Introduction of ASME SA335 P9 Alloy Steel Seamless Pipe
ASME SA335 P9 is a specification for seamless ferritic alloy-steel pipe used in high-temperature services. The pipes are commonly used in power plants, refineries, petrochemical plants, and other industries where high-temperature and high-pressure conditions exist.
ASME SA335 P9 Alloy Steel Seamless Pipes Certified and Tested in accordance with Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc.
Savoy Piping Inc.we carry a full inventory of ASME SA335 P9 Pipe and Supply ASME SA335 P9 Alloy Steel Seamless Pipe products in a variety of sizes to meet the High temperature service requirements for applications the Power Plants, Petro Chemical Plants and Refineries industries. ASME SA335 P11 Alloy Steel Seamless Pipes steel pipe can be structural in nature or used in fluid and oil transmission.
We Supply SA335 P9 Alloy Steel Seamless Pipes in ASME SA335 Grade P5, ASME SA335 Grade P9, ASME SA335 Grade P11, ASME SA335 Grade P22, ASME SA335 Grade P91, ASME SA213 Grade T5, ASME SA213 Grade T9, ASME SA213 Grade T11, ASME SA213 Grade T22, ASME SA213 Grade T91.The grade indicates the testing methods required for a given application. It is critical that structural grades of Carbon Steel Pipe not be used for Pressure or Fluid applications.
Savoy Piping Inc. specializes in ASME SA335 P9 Alloy Steel Pipe .With years of Experience in Manufacturing ASME SA335 Grade P9 Alloy Steel Seamless Pipe we offer high quality, lower cost but the best service. As a result to that our ASME SA335 P9 Alloy Steel Seamless Pipes export account today is in various countries like Iran, Iraq, Kuwait, Saudi Arabia, Oman, UAE, Singapore, Malaysia, Indonesia, South korea, Chile, Peru, Venezuela, Australia, Nigeria, Angola, Senegal, Mozambique, Algeria, Libya, Azerbaijan, Netherlands, Brazil, Norway, United Kingdom, Mexico, Canada etc.
Overview of ASME SA335 P9 Alloy Steel Seamless Pipe
ASTM A335 Grade P9 pipe have minimum yield strength of 205 MPA while their minimum Yield Strength is 415 MPA. These pipes have a minimum elongation percentage of about 30/20 L/T. Phosphating, passivation, shot blasting, oil dip and varnishing are some of the surface treatments possible for A335 pipes. These pipes can be tested by a variety of methods including flattening, surface and dimension, mechanical properties, hardness, chemical composition, inspection, bending, etc. Alloy Steel is steel that is alloyed with a variety of elements in total amounts between 1.0% and 50% by weight to improve its mechanical properties. Alloy steels are broken down into two groups: low-alloy steels and high-alloy steels. The difference between the two is somewhat arbitrary: Smith and Hashemi define the difference at 4.0%, while Degarmo, et al., define it at 8.0%. Most commonly, the phrase Alloy Steel refers to low-alloy steels.
The following is a range of improved properties in alloy steels (as compared to carbon steels): strength, hardness, toughness, wear resistance, corrosion resistance, hardenability, and hot hardness. to achieve some of these improved properties the metal may require heat treating.
About ASTM A335 P9 Pipe
A335/SA335 P9 is a seamless ferritic alloy-steel pipe used for high-temperature applications. These pipes are versatile and can be used to transmit water, oil and natural gas.
- Grade: P9
- UNS : S50400
- Pipe: A335/SA335
- Forged/Bored Pipe: A369/SA369
Key to the composition of chrome moly alloy P9 is the addition of chromium and molybdenum. Chromium, or chrome, improves high-temperature strength, increases oxidation resistance and raises the tensile, yield and hardness at room temperatures. Molybdenum increases the strength, elastic limit, resistance to wear, impact qualities and hardenability. It increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is also the most effective additive for increasing high temperature creep strength, or creep resistance. It also enhances the corrosion resistance of steel and inhibits pitting.
Key Features and Composition of ASME SA335 P9 Alloy Steel Seamless Pipe
Material The P9 designation indicates the material is a chrome-moly (chromium-molybdenum) alloy steel. This alloy contains chromium and molybdenum as its primary alloying elements, providing enhanced strength and corrosion resistance at high temperatures.
Chemical Composition
- Chromium (Cr): 8-10%
- Molybdenum (Mo): 0.90-1.10%
- Carbon (C): 0.15% max
- Manganese (Mn): 0.30-0.60%
- Silicon (Si): 0.50% max
- Phosphorus (P): 0.025% max
- Sulfur (S): 0.025% max
Mechanical Properties
- Tensile Strength: Minimum 415 MPa (60,200 psi)
- Yield Strength: Minimum 205 MPa (30,000 psi)
- Elongation: Minimum 20% in 2 inches
Manufacturing Process of ASME SA335 P9 Alloy Steel Seamless Pipe
ASME SA335 P9 pipes are manufactured using a seamless process that ensures the absence of welds, providing better resistance to high pressures and temperatures. The manufacturing process includes the following steps
- Extrusion: A solid billet is heated and pierced to create a hollow shell.
- Elongation: The hollow shell is elongated to the desired length by a mandrel.
- Finishing: The pipe undergoes various finishing processes such as heat treatment, machining, and inspection to ensure it meets the required specifications.
Advantages of ASME SA335 P9 Alloy Steel Seamless Pipe
High-Temperature Strength The addition of chromium and molybdenum enhances the pipe’s ability to maintain strength and integrity at elevated temperatures and Corrosion Resistance Chromium provides good oxidation and corrosion resistance, making these pipes suitable for harsh environments and Durability The seamless construction ensures higher reliability and durability under high-pressure conditions.
Standards and Certifications of ASME SA335 P9 Alloy Steel Seamless Pipe
ASME SA335 P9 pipes are manufactured in accordance with the ASTM A335/A335M standard, ensuring they meet stringent quality and performance requirements. These pipes also adhere to various international standards, making them suitable for global use.
Conclusion
ASME SA335 P9 alloy steel seamless pipes are essential components in industries requiring robust, high-temperature, and high-pressure piping solutions. Their superior material properties, combined with stringent manufacturing standards, make them ideal for critical applications in power generation, petrochemical, and refining sectors.
ASME SA335 P9 Alloy Steel Seamless Pipe Range
| SA335 P9 Alloy Steel Seamless Pipes Specification | ASTM A335 / ASME SA335 |
| SA335 P9 Alloy Steel Seamless Pipes Grades | ASTM A335 P5, ASTM A335 P9, ASTM A335 P11, ASTM A335 P22, ASTM A335 P91, ASME SA335 P5, ASME SA335 P9, ASME SA335 P11, ASME SA335 P22, ASME SA335 P91 |
| SA335 P9 Alloy Steel Seamless Pipes Type | Seamless - Hot Rolled / Cold Drawn |
| SA335 P9 Alloy Steel Seamless Pipes Outer Diameter Size | A335 - 3/8" NB to 30" NB (Nominal Bore Size) |
| SA335 P9 Alloy Steel Seamless Pipes Wall Thickness | Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
| SA335 P9 Alloy Steel Seamless Pipes Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| SA335 P9 Alloy Steel Seamless Pipes Ends | Plain Ends / Beveled Ends / Coupling |
| SA335 P9 Alloy Steel Seamless Pipes Delivery Conditions | As Rolled, Cold Drawn, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
| SA335 P9 Alloy Steel Seamless Pipes Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| SA335 P9 Alloy Steel Seamless Pipes Other Testing | Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc. |
| SA335 P9 Alloy Steel Seamless Pipes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API. |
| SA335 P9 Alloy Steel Seamless Pipes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| SA335 P9 Alloy Steel Seamless Pipes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| SA335 P9 Alloy Steel Seamless Pipes Shipment & Transportation | By Road - Truck / Train, By Sea - Break-bulk Conventional Vessel / FCL (Full Container Load) / LCL (Less Container Load) / 20 Feet Container / 40 Feet Container / 45 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| SA335 P9 Alloy Steel Seamless Pipes Material Test Certificate | Manufacturer Test Certificate As Per EN10204 3.1, 3.2 / Laboratory Test Certificate From NABL Approved Lab. / Under Third Party Inspection Agency Like SGS, TUV, DNV, LLOYDS, ABS ETC |
ASME SA335 P9 Seamless Pipes
Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service
This specification2 covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Selection will depend upon design, service conditions, Mechanical Properties, and high-temperature characteristics.
ASTM A335 Pipe (ASME S/A335, Chorme-Moly) is a seamless ferritic Alloy-Steel Pipe for high temperature service. Pipe ordered to this specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. Sometimes referred to as “P Grade”, Chrome Moly Pipe is popular in P-Grades P5, P9, P11, P22, and P91. The most common use of grades P11, P22, and P91 is in the power industry and petro-chemical plants, Grades P5 and P9 are commonly used in refineries.
A335 is often called chrome moly pipe because of the chemical makeup of Molybdenum (Mo) and Chromium (Cr). Molybdenum increases the strength of steel as well as the elastic limit, resistance to wear, impact qualities, and hardenability. Moly increases the resistance to softening, restrains grain growth and makes chromium steel less susceptible to embrittlement. Moly is the most effective single additive that increases high temperature creep strength. It also enhances the corrosion resistance of steel, and inhibits pitting. Chromium (or chrome) is the essential constituent of stainless steel. Any steel with 12% or more Chrome is considered stainless. Chrome is virtually irreplaceable in resisting oxidation at elevated temperatures. Chrome raises the tensile, yield, and hardness at room temperatures. The composition chrome moly Alloy Steel pipe make it ideal for use in power plants, refineries, petro chemical plants, and oil field services where fluids and gases are transported at extremely high temperatures and pressures.
Savoy Piping Inc. stocks a full range of the following A335 pipe grades:
ASME SA335 P9 Alloy Steel Seamless Pipes chemical compositions
| Grade | P-9 | ||
| Element | UNS Designation | S50400 | |
| Carbon | 0.15 max | 0.05 – 0.15 | |
| Manganese | 0.30 – 0.60 | 0.30 – 0.60 | |
| Phosphorous, max | 0.025 | 0.025 | |
| Sulfur, max | 0.025 | 0.025 | |
| Silicon | 0.50 max | 0.50 – 1.00 | |
| Chromium | 4.00 – 6.00 | 1.00 – 1.50 | |
| Molybdenum | 0.45 -0.65 | 0.44 – 0.65 | |
ASME SA335 P9 Alloy Steel Seamless Pipes tensile test
| Seamless | |
| P-9 | |
| Tensile Strength, min., psi | |
| ksi | 60 |
| MPa | 415 |
| Yield Strength, min., psi | |
| ksi | 30 |
| MPa | 205 |
ASME SA335 P9 Pipes other mechanical test
| 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. | |
| The inside diameter of the bend shall be 1 inch [25 mm]. | |
| Hydrostatic test | Each length of pipe shall be Hydro tested, at option of manufacture, nondestructive electric testing can be used. |
ASME SA335 P9 Seamless Pipes heat treatment
| P5, P9, P11, and P22 | |||
| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering Temperature Range F [C] |
| P9 | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1250 [675] |
ASME SA335 P9 Seamless Pipes 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) | ||
ASME SA335 P9 Alloy Steel Pipes elongation requirement
| 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 | |
ASME SA335 P9 Pipes Permissible Variations in Outside Diameter
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 | |||
ASME SA335 P9 Seamless Pipes Required Markings on Each Length
(On Tags attached to each Bundle in case of Bundled Pipe) Markings will adhere to prescribed specifications in A 999/A999M and be: Rolled, Stamped, or Stenciled (Mfrs. Option)
| In addition, markings will include: | |||||||||||||||||||||||||
| Length of pipe |
|
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| Schedule Number | |||||||||||||||||||||||||
| Heat Number or Manufacturer’s number by which heat can be identified | |||||||||||||||||||||||||
| An Additional Symbol “S” if the pipe conforms to any Supplementary Requirements | |||||||||||||||||||||||||
| S1 – Product Analysis | |||||||||||||||||||||||||
| S2 – Transverse Tension Test | |||||||||||||||||||||||||
| S3 – Flattening Test | |||||||||||||||||||||||||
| S4 – Metal Structure and Etching Tests | |||||||||||||||||||||||||
| S5 – Photomicrographs | |||||||||||||||||||||||||
| S6 – Photomicrographs for Individual Pieces | |||||||||||||||||||||||||
| S7 – Alternative Heat Treatment – Grade P91 | |||||||||||||||||||||||||
| Pipe that has been weld repaired shall be marked “WR”. | |||||||||||||||||||||||||
Reference Documents for SA335 P9 Alloy Steel Seamless Pipes
- ASTM A999/A 999M Specification for General requirements for Alloy and Stainless Steel Pipe.
- ASTM E 213 Practice for Ultrasonic Examination of metal Pipe and Tubing
- ASTM E 309 Practice for Eddy-Current Examination of Steel Tubular Products Using Magnetic Saturation
- ASTM E 381 Method of Macroetch testing Steel Bars, Billets, Blooms, and Forgings
- ASTM E 570 Practice for Flux Leakage Examination of Ferromagnetic Steel Tubular Products
- ASME SB26.10M Welded and Seamless Wrought Steel Pipe
SA335 P9 Alloy Steel Pipes Ordering Information
Orders for material under this specification should include the following, as required, to describe the desired material adequately:
| Quantity | Feet, meters, or number of lengths |
| Name of material | Seamless Alloy Steel Pipe |
| Grade | P5, P9, P11, P22, P91 |
| Manufacturer | Hot-finished or cold-drawn |
| Size using one of the following: | |
| NPS and Schedule Number | |
| Outside Diameter and Nominal Wall Thickness | |
| Outside Diameter and Minimum Wall Thickness | |
| Inside Diameter and Nominal Wall Thickness | |
| Inside Diameter and Minimum Wall Thickness | |
| Length | Specific or Random |
| End Finish | |
Supplying ASTM SA335 P9 Alloy Steel Seamless Pipes to Countries
We Export ASME SA335 P9 Alloy Steel Pipe to Saudi Arabia, Iran, Iraq, United Arab Emirates, Qatar, Bahrain, Oman, Kuwait, Turkey, Egypt, Yemen, Syria, Israel, Jordan, Cyprus, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, Europe, Africa, Asia, North America, South America, Middle East, Far East.etc
Savoy Piping Inc. is a well known worldwide Exporter of ASME SA335 P9 Alloy Steel Seamless Pipes is committed to provide each and every customer with the highest standard of customer service. We deals in SA335 P9 Alloy Steel Seamless Pipes in India and Overseas, offering a wide range of
ASME SA335 P9 Alloy Steel Seamless Pipe