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

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Home Products Duplex Stainless Steel Tube

Duplex 2205 Seamless Tube , ASTM A789 UNS S31803 Duplex Steel Tube

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 Seamless Duplex Steel 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:	Duplex 2205 , UNS S31803	Size:	Can Custom
Length:	Single Random, Double Random & Cut Length	Tube End:	Plain End, Beveled End
Type:	Seamless, Welded
Highlight:	Duplex Stainless Steel Seamless Tube , Duplex 2205 Seamless Tubing , ASTM A789 UNS S31803 Duplex Stainless Steel Tube

ASTM A789 Duplex 2205 / UNS S31803 Seamless Duplex Stainless Steel Tube

Duplex S31803 is also known as UNS S32205. This type of tubing is characterized by its dual-phase microstructure, combining features of both austenitic and ferritic stainless steels. Despite its high-performance characteristics, Duplex S31803 tubing is relatively cost-effective compared to other high-alloy steels. Its durability and longevity contribute to lower maintenance costs and longer service life, providing a cost-efficient solution for many industrial applications.

ASTM A789 UNS S31803 Duplex Steel Tube Equivalent Grade

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

ASTM A789 UNS S31803 Duplex Steel Tube Chemical Composition

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

ASTM A789 UNS S31803 Duplex Steel Tube Physical Properties

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

ASTM A789 UNS S31803 Duplex Steel Tube Mechanical Composition

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

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.