ASTM A335 P9 Seamless Pipe and tube
ASTM A335 Gr P9 Composition
| 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 |
ASTM A335 P9 Properties
| Tensile Strength, MPa | Yield Strength, MPa | Elongation, % |
| 415 min | 205 min | 30 min |
Heat Treatment Requirements
| 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] |
