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Ferritic / Austentic Seamless Stainless Steel Pipe , ASTM Stainless Steel Pipe

Categories Seamless Stainless Steel Pipe
Brand Name: TIPTOP
Model Number: ASTM A789
Certification: MTC
Place of Origin: China
MOQ: 500kg or negotiable
Payment Terms: L/C, T/T
Delivery Time: 50000 tons per month
Packaging Details: wooden box
Steel: Ferritic and Austentic Steel
Standard: ASTM A789
Structure: Seamless
Condition: Heat Treated
Resistance: stress corossion cracking
Grade: S31803, S31500, S32205, S32750, S32760, S31500, 32001, S32003, S32304
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Ferritic / Austentic Seamless Stainless Steel Pipe , ASTM Stainless Steel Pipe

Ferritic / Austentic Seamless Stainless Steel Pipe , ASTM Stainless Steel Pipe


Duplex stainless steels are extremely corrosion resistant, work hardenable alloys. Their microstructures consist of a mixture of austenite and ferrite phases. As a result, duplex stainless steels display properties characteristic of both austenitic and ferritic stainless steels. This combination of properties can mean some compromise when compared with pure austenitic and pure ferritic grades.
Duplex stainless steels are in most cases, tougher than ferritic stainless steels. Strengths of duplex stainless steels can in some cases be double that for austenitic stainless steels.
Whilst duplex stainless steels are considered resistant to stress corrosion cracking, they are not as resistant to this form of attack as ferritic stainless steels. However, the corrosion resistance of the least resistant duplex stainless steels is greater than that for the most commonly used grades of stainless steels, i.e. 304 and 316.
Duplex steels are also magnetic, a property that can be used to easily differentiate them from common austenitic grades of stainless.


1. Standards:
ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service


2. Application:

Chemical processing, transport and storage,

Oil and Gas exploration and processing equipment,

Marine and other high chloride environments,

Pulp and paper digesters, liquor tanks and paper machines.


3. Ordering Information

Quantity (feet, meters, or number of lengths),

Name of product (seamless or welded tubes)

Grade (S31803, S31500, S32205, S32750, S32760, S31500, 32001, S32003, S32304, etc)

Size (outside diameter and average wall thickness, unless minimum wall thickness is specified),

Length (specific or random)

Optional requirements (for product analysis; for hydrostatic or nondestructive electric test),

Test report required

Special requirements


4. Chemical Requirements

UNS DesignationCMnPSSiNiCrMoNCuOthers
S315000.031.20-2.000.030.031.40-2.004.3-5.218.0-19.02.5-3.000.05-0.1
S318030.0320.030.0214.5-6.521.0-23.02.5-3.50.08-0.20
S320010.034.00-6.000.040.0311.0-3.019.5-21.50.60.05-0.171
S320030.0320.030.0213.0-4.019.5-22.51.50-2.000.14-0.20
S322050.0320.030.0214.5-6.522.0-23.03.0-3.50.14-0.20
S323040.032.50.040.0413.0-5.521.5-24.50.05-0.600.05-0.200.05-0.60
S327500.031.20.0350.020.86.0-8.024.0-26.03.0-5.00.24-0.320.5
S327600.0510.030.0116.0-8.024.0-26.03.0-4.00.20-0.300.50-1.000.50-1.00

5. Tensile and Hardness Requirements

Tensile and Hardness Requirements

UNS Designation

Tensile Strength, min, ksi (Mpa)

Yield Strength, min, ksi (Mpa)

Elongation in 2 in. or 50mm, min, %

Hardness, max.

HBW

HRC

S31500

92 (630)

64 (440)

30

290

30

S31803

90 (620)

65 (450)

25

290

30

S32001

90 (620)

65 (450)

25

290

30

S32003
Wall≤0.187‘’ (5.0mm)

100 (690)

70 (485)

25

290

30

S32003
Wall>0.187‘’ (5.0mm)

95 (655)

65 (450)

25

290

30

S32205

95 (655)

70 (485)

25

290

30

S32304
OD 1 in. (25mm) and Under

100 (690)

65 (450)

25

S32304
OD over 1 in. (25mm)

87 (600)

58 (400)

25

290

30

S32750

116 (800)

80 (550)

15

300

32

S32760

109 (750)

80 (550)

25

310

32


6. Available Size Range

OD

Thickness

mm

inch

mm

SCH

10.3~914

1/8’’~36’’

0.5~70

All

*If the steel grades and size you are looking for are not listed above, please contact us for further information.



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