SAE AMS 5590:2018 pdf free

SAE AMS 5590:2018 pdf free.Nickel Alloy, Corrosion and Heat Resistant, Seamless Tubing
Alloy shall be produced by multiple melting using consumable electrode practice in the remelt cycle or shall be induction melted under vacuum. If consumable electrode remelting is not performed in vacuum, electrodes which have been produced by vacuum induction melting shall be used for remelting.
Cold drawn, solution heat treated, and unless solution heat treatment is performed in an atmosphere yielding a bright finish,pickled as required. No specific solution heat treating instructions are specified but it is recommended that the tubing be solution heat treated by heating in a suitable protective atmosphere to 1950 °F±25 °F (1066 °C±14°C), holding at heat for not more than 30 minutes, and cooling at a rate equivalent to an air cool or faster.
Tubing shall be produced by a seamless process. Surface finishes may be produced by pickling, bright annealing, or any method which will provide the required surface condition and which will not affect limits of wall thickness or corrosion resistance, with the exception that a centerless ground finish is not acceptable. A light polish to improve external surface appearance may be employed. Bore conditioning is permitted after final anneal providing the tubing is not sized by metal removal methods and the tubing is passivated after any such conditioning (see 8.3.1).
Tubing, as received by purchaser, shall be uniform in quality and condition and shall have a finish conforming to the best practice for high quality aircraft tubing. It shall be smooth and free from heavy scale or oxide, burrs, seams, tears, grooves, laminations, slivers, pits, and other imperfections detrimental to usage of the tubing. Surface imperfections, such as handling marks, straightening marks, light mandrel and die marks, shallow pits, and scale pattern, will not be considered injurious if the imperfections are removable within the tolerances specified for wall thickness, but removal of such imperfections is not required.
3.6.1 Tubing shall be subjected to either ultrasonic inspection or to electromagnetic (eddy-current) testing in accordance with ASTM A1016 except that suspect indications shall not be accepted based on visual observation, i.e., indications must be either rejected or reconditioned and retested to pass the test.SAE AMS 5590 pdf free download.