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Product Details:
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Description: Alloy steel pipe, alloy seamless steel pipe, alloy welded pipe,seamless alloy steel pipe,alloy pipe,alloy steel tube
Standard:ASTM A335,JIS G3458,JIS A3462,DIN17175,GB5310,GB9948
ASTM/AME A335 P1/P5/P9/P11/P12/P22/ P91/P92 Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service
Material:ASTM A335 P2, ASTM A335 P12, ASTM A335 P11, ASTM A335 P22, ASTM A335 P5, ASTM A335 P91, ASTM A335 P92.
Outside Diameter:6 mm~1473mm
Wall thickness:1mm~160mm
Length:12m,11.8m,6m,5.8m or as your requirement
Application:Alloy steel pipe applies to petroleum, chemical industry, electric power, boiler, high temperature resistant, low temperature resistant, corrosion resistant steamless steel pipe used.
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Chemical Composition(%): |
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| Grade | UNS Designation | Composition, % | |||||||
| Carbon | Manganese | Phosphorus, | Sulfur | Silicon | Chromium | Molybdenum | Others | ||
| P1 | K11522 | 0.10–0.20 | 0.30–0.80 | 0.025 max | 0.025 max | 0.10–0.50 | --- | 0.44–0.65 | --- |
| P2 | K11547 | 0.10–0.20 | 0.30–0.61 | 0.025 max | 0.025 max | 0.10–0.30 | 0.50–0.81 | 0.44–0.65 | --- |
| P5 | K41545 | 0.15 max | 0.30–0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00–6.00 | 0.45–0.65 | --- |
| P9 | S50400 | 0.15 max | 0.30–0.60 | 0.025 max | 0.025 max | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 | --- |
| P11 | K11597 | 0.05–0.15 | 0.30–0.60 | 0.025 max | 0.025 max | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | --- |
| P12 | K11562 | 0.05–0.15 | 0.30–0.61 | 0.025 max | 0.025 max | 0.50 max | 0.80–1.25 | 0.44–0.65 | --- |
| P15 | K11578 | 0.05–0.15 | 0.30–0.60 | 0.025 max | 0.025 max | 1.15–1.65 | --- | 0.44–0.65 | --- |
| P21 | K31545 | 0.05–0.15 | 0.30–0.60 | 0.025 max | 0.025 max | 0.50 max | 2.65–3.35 | 0.80–1.06 | --- |
| P22 | K21590 | 0.05–0.15 | 0.30–0.60 | 0.025 max | 0.025 max | 0.50 max | 1.90–2.60 | 0.87–1.13 | --- |
| P23 | K41650 | 0.04–0.10 | 0.10–0.60 | 0.03 | 0.01 | 0.50 max | 1.90–2.60 | 0.05–0.30 | V 0.20–0.30 |
| Cb 0.02–0.08 | |||||||||
| B 0.0005–0.006 | |||||||||
| N 0.030 max | |||||||||
| Al 0.030 max | |||||||||
| W 1.45–1.75 | |||||||||
| 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 | V 0.18–0.25 |
| N 0.030–0.070 | |||||||||
| Ni 0.40 max | |||||||||
| Al 0.04 max | |||||||||
| Cb 0.06–0.10 | |||||||||
| P92 | K92460 | 0.07–0.13 | 0.30–0.60 | 0.02 | 0.01 | 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 0.04 max | |||||||||
| Cb 0.04–0.09 | |||||||||
| W 1.5–2.00 | |||||||||
| B 0.001–0.006 | |||||||||
Mechanical Properties
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Data |
Grade P11, P22, P5, P9 |
Grade P91 |
Grade P92 |
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Tensile strength, min, (MPa) |
415 |
585 |
620 |
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Yield strength, min, (MPa) |
205 |
415 |
440 |
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Elongation, min, (%), L/T |
30/20 |
20/… |
20/… |
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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
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Grade |
Heat Treatment Type |
Normalizing Temperature Range F [C] |
Subcritical Annealing or Tempering |
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P5 (b,c) |
Full or Isothermal Anneal |
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Normalize and Temper |
***** |
1250 [675] |
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Subcritical Anneal (P5c only) |
***** |
1325 – 1375 [715 - 745] |
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P9 |
Full or Isothermal Anneal |
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Normalize and Temper |
***** |
1250 [675] |
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P11 |
Full or Isothermal Anneal |
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Normalize and Temper |
***** |
1200 [650] |
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P22 |
Full or Isothermal Anneal |
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Normalize and Temper |
***** |
1250 [675] |
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P91 |
Normalize and Temper |
1900-1975 [1040 - 1080] |
1350-1470 [730 - 800] |
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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:
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Quantity |
Feet, meters, or number of lengths |
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Name of material |
Seamless Alloy Steel Pipe |
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Grade |
P5, P9, P11, P22, P91 |
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Manufacture |
Hot-finished or cold-drawn |
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Size using one of the following: |
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NPS and Schedule Number |
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Outside Diameter and Nominal Wall Thickness |
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Outside Diameter and Minimum Wall Thickness |
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Inside Diameter and Nominal Wall Thickness |
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Inside Diameter and Minimum Wall Thickness |
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Length |
Specific or Random |
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End Finish |
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Referenced Documents
Contact Person: admin
Tel: +8613031891590
