The range of ASTM A335 P91 pipe sizes that may be examined by each method shall be subjected to the limitations in the scope of the respective practices.
The different mechanical test requirements for pipes, namely, transverse or longitudinal tension test, flattening test, and hardness or bend test are presented. Both ends of each crate will indicate the order no., heat no.,
dimensions, weight and bundles or as requested.
Mechanical Properties of ASTM A335 P91 steel pipe
| Properties | Data |
| Tensile strength, min, (MPa) | 585
|
| Yield strength, min, (MPa) | 415 |
| Elongation, min, (%), L/T | 20/… |
A335 P91 steel pipe Mechanical Tests Specified
Transverse or Longitudinal Tension Test and Flattening Test, Hardness Test, or Bend Test
For material heat treated in a batch-type furnace, tests shall be made on 5% of the pipe from each treated lot.
For small lots, at least one pipe shall be tested.
For material heat treated by the continuous process, tests shall be made on a sufficient number of pipe to
constitute 5% of the lot, but in no case less than 2 pipe.
