ASTM A335 Pipe, ASTM A335 Gr P22, ASTM A335

Seamless Steel Pipe

ASTM A335 Steel Tube

ASTM A335 is a seamless ferritic alloy-steel pipe used for high-temperature applications. 

Diameter: 16-1016mm

Thickness: 2---120mm

Steel Grade: p1 p2 p5 p9 p11 p12 p22

Surface: Oiled, black painted to prevent rust

Application Fileds: The most common use of grades P11, P22, and P91 is in the power industry and petro-chemical plants, Grades P5 and P9 are commonly used in refineries.

Standard

Specification

ASTM A335 Alloy Steel Seamless Pipes are Carbon Steel Pipes with subsequent addition of chromium, molybdenum and sometimes vanadium are known as chrome moly Pipes. Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength. ASME Specification alloy steel Pipes are used for high temperature service applications. Seamless Alloy Steel Pipes according to ASTM A335 Grade P2 are reheated and furnished in full annlealed,isothermal annealed or normalised quenched and tempered condition. ASTM A335 Grade P2 Alloy Steel Seamless Pipes have a typical chemistry with additions of 0.50-0.81 Chromium and 0.44-0.65 Molybdenum. Bearing minimum tensile strength of 380 Mpa ASTM A335 Pipe have a minimum yield strength of 205 Mpa.

The composition chrome moly alloy steel pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures.


Characteristics:

  1. Strong resistance to rupturing at high temperatures and high pressures
  2. May be used for Hydrogen Sulfide Corrosion Services
  3. Resistant to cracking from hydrogen attack and embrittlement
  4. Resistant to hot sulfide corrosion cracking
  5. Can be used for NACE Applications where sour environments are under high temp and pressure
  6. Can be used in NACE-MRO 175 Sour Service
  7. Ideal for creep rupture applications
  8. Can handle high temperatures with very low elasticity


Chemical Composition:

These pipe bear high resistance to rupture at high temperature and pressures. With hydrogen crack resistance and sulfide stress corrosion cracking chrome moly pipe are highly preferred over Carbon pipe.

Grade

UN

C≤

Mn

P≤

S≤

Si≤

Cr

Mo

Sequiv.

P1

K11522

0.10~0.20

0.30~0.80

0.025

0.025

0.10~0.50

0.44~0.65

P2

K11547

0.10~0.20

0.30~0.61

0.025

0.025

0.10~0.30

0.50~0.81

0.44~0.65

P5

K41545

0.15

0.30~0.60

0.025

0.025

0.5

4.00~6.00

0.44~0.65

P5b

K51545

0.15

0.30~0.60

0.025

0.025

1.00~2.00

4.00~6.00

0.44~0.65

P5c

K41245

0.12

0.30~0.60

0.025

0.025

0.5

4.00~6.00

0.44~0.65

P9

S50400

0.15

0.30~0.60

0.025

0.025

0.50~1.00

8.00~10.00

0.44~0.65

P11

K11597

0.05~0.15

0.30~0.61

0.025

0.025

0.50~1.00

1.00~1.50

0.44~0.65

P12

K11562

0.05~0.15

0.30~0.60

0.025

0.025

0.5

0.80~1.25

0.44~0.65

P15

K11578

0.05~0.15

0.30~0.60

0.025

0.025

1.15~1.65

0.44~0.65

P21

K31545

0.05~0.15

0.30~0.60

0.025

0.025

0.5

2.65~3.35

0.80~1.60

P22

K21590

0.05~0.15

0.30~0.60

0.025

0.025

0.5

1.90~2.60

0.87~1.13

P91

K91560

0.08~0.12

0.30~0.60

0.02

0.01

0.20~0.50

8.00~9.50

0.85~1.05

P92

K92460

0.07~0.13

0.30~0.60

0.02

0.01

0.5

8.50~9.50

0.30~0.60


Tensile Requirements:

Tensile Strength, min., psi

P-5

P-9

P-11

P-22

P-91

ksi

60

60

60

60

85

MPa

415

415

415

415

585

Yield Strength, min., psi






ksi

30

30

30

30

60

MPa

205

205

205

205

415

Note: P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].


Mechanical Properties:

Mechanical properties

P1,P2

P12

P23

P91

P92,P11

P122

Tensile strength

380

415

510

585

620

620

Yield strength

205

220

400

415

440

400


Heat Treatment Requirements:

Grade

Heat Treatment Type

Normalizing Temperature Range F [C]

Subcritical Annealing or Tempering

P5, P9, P11, and P22

Temperature Range F [C]

A335 P5 (b,c)

Full or Isothermal Anneal




Normalize and Temper

*****

1250 [675]


Subcritical Anneal (P5c only)

*****

1325 – 1375 [715 - 745]

A335 P9

Full or Isothermal Anneal




Normalize and Temper

*****

1250 [675]

A335 P11

Full or Isothermal Anneal




Normalize and Temper

*****

1200 [650]

A335 P22

Full or Isothermal Anneal




Normalize and Temper

*****

1250 [675]

A335 P91

Normalize and Temper

1900-1975 [1040 - 1080]

1350-1470 [730 - 800]


Quench and Temper

1900-1975 [1040 - 1080]

1350-1470 [730 - 800]

Process

1. Nominal Steel Pipes Can Be Hot-Finished Or Cold-Drawn, And Have Undergone The Final Heat Treatment Required By The Standard.
2. P2 And P12 Grade Steel. These Two Grades Of Steel Should Be Manufactured Using The Coarse Grain Melting Process.

Packing

  • Wooden case packing + steel belts bundled + two nylon slings

    Wooden case packing + steel belts bundled + two nylon slings

  • Wooden case packing + steel belts bundled

    Wooden case packing + steel belts bundled

We use cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from,This behavior is in compliance with the user consent policy.