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ASTM A790 S31803 Duplex Steel Seamless Pipe Resistant To Seawater Corrosion

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ASTM A790 S31803 Duplex Steel Seamless Pipe Resistant To Seawater Corrosion

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Brand Name :	YUHONG
Model Number :	ASTM A790 S31803
Certification :	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
Payment Terms :	L/C, T/T
Supply Ability :	According To Client's Request
Delivery Time :	10-90 Days
Price :	NEGOTIABLE

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ASTM A790 S31803 Duplex Steel Seamless Pipe Resistant To Seawater Corrosion

ASTM A790 S31803 Duplex Steel Seamless Pipe

ASTM A790 S31803 is a specification for seamless duplex steel pipes. Duplex steel is a type of stainless steel that contains both austenitic and ferritic microstructures, providing excellent strength and corrosion resistance.

Seamless pipes are manufactured without any welding seams, which makes them more reliable and suitable for high-pressure and high-temperature applications.

These pipes are commonly used in industries such as oil and gas, chemical processing, and marine engineering. They are known for their superior performance in harsh environments and are highly resistant to corrosion, pitting, and cracking.

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

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 S31803 / 2205	621	448	25	31 max	293 max

Physical Properties OF ASTM A790 UNS S31803 Duplex Stainless Steel Seamless Pipes

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 S31803 / 2205	782	190	13.7	14.2	-	19	-	418	850

Grade Specification Comparison

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 A790 UNS S31803 Duplex Stainless Steel Seamless Pipes Application

1. Oil and gas industry
2. Chemical processing industry
3. Power generation industry
4. Water treatment industry
5. Marine industry
6. Food processing industry

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