ASTM A351

Description / Abstract: This specification² covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts (Note I) intended for high-temperature and corrosive service (Note 2).

NOTE I-Carbon steel castings for pressure-containing parts are covered by Specification A 216, and low-alloy steel castings by Specification A 217.

NOTE 2-The committee formulating this specification has included 22 grades of materials extensively used for the present purpose. It is not the intent that this specification should be limited to these grades. Other compositions will be considered for inclusion by the committee as the need arises: Since these grades possess varying degrees of suitability for high-temperature and corrosion-resistant service, it is the responsibility of the purchaser to determine which grade shall be furnished, due consideration being given to the requirements of the applicable construction codes.

Twenty-three grades of austenitic steel castings are included in this specification. Selection will depend on design and service conditions, mechanical properties, and the high temperature and corrosion-resistant characteristics.

The values stated in inch-pound units are to be regarded as the standard.

²For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-3S I in Section II of that code.