duplex pipe S31803 ,S32205,S32520 ASTM A789,ASTM A790

Duplex stainless steel pipes are becoming more and more common. Due to its excellent resistance to chloride stress corrosion cracking, high thermal conductivity, and a low coefficient of thermal expansion, duplex stainless steel pipe are being offered by all the major stainless steel mills.

 

Specification

Size OD: 6.0 ~ 406.4mm; WT: 1 ~ 50mm;

O.D.1/8”-16”;W.T.:SCH 10(S);-SCH XXS

Length: as your requirement,11.8M MAX

Process Seamless
Grade  S31803,  S32205, S32520,S32750,S32760
Standard ASTM A789, ASTM A790
Surface Aid Pickling, Polishing(180#, 220#, 240#, 320#, 400#,)
Theoretical Weight(kg/m) Weight/meter = (OD-WT)*WT*0.02507    Both OD and WT in mm.

 

Note:
OD is the specified outside diameter.
WT is the specified wall thickness

 

Chemical Composition

UNS

C

Mn

P

S

Si

Ni

Cr

Mo

N

Cu

Others

S31803

0.030

2.00

0.030

0.020

1.00

4.5-6.5

21.0-23.0

2.5-3.5

0.08-0.20

S32205

0.030

2.00

0.030

0.020

1.00

4.5-6.5

22.0-23.0

3.0-3.5

0.14-0.20

S32520

0.030

1.50

0.035

0.020

0.80

5.5-8.0

24.0-26.0

3.0-5.0

0.20-0.356

0.5-3.00

S32750

0.030

1.20

0.035

0.020

0.80

6.0-8.0

24.0-26.0

3.0-5.0

0.24-0.32

0.5

S32760

0.05

1.00

0.030

0.010

1.00

6.0-8.0

24.0-26.0

3.0-4.0

0.20-0.30

0.50-1.00

W0.50-1.00

Note A: Maximum, unless a range or minimum is indicated. Where ellipses(…) appear in this table, there is no minimum and analysis for the element need not to be determined or reported.

 

Tensile and Hardness

UNS Designation

Tensile Strength, min MPa

Yield Strength, min MPa

Elongation in 50mm min, %

Hardness, Max

       

HBW

HRC

S31803

620

450

25

290

30

S32205

655

450

25

290

30

S32520

770

550

25

310

S32750

800

550

15

300

32

S32760

750

550

25

300

 

Tolerances

Group

Size, Outside Diameter, mm

Tolerances in Outside Diameter, mm

Average Wall Tolerance in Wall Thickness, %

Minimum Wall Tolerances in Wall Thickness, %

Tolerances in Cut Length, mm

Thin Wall Tubes

Over

Under

Over

Under

1

Up to 12.7, excl

±0.13

±15

30

0

3

0

2

12.7 to 38.0, excl

±0.13

±10

20

0

3

0

Less than 1.6mm specified

3

38.1 to 88.9, excl

±0.25

±10

20

0

5

0

Less than 2.4mm specified

4

88.9 to 139.7, excl

±0.38

±10

20

0

5

0

Less than 3.8mm specified

5

139.7 to 203.2, excl

±0.76

±10

20

0

5

0

Less than 3.8mm specified

 

Packing Information
BUNDLE PACKAGE

WOODEN CASE

PLASTIC PACKAGE