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ASTM A335 P22 pipe specifications include seamless "chromium-molybdenum" alloy steel pipes and alloy steel pipes. Chromium is an important compound in stainless steel. Any steel containing 12% or more chromium is considered stainless steel. Unparalleled chromium resists oxidation at high temperatures.
It will significantly improve traction, performance, and toughness at room temperature, which is why the A335 alloy steel pipe makes it an ideal choice for power plants, refineries, petrochemical plants, and oilfield services, where fluids and gases are transported at high temperatures and pressures. These P22 alloy steel pipes are provided with black paint, anti-corrosion oil, and galvanized surface treatment according to consumer requirements. This alloy is known for its tensile strength, corrosion resistance, high-temperature resistance, and cost-effectiveness because it is used in power generation, oil refineries, and petrochemical applications. The petrochemical industry and factories. A335 P22 alloy steel pipe is usually suitable for bending, flanging, and other related forming operations and fusion welding. ASTM A335 P22 UNS K21590 is a molybdenum-chromium alloy steel part suitable for bending, crimping, and similar forming operations, as well as fusion welding procedures.
Specification of ASTM A335 P22 Alloy Steel Seamless Pipe
| Size | 1/8NB TO 24NB IN |
|---|---|
| Standards | ASTM A 335, ASME SA 335 |
| Type | Seamless |
| Specialized in | Large Diameter Size |
| Outer Dimensions | 19.05mm – 114.3mm |
| Wall Thickness | 2.0mm – 14 mm |
| Length | max 16000mm |
| Schedule | 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. |
Chemical Compositions of ASTM A335 P22 Alloy Steel Seamless Pipe
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
|---|---|---|---|---|---|---|
| 0.015 max | 0.30-0.61 | 0.025 max | 0.025 max | 0.50 max | 1.90-2.60 | 0.87-1.13 |
Mechanical Properties of ASTM A335 P22 Alloy Steel Seamless Pipe
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
|---|---|---|
| 415 min | 205 min | 30 min |
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 of ASTM A335 P22 Alloy Steel Seamless Pipe
|
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 |
|
