ASTM A335 / ASME SA335 P9 Seamless Alloy Steel Pipe For High Temperuture
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Several Advantages of A335 P9 Seamless Alloy Pipe
1 High-temperature strength: The P9 grade alloy steel used the steel 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 seamless pipe 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 steel 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 steel 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 seamless steel pipe 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 Seamless Pipe 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 Seamless Pipe 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 Seamless Pipe 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 |
– |
– |
| Yuhogn Group Chrome-Moly Alloy Steel Products |
| Seamless Pipe |
Seamless Tube |
Froged Flange /Fitting |
Butt Weld Fitting |
| Standard |
Grade |
Standard |
Grade |
Standard |
Grade |
Standard |
Grade |
| ASTM A335 |
ASME SA335 |
P1 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T1 |
ASTM A182 |
ASME SA182 |
F1 |
ASTM A234 |
ASME SA234 |
WP1 |
| ASTM A335 |
ASME SA335 |
P11 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T11 |
ASTM A182 |
ASME SA182 |
F11 |
ASTM A234 |
ASME SA234 |
WP11 |
| ASTM A335 |
ASME SA335 |
P12 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T12 |
ASTM A182 |
ASME SA182 |
F12 |
ASTM A234 |
ASME SA234 |
WP12 |
| ASTM A335 |
ASME SA335 |
P22 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T22 |
ASTM A182 |
ASME SA182 |
F22 |
ASTM A234 |
ASME SA234 |
WP22 |
| ASTM A335 |
ASME SA335 |
P23 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T23 |
ASTM A182 |
ASME SA182 |
F23 |
ASTM A234 |
ASME SA234 |
WP23 |
| ASTM A335 |
ASME SA335 |
P5 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T5 |
ASTM A182 |
ASME SA182 |
F5 |
ASTM A234 |
ASME SA234 |
WP5 |
| ASTM A335 |
ASME SA335 |
P5b |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T5b |
ASTM A182 |
ASME SA182 |
F5a |
ASTM A234 |
ASME SA234 |
WP9 |
| ASTM A335 |
ASME SA335 |
P5c |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T5c |
ASTM A182 |
ASME SA182 |
F9 |
ASTM A234 |
ASME SA234 |
WP91 |
| ASTM A335 |
ASME SA335 |
P9 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T9 |
ASTM A182 |
ASME SA182 |
F91 |
ASTM A234 |
ASME SA234 |
WP92 |
| ASTM A335 |
ASME SA335 |
P91 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T91 |
ASTM A182 |
ASME SA182 |
F92 |
|
|
|
| ASTM A335 |
ASME SA335 |
P92 |
ASTM A213 |
ASME SA213 |
ASTM A199 |
ASME SA199 |
T92 |
|
|
|
|
|
|
Application
- Power generation
- Petrochemical industry
- Chemical processing
- Oil and gas industry
- High-temperature service
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