstructure consisting of both austenite and ferrite. This dual-phase structure provides a combination of high strength and excellent corrosion resistance, making it suitable for demanding applications.

Equivalent Grade of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	Japanese JIS
2205	S31803 / S32205	318S13	-	1.4462	X2CrNiMoN22-5-3	2377	SUS 329J3L

Physical Properties of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Co-eff of Thermal Expansion (μm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C ( J/kg.K)	Electrical Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	at 100°C	at 500°C
UNS S32205 / 2205	782	190	13.7	14.2	-	19	-	418	850

Mechanical Composition of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
				Rockwell C (HR C)	Brinell (HB)
UNS S32205 / 2205	621	448	25	31 max	293 max

Chemical Composition of ASTM A789 UNS S31803 Duplex Stainless Steel Tubes

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
2205 (UNS S31803)	Min Max	- 0.030	- 2.00	- 1.00	- 0.030	- 0.020	21.0 - 23.0	2.5 - 3.5	4.5 - 6.5	0.08 - 0.20
2205 (UNS S32205)	Min Max	- 0.030	- 2.00	- 1.00	- 0.030	- 0.020	22.0 - 23.0	3.0 - 3.5	4.5 - 6.5	0.14 - 0.20

Here are some of the key advantages of using duplex S31803 tubes:

Corrosion Resistance: Duplex S31803 tubes exhibit excellent resistance to corrosion in various environments, including chloride-containing and acidic environments, making them suitable for harsh industrial applications.
High Strength: These tubes have higher strength compared to austenitic stainless steels, allowing for thinner wall thicknesses and lighter weight designs while maintaining structural integrity.
Good Toughness: Duplex S31803 tubes offer good toughness, making them suitable for applications where impact resistance is important.
Good Weldability: They have good weldability characteristics, which simplifies the fabrication process and reduces the risk of welding defects.
High Temperature Resistance: Duplex S31803 tubes can withstand high temperatures, making them suitable for applications in elevated temperature environments.
Cost-Effective: Despite their superior properties, duplex S31803 tubes are relatively cost-effective compared to other high-performance materials.
Low Thermal Expansion: These tubes have low thermal expansion coefficients, which helps reduce the risk of thermal distortion in applications involving temperature fluctuations.
Erosion Resistance: Duplex S31803 tubes offer good resistance to erosion and erosion-corrosion, making them suitable for applications where abrasive substances are present.