ASTM A790 Uns S31803 Pipe, Uns S31803 Seamless Pipe

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: SA/A789 Uns S3180
• Usage: Pipeline Transport, Chemical Industry
• Section Shape: Round
• ASME SA789/SA789m: Uns S31803
• Transport Package: Wooden Case
• Specification: ASTM
• Trademark: C&N
• Origin: China
• Production Capacity: 1000tons/Month

Product Description

Product Description

 

ASME SA789/SA789M ( ASTMA789/A789M )
General use standard specification for seamless and Welded Ferritic / austenitic stainless steel tube
ASME SA790/SA790M ( ASTMA790/A790M )
Seamless and Welded Ferritic / austenitic stainless steel tube
 
1.Outer Diameter: 1/4" - 16" 
2.Wall thickness:1 mm-50mm 
3.Length: 6 metre or as per customer request 

Chemical Composition of ASTM A790 UNS S31803 Duplex Stainless Steel Seamless Pipes

Composition ranges for 2205 grade stainless steels

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 of ASTM A790 UNS S31803 Duplex Stainless Steel Seamless Pipes

The Typical Mechanical Properties of grade 2205 stainless steels are listed in the table below. Grade S31803 has similar Mechanical Properties to that of S32205.

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

The physical properties of grade 2205 stainless steels are tabulated below. Grade S31803 has similar physical properties to that of S32205.

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

the grade comparison for 2205 stainless steels. The values are a comparison of functionally similar materials. Exact equivalents may be obtained from the original specifications.

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

Possible Alternative Grades

Given below is a list of possible alternative grades, which may be chosen in place of 2205.

Grade	Reasons for choosing the grade
904L	Better formability is needed, with similar corrosion resistance and lower strength.
UR52N+	High resistance to corrosion is required, e.g. resistance to higher temperature seawater.
6%Mo	Higher corrosion resistance is required, but with lower strength and better formability.
316L	The high corrosion resistance and strength of 2205 are not needed. 316L is lower cost.

Chemical Composition

	C	Mn	P	S	Cr	Mo	Si	Ni	N
S 31803	Min %					21,00	2,50		4,50	0,08
Max %	0,030	2,00	0,030	0,020	23,00	3,50	1,00	6,50	0,20
ASTM A 790 (S 31803)
1.4462	Min %					21,00	2,50		4,50	0,100
Max %	0,030	2,00	0,035	0,015	23,00	3,50	1,00	6,50	0,220

Physical properties

Property	Value
Density: kg/dm3	7,8
Hardness: HB 30	<=270
Brinell Hardness Rockwell C	290 (S 31803-ASTM A 790) 30,5 (S 31803-ASTM A 790)