| Type | : | ASTM A335 P91 Steel pipe |
| Standard | : | ASTM A335 ,ASTM A213, ASTM A691,DIN17175 JIS G3458 |
| Dimension | : | 1/2in to 48in |
| Feature | : | Stock regular sizes, Customized forge, design as per ASME VIII OEM service, Customized heat treatment available. |
A335 P91 Pipe
Description
ASTM A335 P91 Alloy Steel Pipe
Specification :
| Size | : | 1/8NB TO 24NB IN |
| Standards | : | ASTM A 335, ASME SA 335, ANSI B36.10 |
| Type | : | Seamless |
| Specialized in | : | Large Diameter Size |
| Wall Thickness | : | Schedule 20 - Schedule XXS (heavier on request) up to 250 mm thk. |
| Form | : | Round, Square, Rectangular, Hydraulic Etc. |
| Length | : | Single Random, Double Random & Cut Length. |
| Tubing End | : | Plain End, Beveled End, Treaded. |
A335 Grade P91 Alloy Steel Pipe Chemical Compositions :
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % | V, % | N, % | Ni, % | Al, % | Nb, % |
| 0.08-0.12 | 0.3-0.6 | 0.02 max | 0.01 max | 0.2-0.5 | 8.0-9.5 | 0.85-1.05 | 0.18-0.25 | 0.03-0.07 | 0.4 max | 0.04 max | 0.06-0.10 |
UNS K91560 Seamless Pipes Mechanical Properties :
| Tensile Strength , MPa | Yield Strength, MPa | Elongation, % | Hardness, HB |
| 585 min | 415 min | 20 min | 250 max |
SA335 P91 Alloy Steel Seamless Pipes 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] |
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 | |
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) | ||
Types Of Alloy Steel ASTM a335 p5 70/30 Pipes & Tubes :
• Alloy Steel P5 Seamless Pipes & Tubes
• Alloy Steel P5 Welded Pipes & Tubes
• Alloy Steel P5 Erw Pipes & Tubes
• Alloy Steel P5 Efw Pipes & Tubes
• Alloy Steel P5 Fabricated Pipes & Tubes
• Alloy Steel P5 Welded Pipes & Tubes
• Alloy Steel P5 Erw Pipes & Tubes
• Alloy Steel P5 Efw Pipes & Tubes
• Alloy Steel P5 Fabricated Pipes & Tubes
• Alloy Steel P5 Square Pipes & Tubes
• Alloy Steel P5 Rectangular Pipes & Tubes
• Alloy Steel P5 Round Pipes & Tubes
• Alloy Steel P5 High Pressure Pipes & Tubes
• Alloy Steel P5 Rectangular Pipes & Tubes
• Alloy Steel P5 Round Pipes & Tubes
• Alloy Steel P5 High Pressure Pipes & Tubes
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