Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
Delivering High Quality Stainless Steel and Alloy Piping Products — Pipes, Tubes, Fittings, Flanges and more for Global Industries.
sales@savoypipinginc.com
High-temperature chrome-moly service usually lands on ASTM A335 P-grades (and A213 T-grades for tubes). Confirm P-number, size and heat treatment with the enquiry.
Related: chrome moly hub · P11 · P22 · P91 · materials hub.
Send P/T grade, NPS / OD, schedule or wall, length, quantity, PWHT/NDE notes if any, and destination. Email sales@savoypipinginc.com.
Chrome moly grades
| Alloy Steel Seamless Pipe & Tubes Specification | ASTM A335 / ASME SA335 /ASTM A213 / ASME SA213 |
| Alloy Steel Seamless Pipe & Tubes Grades | ASTM A335 P5, ASTM A335 P9, ASTM A335 P11, ASTM A335 P22, ASTM A335 P91, ASTM A335 P92, ASME SA335 P5, ASME SA335 P9, ASME SA335 P11, ASME SA335 P22, ASME SA335 P91, ASME SA335 P92, ASTM A213 T5, ASTM A213 T9, ASTM A213 T11, ASTM A213 T22, ASTM A213 T91, ASTM A213 T92, ASME SA213 T5, ASME SA213 T9, ASME SA213 T11, ASME SA213 T22, ASME SA213 T91, ASME SA213 T92 |
| Alloy Steel Seamless Pipe & Tubes Type | Seamless - Hot Rolled / Cold Drawn |
| Alloy Steel Seamless Pipe & Tubes Outer Diameter Size | A335 - 3/8" NB to 30" NB (Nominal Bore Size), A213 -3/8"OD to 5"O |
| Alloy Steel Seamless Pipe & Tubes Wall Thickness | Schedule 20 to Schedule XXS (Heavier On Request) Up to 250 mm Thickness |
| Alloy Steel Seamless Pipe & Tubes Length | 5 to 7 Meters, 09 to 13 Meters, Single Random Length, Double Random Length And Customize Size. |
| Alloy Steel Seamless Pipe & Tubes Pipe Ends | Plain Ends / Beveled Ends / Coupling |
| Alloy Steel Seamless Pipe & Tubes Delivery Conditions | As Rolled, Cold Drawn, Normalizing Rolled, Thermomechanical Rolled / Formed, Normalizing Formed, Normalized and Tempered / Quenched and Tempered - BR / N / Q /T |
| Alloy Steel Seamless Pipe & Tubes Coating | Epoxy Coating / Colour Paint Coating / 3LPE Coating. |
| Alloy Steel Seamless Pipe & Tubes Other Testing | Tensile Test, Transverse Tension Tests, Flattening Test, Metal Structure and Etching Tests, Photomicrographs, Hardness Tests, etc. |
| Alloy Steel Seamless Pipe & Tubes Dimension | All Pipes Is Manufactured and Inspected / Tested to the Relevant standards including ASTM, ASME, API. |
| Alloy Steel Seamless Pipe & Tubes Value Added Services | Draw / Expansion / Machining / Sand Blasting / Shot Blasting / Galavanizing / Heat Treatment |
| Alloy Steel Seamless Pipe & Tubes Packaging | Loose / Bundle / Wooden Pallet / Wooden box-a / Plastic Cloth Wraps / Plastic End Caps / Beveled Protector |
| Alloy Steel Seamless Pipe & Tubes 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 / 4 Feet Container / High Cube Container / Open Top Container, By Air - Freighter Civil Passenger and Cargo Planes |
| Alloy Steel Seamless Pipe & Tubes 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 |
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 and Valves 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:
Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
This specification covers seamless ferritic and austenitic steel boiler, superheater ,Air Pre Heater and heat-exchanger tubes. Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H. These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. The Tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified. Grade TP347HFG shall be cold finished. Heat treatment shall be done separately and in addition to heating for hot forming. The ferritic alloy and ferritic stainless steels shall be reheated. On the other hand, austenitic Stainless Steel Tubes shall be furnished in the heat-treated condition. Alternatively, immediately after hot forming, while the temperature of the Tubes is not less than the minimum solution temperature, Tubes may be individually quenched in water or rapidly cooled by other means. Tension test, hardness test, flattening test, and flaring test shall be done to each tube. Also, each tube shall be subjected to the nondestructive electric test or hydrostatic test.
| Grade | P-5 | P-9 | P-11 | P-22 | P-91 | P-91 shall also include the following: | ||
| Element | UNS Designation | K4154 | S50400 | K11597 | K2159 | 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 | 1.9 – 2.60 | 8.00 – 9.50 | Ti at 0.01 max | ||
| Molybdenum | 0.4 -0.65 | 0.9 – 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 | |||
| 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. | |
| Grade | Chemical Composition% | ||||||||
| C | Si | Mn | P, S Max | Cr | Mo | Ni Max | V | Al Max | |
| T11 | 0.05~0.15 | 0.50~1.00 | 0.30~0.60 | 0.025 | 1.00~1.50 | 0.44~0.65 | – | – | – |
| T12 | 0.05~0.15 | Max 0.5 | 0.30~0.61 | 0.025 | 0.80~1.25 | 0.44~0.65 | – | – | – |
| T22 | 0.05~0.15 | Max 0.5 | 0.30~0.60 | 0.025 | 1.9~2.60 | 0.87~1.13 | – | – | – |
| T91 | 0.07~0.14 | 0.20~0.50 | 0.30~0.60 | 0.02 | 8.0~9.5 | 0.85~1.05 | 0.4 | 0.18~0.25 | 0.015 |
| Grade | Chemical Composition% | Mechanical Properties | |||||||
| W | B | Nb | N | T. S | Y. P | Elongation | Hardness | ||
| T11 | – | – | – | – | ≥ 415MPa | ≥ 205MPa | ≥ 30% | 163HBW(85HRB) | |
| T12 | – | – | – | – | ≥ 415MPa | ≥ 220MPa | ≥ 30% | 163HBW(85HRB) | |
| T22 | – | – | – | – | ≥ 415MPa | ≥ 205MPa | ≥ 30% | 163HBW(85HRB) | |
| T91 | – | – | 0.06~0.10 | 0.03~0.07 | ≥ 585MPa | ≥ 415MPa | ≥ 20% | 250HBW(25HRB) | |
ASTM A335 / ASME SA335 covers seamless ferritic alloy-steel pipe for high-temperature piping. ASTM A213 / ASME SA213 covers seamless boiler, superheater and heat-exchanger tubes. Chemistry families often match (P11/T11, P22/T22, P91/T91), but product form and ordering dimensions differ.
Common grades include A335/SA335 P5, P9, P11, P22, P91 and P92, plus A213/SA213 T5, T9, T11, T22, T91 and T92, with EN 10204 documentation and optional IBR Form III-C.
For Indian boiler installations under IBR, purchasers often require ASME SA335 / SA213 wording with Form III-C in addition to mill test certificates. Confirm the documentation package on the PO.
Use A335 for seamless chrome moly pipe. Use A691 when the design needs electric-fusion-welded plate pipe — typically larger OD packages where seamless supply is impractical.
We export Alloy Steel Pipes and Tubes 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, Myanmar, Taiwan, Cambodia, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay, United States of America, Canada, Mexico, Panama, Costa Rica, Puerto Rico, Trinidad And Tobago, Jamaica, Bahamas, Denmark, Russia, Norway, Germany, France, Italy, United Kingdom, Spain, Ukraine, Netherlands, 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 Alloy Steel Seamless Pipes and Tubes, Savoy Piping Inc. is committed to provide each and every customer with the highest standard of customer service. We deal in Alloy Steel Seamless Pipes and Tube in India and Overseas, offering a wide range of Alloy Steel Seamless Pipes and Tubes