| Model: | ASTM A335 P11，ASTM A335 P22 | Standard: | ASTM A335 |
|---|---|---|---|
| Length: | Single Random， Double Random & Cut Length. | Surface: | Black/Vanish |
| OD: | 1/2′ TO 24 ‘ | END: | PLAIN，BEVELED |
| High Light: | P92 Seamless Alloy Steel Pipe， High Temperuture Seamless Alloy Steel Pipe， Industry Alloy Steel Seamless Tubes | ||
ASTM A335 / ASME SA335 P9 Seamless Alloy Steel Pipe For High Temperuture
TONG CHUANG GROUP deal with Stainless Steel and tube already more than 33 years， every year sell more than 80000 tons of Stainless Steel and tube. Our client already cover more than 65 countries. Our Stainless Steel and tube was width used in Mining， Energy， Petrochemical， Chemical Industry， Food plant， Paper plant， Gas and Fluid Industry etc.
Several Advantages of A335 P9 Seamless Alloy Pipe
1 High-temperature strength: The9 grade alloy steel used the pipe is specifically designed to high temperatures. It has excellent thermal stability， allowing it to its mechanical properties even at elevated. This makes it suitable for applications where high-temperature strength is required.
2. Corrosion resistance: The chromium content in P9 grade steel provides excellent resistance to oxidation and corrosion. It can withstand aggressive environments and resist the formation of rust and scale. This makes P9 suitable for applications in industries such as petroleum refining and chemical processing， where exposure to corrosive substances is common.
3. Uniformity and reliability: The seamless manufacturing process ensures uniformity in the pipe's structure， eliminating the risk of weak points or weld defects. This enhances the pipe's reliability and reduces the chances of leakage or failure in high-pressure and high-temperature applications.
4. Versatility: P9 seamless alloy steel pipe can be used in a wide range of industries and applications， including power generation， petrochemicals， refineries， and more. Its ability to withstand high temperatures and pressures makes it suitable for various critical applications.
5. Easy installation and maintenance: The seamless nature of P9 pipe allows for easy installation and maintenance. It can be easily cut， threaded， and welded， making it convenient to work with during installation or repairs.
6. Cost-effective: P9 offers a cost-effective solution for high-temperature applications. Its durability， reliability， and extended service life can help minimize maintenance and replacement costs over time.
Chemical Requirements of Chrome Moly Alloy A/SA335
| 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 | |
Chemical Composition of Other Grades of Specification Chrome Moly Alloy A/SA335
| Grade | UNS | C≤ | Mn | P≤ | S≤ | Si≤ | Cr | Mo |
| P1 | K11522 | 0.10~0.20 | 0.30~0.80 | 0.025 | 0.025 | 0.10~0.50 | – | 0.44~0.65 |
| P2 | K11547 | 0.10~0.20 | 0.30~0.61 | 0.025 | 0.025 | 0.10~0.30 | 0.50~0.81 | 0.44~0.65 |
| P5 | K41545 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 4.00~6.00 | 0.44~0.65 |
| P5b | K51545 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 1.00~2.00 | 4.00~6.00 | 0.44~0.65 |
| P5c | K41245 | 0.12 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 4.00~6.00 | 0.44~0.65 |
| P9 | S50400 | 0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50~1.00 | 8.00~10.00 | 0.44~0.65 |
| P11 | K11597 | 0.05~0.15 | 0.30~0.61 | 0.025 | 0.025 | 0.50~1.00 | 1.00~1.50 | 0.44~0.65 |
| P12 | K11562 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 0.80~1.25 | 0.44~0.65 |
| P15 | K11578 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 1.15~1.65 | – | 0.44~0.65 |
| P21 | K31545 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 2.65~3.35 | 0.80~1.60 |
| P22 | K21590 | 0.05~0.15 | 0.30~0.60 | 0.025 | 0.025 | 0.50 | 1.90~2.60 | 0.87~1.13 |
| P91 | K91560 | 0.08~0.12 | 0.30~0.60 | 0.020 | 0.010 | 0.20~0.50 | 8.00~9.50 | 0.85~1.05 |
| P92 | K92460 | 0.07~0.13 | 0.30~0.60 | 0.020 | 0.010 | 0.50 | 8.50~9.50 | 0.30~0.60 |
Tensile Requirements of Chrome Moly Alloy A/SA335
| 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 | |
MECHANICAL PROPERTIES
| Hardness | ||||||
| A335 Low-Alloy Pipe | UNS Number | Yield Strength ksi | Tensile Strength ksi | Elongation % | Rockwell | Brinell |
| P1 | K11522 | 30 | 55 | 30 | – | – |
| P2 | K11547 | 30 | 55 | 30 | – | – |
| P5 | K41545 | 40 | 70 | 30 | – | 207 max |
| P9 | S50400 | 30 | 60 | 30 | – | – |
| P11 | K11597 | 30 | 60 | 20 | – | – |
| P12 | K11562 | 32 | 60 | 30 | – | 174 max |
| P22 | K21590 | 30 | 60 | 30 | – | – |
| P91 | K91560 | 60 | 85 | 20 | – | – |
Application
- Power generation
- Petrochemical industry
- Chemical processing
- Oil and gas industry
- High-temperature service
