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ASTM A335 P9 Ferritic Alloy Steel Pipe For High Temperature 88.9MM X 7.62MM
ASTM A335 P9 is a standard specification for seamless ferritic alloy steel pipe for high temperature applications. The pipe is commonly used in power plants, refineries, and other industrial applications under high temperature and pressure conditions.
ASTM A335 P9 seamless pipe is made of a combination of chromium and molybdenum, which provides excellent corrosion resistance and high temperature strength. It is available in a variety of sizes and specifications to meet different application needs.
Its high temperature resistance: It can withstand temperatures up to 600°C, making it ideal for high temperature applications.
The alloy composition of the pipe provides excellent corrosion resistance, ensuring long-lasting durability in harsh environments.
| C, % | Mn, % | P, % | S, % | Si, % | Cr, % | Mo, % |
| 0.015 max | 0.30-0.60 | 0.025 max | 0.025 max | 0.50 max | 4.00-6.00 | 0.45-0.65 |
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
| 415 min | 205 min | 30 min |
| P5, P9, P11, and P22 | |||
| Grade | Heat Treatment Type | Normalizing Temperature Range F [C] | Subcritical Annealing or Tempering Temperature Range F [C] |
| ASTM A335 P5 Pipe(b,c) | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1250 [675] | |
| Subcritical Anneal (P5c only) | ***** | 1325 - 1375 [715 - 745] | |
| ASTM A335 P9 Pipe | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1250 [675] | |
| ASTM A335 P11 Pipe | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1200 [650] | |
| ASTM A335 P22 Pipe | Full or Isothermal Anneal | ||
| Normalize and Temper | ***** | 1250 [675] | |
| ASTM A335 P91 Pipe | Normalize and Temper | 1900-1975 [1040 - 1080] | 1350-1470 [730 - 800] |
| Quench and Temper | 1900-1975 [1040 - 1080] | 1350-1470 [730 - 800] |
| Seamless | |||||
| Alloy Steel ASTM A335/SA335 P-5 Pipe | Alloy Steel ASTM A335/SA335 P-9 Pipe | Alloy Steel ASTM A335/SA335 P-11 Pipe | Alloy Steel ASTM A335/SA335 P-22 Pipe | Alloy Steel ASTM A335/SA335 P-91 Pipe | |
| 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 |
| ASTM | ASME | JIS G 3458 | UNS | BS | DIN | ISO | ABS | NK | LRS |
| A335 P9 | SA335 P9 | STPA 26 | S50400 | 3604 P1 629-470 | 2604 II TS38 |
| ASTM International | BSi - British Standards institute | Material |
| ASTM A335 Gr. P5 Pipe | 3604/625 | 5% Cr 1/2% Mo |
| ASTM A335 Gr. P9 Pipe | 3604/629 | 9% Cr 1% Mo |
| ASTM A335 Gr. P11 Pipe | 3604/621 | 1 1/4% Cr 1/2% Mo |
| ASTM A335 Gr. P12 Pipe | 3604/620 | 1% Cr 1/2% Mo |
| ASTM A335 Gr. P22 Pipe | 3604/622 | 2 1/4% Cr 1% No |
