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ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes

 Home / ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes

IBR NACE MR0175 ASTM A 335 GR P11 ALLOY STEEL SEAMLESS PIPES

Silver Tubes is one of the oldest Manufacturer, Exporter and Supplier of High Quality ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes . We provide a wide range of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes in Seamless, Welded, SAW, LSAW, DSAW etc. Our range comprises of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes . Available in different dimensions & grades, these ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes are widely used in different industries like Dairy, Food processing, engineering, construction and many more. We also offer competitive range of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes as per client’s requirement. Silver Tubes is Approved Manufacturer & supplier of ASTM A 335/ A691 GR P11 Alloy Steel Seamless & EFW Pipes.

ASTM A 335 GR P11 ALLOY STEEL SEAMLESS PIPES supplier in india

  • ASTM A 335 GR P11 Sizes (Seamless): 1/2” NB - 24” NB
  • ASTM A 335 GR P11 Wall Thickness available: Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
  • ASTM A 335 GR P911 Material Grades :
  • ASTM A 335 GR P11 Alloy Steel Seamless Pipe :
  • ASTM A 335 GR P11 Other Materials Testing :
  • NACE MR0175, H2 SERVICE, IBR, etc.
  • ASTM A 335 GR P11 Dimensions :

All Pipe is manufactured and inspected/tested to the relevant standards including ASTM, ASME, API.


ASTM A 335 GR P11 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 A 335 GR P11 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 A 335 GR P11 Tensile Requirements

Seamless
P-5 P-9 P-11 P-22 P-91 P91 shall not have a hardness not exceeding 250 HB/265 HV [25HRC].
Tensile Strength, min., psi
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 A 335 GR P11 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)