ASTM A 335 / A691 GR P11 Alloy Steel Seamless & EFW Pipes
Seamless Ferritic Alloy-Steel P11 Pipe, Global Supplier of High Quality Alloy Steel P11 Seamless Pipe, Alloy Steel UNS K11597 Pipes, A335 P11 Alloy Steel Seamless Pipe, ASME SA335 Grade P11 Alloy Steel Pipe Supplier in Mumbai, India.
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IBR NACE MR0175 ASTM A 335 GR P11 ALLOY STEEL SEAMLESS PIPES
ASTM A 335 GR P11 Wall Thickness available: Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk.
ASTM A 335 GR P11 Alloy Steel Seamless Pipe :
ASTM A 335 GR P11 Other Materials Testing :
ASTM A 335 GR P11 Dimensions :
ASTM A 335 GR P11 Heat Treatment Requirements
|
P5, P9, P11, and P22 |
|
|
Grade |
Heat Treatment Type |
Normalizing Temperature Range F [C] |
Subcritical Annealing |
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) | ||
