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ASTM A335 steel pipe

ASTM A335 steel pipe

astm-a335-steel-pipe

ASTM A335 is a ASTM standard specifies Seamless Ferritic Alloy Steel Pipe
for High-Temperature Service. ASTM A335 pipe ordered to this specification
shall be suitable for bending and similar forming operations, and for fusion
welding. Selection will depend upon design, service conditions, mechanical
properties, and high-temperature characteristics.

Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service.
Standards: ASTM A335/335M(ASME SA335/SA335M)

Size (mm):

  • Outer
    Dimensions:19.05mm~114.3mm
  • Wall
    Thickness:2.0mm~14 mm
  • Length: max16000mm

Application: Seamless Ferritic Alloy-Steel Pipe for High-Temperature
Service.

The main products of steel / steel grade: P11; P12; P22; P5;.

Packing: Bare packing/bundle packing/crate packing/wooden protection at
the both sides of tubes and suitably protected for sea-worthly delivery or as
requested.

Inspection and Test: Chemical Composition Inspection, Mechanical
Properties Test(Tensile Strength,Yield Strength, Elongation, Flaring,
Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test,No-destructive
Test, Hydrostatic Test.

Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot
Blasting.

Both ends of each crate will indicate the order no., heat no., dimensions,
weight and bundles or as requested.

This specification covers seamless ferritic alloy-steel pipe for
high-temperature service. The pipe shall be suitable for bending, flanging, and
similar forming operations, and for fusion welding. The steel material shall
conform to chemical composition, tensile property, and hardness requirements.
Each length of pipe shall be subjected to the hydrostatic test. Also, each pipe
shall be examined by a non-destructive examination method in accordance to the
required practices. The range of pipe sizes that may be examined by each method
shall be subjected to the limitations in the scope of the respective practices.
The different mechanical test requirements for pipes, namely, transverse or
longitudinal tension test, flattening test, and hardness or bend test are
presented.

Mainly Grade of ASTM A335

ASTM A335 P11, P22, P5, P9, P91, P92

Chemical Composition (%) for the main grade

Grade

C

Mn

P, S, max

Si

Cr

Mo

P11

0.05-0.15

0.30-0.60

0.025

0.50-1.00

1.00-1.50

0.44-0.65

P22

0.05-0.15

0.30-0.60

0.025

0.50 max

1.90-2.60

0.87-1.13

P5

0.15 max

0.30-0.60

0.025

0.50 max

4.00-6.00

0.45-0.65

P9

0.15 max

0.30-0.60

0.025

0.25-1.00

8.00-10.00

0.90-1.10

P91

0.08-0.12

0.30-0.60

0.020/0.010

0.20-0.50

8.00-9.50

0.85-1.05

 

V 0.18-0.25

N 0.03-0.07

Ni 0.40 max

Al 0.02 max

Nb 0.06-0.10

Ti 0.01 max

P92

0.07-0.13

0.30-0.60

0.020/0.010

0.50 max

8.50-9.50

0.30-0.60

 

V 0.15-0.25

N 0.03-0.07

Ni 0.40 max

Al 0.02 max

Nb 0.04-0.09

W 1.50-2.00

 

 

 

 

B 0.001-0.006

Ti 0.01 max

Zr 0.01 max

Mechanical Properties

Data

Grade P11, P22, P5, P9

Grade P91

Grade P92

Tensile strength, min, (MPa)

415

585

620

Yield strength, min, (MPa)

205

415

440

Elongation, min, (%), L/T

30/20

20/…

20/…

 

Heat Treatment

A / N+T

N+T / Q+T

N+T

Material & Manufacture

Pipe may be either hot finished or cold drawn with the finishing heat
treatment noted below.

Heat Treatment Requirements

Grade

Heat Treatment Type
P5, P9, P11, and P22

Normalizing Temperature Range F [C]

Subcritical Annealing or Tempering
Temperature Range F [C]

P5 (b,c)

Full or Isothermal Anneal

 

 

 

Normalize and Temper

*****

1250 [675]

 

Subcritical Anneal (P5conly)

*****

1325 – 1375 [715 – 745]

P9

Full or Isothermal Anneal

 

 

 

Normalize and Temper

*****

1250 [675]

P11

Full or Isothermal Anneal

 

 

 

Normalize and Temper

*****

1200 [650]

P22

Full or Isothermal Anneal

 

 

 

Normalize and Temper

*****

1250 [675]

P91

Normalize and Temper

1900-1975 [1040 – 1080]

1350-1470 [730 – 800]

 

Quench and Temper

1900-1975 [1040 – 1080]

1350-1470 [730 – 800]

Mechanical Tests Specified

Transverse or Longitudinal Tension Test and Flattening Test, Hardness
Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of
the pipe from each treated lot. For small lots, at least one pipe shall be
tested.
For material heat treated by the continuous process, tests shall be made on a
sufficient number of pipe to constitute 5% of the lot, but in no case less than
2 pipe.

Notes for Hardness Test:
P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].

Notes for Bend Test:
For pipe whose diameter exceeds NPS 25 and whose diameter to wall thickness
ratio is 7.0 or less shall be subjected to the bend test instead of the
flattening test.
Other pipe whose diameter equals or exceeds NPS 10 may be given the bend test
in place of the flattening test subject to the approval of the purchaser.
The bend test specimens shall be bent at room temperature through 180 without
cracking on the outside of the bent portion.

Hydrostatic Test

The inside diameter of the bend shall be 1 inch [25 mm].
Each length of pipe shall be Hydro tested, at option of manufacture
nondestructive electric testing can be used.

Ordering Information

Orders for material under this specification should include the following,
as required, to describe the desired material adequately:

Quantity

Feet, meters, or number of lengths

Name of material

Seamless Alloy Steel Pipe

Grade

P5, P9, P11, P22, P91

Manufacture

Hot-finished or cold-drawn

Size using one of the following:

NPS and Schedule Number

Outside Diameter and Nominal Wall Thickness

Outside Diameter and Minimum Wall Thickness

Inside Diameter and Nominal Wall Thickness

Inside Diameter and Minimum Wall Thickness

Length

Specific or Random

End Finish

Referenced Documents

  • A999/A999MSpecification for
    General Requirements for Alloy and Stainless Steel Pipe
  • E213 Practice
    for Ultrasonic Examination of Metal Pipe and Tubing
  • E309 Practice
    for Eddy-Current Examination of Steel Tubular Products Using Magnetic
    Saturation
  • E381 Method
    of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
  • E527 Practice
    for Numbering Metals and Alloys in the Unified Numbering System (UNS)
  • E570 Practice
    for Flux Leakage Examination of Ferromagnetic Steel Tubular Products
  • B36.10MWelded and
    Seamless Wrought Steel Pipe
  • SAE J 1086
    Practice for Numbering Metals and Alloys (UNS)
  • SNT-TC-1ARecommended Practice
    for Nondestructive Personnel Qualification and Certification

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