ASTM A335 Alloy Steel Pipes Chrome Moly Pipes

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ASTM A335 Alloy Steel Pipes Chrome Moly Pipes


We are leading manufacturer and stockiest of ASTM A335 Alloy Steel Pipes in China.


ASTM A335 Alloy Steel Pipes Specifications: 

Size: OD: 14-914mm WT: 1-35 mm.

Forging/hot rolling/ extrusion of steel.

Forging: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes

Finished goods condition: hot forging/hot rolling + annealing/normalizing + tempering/quenching + tempering/any conditions based on the customer's requirement

Surface conditions: scaled (hot working finish)/ground/rough machining/fine machining/based on the customer's requirement

Furnaces for metallurgical processing: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection for any inperfections or based on the customer's requirement.

UTS according to SEP 1921 C/c,D/d,E/e;A388 or GB/T 6402

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Mechanical Tests Specified of ASTM A335 Alloy Steel Pipes P12


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.

The inside diameter of the bend shall be 1 inch [25 mm].

Hydrostatic Test

Each length of pipe shall be Hydro tested, at option of manufacture, nondestructive electric testing can be used.


ASTM A335 Alloy Steel Pipes P22 Specification: 

ASTM A335 Alloy Steel Pipes P22 is ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, mechanical properties,and high-temperature characteristics.


Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603

Equivalent Material: T22, 10CrMo910, 10CrMo9-10, 1.7380, 11CrMo9-10, 1.7383


Manufacture

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


Heat Treatment

A / N+T

N+T / Q+T

N+T


Chemical Composition:

C, % Mn, %P,%S,%Si,%Cr,%Mo,%
0.05-0.150.30-0.600.025 max0.025 max0.50 max1.90-2.600.87-1.13


Mechanical Properties:

Tensile Strength , MPaYield Strength, MPaElongation, %
415 min205 min30 min


ASTM A335 Alloy Steel Pipes P91 Heat Treatment Requirements

P5, P9, P11, and P22

Grade

Heat Treatment Type

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 (P5c only)

*****

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]


ASTM A335 Alloy Steel Pipes P91 Chemical Requirements


Grade

P-5

P-9

P-11

P-22

P-91

P-91 shall also include the following:

Element

UNS Designation

K41545

S50400

K11597

K21590

K91560

 

Carbon

0.15 max

0.15 max

0.05– 0.15

0.05– 0.15

0.08– 0.12

V at 0.18– 0.25

 

Manganese

0.30– 0.60

0.30– 0.60

0.30– 0.60

0.30– 0.60

0.30– 0.60

N at 0.030– 0.070

 

Phosphorous, max

0.025

0.025

0.025

0.025

0.020

Ni at 0.40 max

 

Sulfur, max

0.025

0.025

0.025

0.025

0.010

Al at 0.02 max

 

Silicon

0.50 max

0.25– 1.00

0.50– 1.00

0.50 max

0.20 -0.50

Cb at 0.06– 0.10

 

Chromium

4.00– 6.00

8.00– 10.00

1.00– 1.50

1.90– 2.60

8.00– 9.50

Ti at 0.01 max

 

Molybdenum

0.45 -0.65

0.90– 1.10

0.44– 0.65

0.87– 1.13

0.85– 1.05

Zr at 0.01 max




ASTM A335 Alloy Steel Pipes P91 Tensile Requirements

Seamless

P-5

P-9

P-11

P-22

P-91


Tensile Strength, min., psi

 

 

 

 

 

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

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

 



ASTM A335 Alloy Steel Pipes P91 Permissible Variation in Wall Thickness

NPS [DN] Designator

Tolerance, % from Specified

 

Over

 Under

1/8 to 2 1/2 [6 to 65] incl., all t/D ratios

20.0%

12.5%

Above 2 1/2 [65], t/D < or = 5%

22.5%

12.5%

Above 2 1/2 [65], t/D > 5%

15.0%

12.5%

(t = Specified Wall Thickness; D = Specified Outside Diameter)



ASTM A335 Alloy Steel Pipes P91 Elongation Requirements

Calculated Minimum Elongation Values

Elongation in 2 in. or 50 mm, min %

Wall Thickness

P5, P9, P11, P22

P91

in.

mm

Longitudinal

Transverse

Longitudinal

5/16 (0.312)

8

30

20

20

9/32 (0.281)

7.2

28

19

19

1/4 (0.250)

6.4

27

18

18

7/32 (0.219)

5.6

26

 

17

3/16 (0.188)

4.8

24

 

16

5/32 (0.156)

4

22

 

15

7/8 (0.125)

3.2

21

 

14

3/32 (0.094)

2.4

20

 

13

1/18 (0.062)

1.6

18

 

12


ASTM A335 Alloy Steel Pipes P91 Permissible Variations in Outside Diameter

Outside Diameter at any point shall not vary from standard specified more than:

NPS [DN] Designator

Over

Under

 

in.

mm

in.

mm

1/8 to 1 1/2 [6 to 40], incl.

1/64 (0.015)

0.40

1/64 (0.015)

0.40

Over 1 1/2 to 4 [40 to 100], incl.

1/32 (0.031)

0.79

1/32 (0.031)

0.79

Over 4 to 8 [100 to 200], incl.

1/16 (0.062)

1.59

1/32 (0.031)

0.79

Over 8 to 12 [200 to 300], incl.

3/32 (0.093)

2.38

1/32 (0.031)

0.79

Over 12 [300]

+/- 1% of the specified outside diameter


ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P1 with IBR Certified (ASTM A335 / A335M - 11 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)


This specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanges (vanishing), and similar forming operations, and for fusion welding. 


ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P1 Name: ASTM SA335 Alloy Steel Tubes for boilers, superheaters and heat exchangers


ASTM A335 ALLOY STEEL PIPES P2 Specifications

Size Range: 1/2" NB to 36" NB

Thickness Range: SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules

End Connections for Line Pipes: Plain, Bevel, Screwed, Threaded

Type: Seamless / ERW / Welded / Fabricated / CDW

Form: Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes

Length: Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths


Hardness and heat treatment specification of ASTM A335 ALLOY STEEL PIPES P5

Annealing hardness
     HBS

Cold pull hardness
     HBS

Preheating temperature
     ?

Quenching temperature
     ?

Holding time
     min

Hardening medium

Temper temperature
     ?

After tempering hardness
     =HRC

salt-bath furnace

controlled atmosphere furnace

235

262

788

1191

1204

5~15

air cooling

522

60


Steel plate/Sheet
     thickness / mm

sb
     MPa

ss
     =/MPa

d
     Samples from the standard for 50 mm (2 in)

180 ° of cold bending test

 

 

 

 

longitudinal

horizontal

Hot-rolled/Cold rolling:5 - 150

520

415

16~18

2a

3.5a

Note:
     (1) listed in the table apex diameter (d), to steel thickness (a) multiples said.
     (2) in the ASTM A6 standard specified scope can meet any additional conditions.
     (3) from the standard for 50 mm (2 in).
     ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P5 Mechanical properties
     ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P5 Mechanische Eigenschaften
     ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P5 Caracteristiques mecaniques
     ReH Minimum yield strength / Mindestwert der oberen Streckgrenze / Limite d'elasticite minimale
     Rm Tensile strength / Zugfestigkeit / Resistance a la traction
     A Minimum elongation / Mindestwert der Bruchdehnung / Allongement minimal
     J Notch impact test / Kerbschlagbiegeversuch / Essai de flexion par choc


ASTM A 335 STEEL PIPES ALLOY STEEL PIPES P9 Chemical composition % of the ladle analysis 


C(%)

Si(%)

Mn(%)

P(%)

S(%)

Cr(%)

Mo(%)

Max 0.15

0.25-1.00

0.30-0.60

Max 0.025

Max 0.025

8.00-10.00

0.90-1.10


ASTM A335 ALLOY STEEL PIPES P9 

Round bar:Diameter : 1mm-2000mm

Square bar:Size: 50mm * 50mm-600mm *600mm

Plate steel/flat bar:Size: Thickness: 0.1mm-800mm Width: 10mm to 1500mm

Tube/pipe: Size: OD: 6-219mm WT: 1-35 mm.

Cold-rolled sheet: Thickness: 2-5mm Width:1000mm Length: 2000mm

Hot-rolled sheet: Thickness:6-80mm Width: 210-610mm


The types of ASTM A335 ALLOY STEEL PIPES

12Cr1MoV

JIS G3458 STPA23

JIS G3462 STBA23

A335 P12

A369 FP12

A199 T11

A213 T11

15CrMo

JISG3458 STPA22

JISG3462 STBA22

A335 P12

A369 FP12

A213 T12

12Cr1MoV

JIS G3458 STPA23

JIS G3462 STBA23

A335 P12

A369 FP12

A199 T11

A213 T11

15CrMo

JISG3458 STPA22

JISG3462 STBA22

A335 P12

A369 FP12

A213 T12

GB 16Mo

JIS G3458 STPA12

JIS G3462 STBA12

JIS G3462 STBA13

ASTM A369 FP1

ASTM A A250-T1

ASTM A209-T1

DIN 17175 1.5414

DIN 17175 15Mo3

GB 12CrMo

JIS G3462 STBA20

GB Cr5Mo

JIS G3458 STBA25

JIS G3462 STPA26

JIS G3458 STBA26

JIS G3462 STPA25

ASTM A389-FP5

DIN17175 12CrMo195 1.7362 


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