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Name: | ASTM A335 P22 Alloy Steel Seamless Pipes |
Specification: | ASTM A335 |
Size: | 1/2" to 120" |
Rating: | SCH10 To SCHXXS |
Steel Grade: | A335 P5, P9. P11, P22, P91, P92 |
MOQ: | 100 KGS |
Packing: | Standard seawory/airworthy packing |
End: | Plain ends or bevelled ends |
Delivery term: | FOB, CIF, CNF, EXW |
Payment term: | TT or L/C at sight |
Loading Port: | XINGANG |
Deliver mode: | By sea, By air, By land |
1/4” Nominal to 24”O.D. Seamless Alloy Pipe
Wall Thickness – Schedule 40 through XXH
SA335 & A335 – Grades P5, P9, P11, P22, P91, P92
A691 1-1/4 Chrome through 9 Chrome (Welded Alternative to A335)
This specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high-temperature service. ASTM A335 pipe ordered to this specification shall be suitable for fusion welding, bending, flanging (vanstoning), and similar forming operations.
Pipe may be either hot finished or cold drawn with the finishing heat treatment noted below.
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] |
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 |
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 |
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) |
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 |
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 |