Seamless Ferritic Alloy Steel Pipe ASTM A335
Steel grade: P5, P9, P11, P12, P22, P91, P92
Size: OD (90-1200mm) x WT (25-150mm)
Application: Used for boiler pipe, power plants and nuclear plants.
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| Chemical Composition (%) | ||||||||||||||
| Grade | C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | Al | W | Nb | N |
| P11 | 0.05~0.15 | 0.5~1.0 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 1.0~1.5 | 0.5~1.0 |  |  |  |  |  |  |  |
| P12 | 0.05~0.15 | ≤ 0.5 | 0.3~0.61 | ≤ 0.03 | ≤ 0.03 | 0.8~1.25 | 0.44~0.65 |  |  |  |  |  |  |  |
| P22 | 0.05~0.15 | ≤ 0.5 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 1.9~2.6 | 0.87~1.13 |  |  |  |  |  |  |  |
| P5 | ≤ 0.15 | ≤ 0.5 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 4.0~6.0 | 0.45~0.65 |  |  |  |  |  |  |  |
| P91 | 0.08~0.12 | 0.2~0.5 | 0.3~0.6 | ≤ 0.02 | ≤ 0.01 | 8.0~9.5 | 0.85~1.05 |  | ≤ 0.4 | 0.18~0.25 | ≤ 0.015 |  | 0.06~0.10 | 0.03~0.07 |
| P92 | 0.07~0.13 | ≤ 0.5 | 0.3~0.6 | ≤ 0.02 | ≤ 0.01 | 8.5~9.5 | 0.3~0.6 | B0.001 0.006 | ≤ 0.4 | 0.15~0.25 | ≤ 0.015 | 1.5~2.0 | 0.04~0.09 | 0.03~0.07 |
| Mechanical Properties | |||||
| Grade | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | Impact energy(J) | Hardness |
| P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P12 | ≥ 415 | ≥ 220 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 187HB |
| P91 | 585~760 | ≥ 415 | ≥ 20 | ≥ 35 | ≤ 250HB |
| P92 | ≥ 620 | ≥ 440 | ≥ 20 | ≥ 35 | 250HB |
 Standard: ASTM A335/ASME SA335
Steel grade: P5, P9, P11, P12, P22, P91, P92
Size: OD (90-1200mm) x WT (25-150mm)
Application: Used for boiler pipe, power plants and nuclear plants.
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| Chemical Composition (%) | ||||||||||||||
| Grade | C | Si | Mn | P | S | Cr | Mo | Cu | Ni | V | Al | W | Nb | N |
| P11 | 0.05~0.15 | 0.5~1.0 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 1.0~1.5 | 0.5~1.0 |  |  |  |  |  |  |  |
| P12 | 0.05~0.15 | ≤ 0.5 | 0.3~0.61 | ≤ 0.03 | ≤ 0.03 | 0.8~1.25 | 0.44~0.65 |  |  |  |  |  |  |  |
| P22 | 0.05~0.15 | ≤ 0.5 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 1.9~2.6 | 0.87~1.13 |  |  |  |  |  |  |  |
| P5 | ≤ 0.15 | ≤ 0.5 | 0.3~0.6 | ≤ 0.03 | ≤ 0.03 | 4.0~6.0 | 0.45~0.65 |  |  |  |  |  |  |  |
| P91 | 0.08~0.12 | 0.2~0.5 | 0.3~0.6 | ≤ 0.02 | ≤ 0.01 | 8.0~9.5 | 0.85~1.05 |  | ≤ 0.4 | 0.18~0.25 | ≤ 0.015 |  | 0.06~0.10 | 0.03~0.07 |
| P92 | 0.07~0.13 | ≤ 0.5 | 0.3~0.6 | ≤ 0.02 | ≤ 0.01 | 8.5~9.5 | 0.3~0.6 | B0.001 0.006 | ≤ 0.4 | 0.15~0.25 | ≤ 0.015 | 1.5~2.0 | 0.04~0.09 | 0.03~0.07 |
| Mechanical Properties | |||||
| Grade | Tensile strength(MPa) | Yield strength(MPa) | Elongation(%) | Impact energy(J) | Hardness |
| P11 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P12 | ≥ 415 | ≥ 220 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P22 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 163HB |
| P5 | ≥ 415 | ≥ 205 | ≥ 22 | ≥ 35 | ≤ 187HB |
| P91 | 585~760 | ≥ 415 | ≥ 20 | ≥ 35 | ≤ 250HB |
| P92 | ≥ 620 | ≥ 440 | ≥ 20 | ≥ 35 | 250HB |
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