ASTM A335/A335M-23 pdf download – Standard Specification For Seamless Ferritic Alloy-Steel Pipe For High-Temperature Service.
This specification pertains to seamless ferritic alloy-steel piping with nominal and minimum wall thicknesses, designed for service at elevated temperatures. Piping ordered under this specification is suitable for bending, flanging, and other forming processes, as well as for fusion welding. The choice of grade is influenced by factors such as design, operating conditions, mechanical properties, and high-temperature performance.
Section 1.2 includes multiple grades of ferritic steels (refer to Note 1). The composition details for these grades are detailed in Table 1.
Note 1: Ferritic steels as defined in this specification encompass low- to intermediate-alloy steels that contain up to 10% chromium by weight.
Additionally, this specification offers optional supplementary requirements (S1 to S9) that are not mandatory but can be specified by the customer. These supplementary requirements S1 through S6 involve additional testing, which can be requested by the customer and should be clearly stated in the order, along with the specific number of tests required.
