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Description / Abstract:
This specification covers iron-chromium-nickel alloy, stainless
steel castings intended for particularly severe corrosive
applications.
This specification requires postweld heat treatment of all weld
repairs affecting surfaces intended to be wetted by the corrosive
medium. For applications for which postweld heat treatment is not
considered mandatory for retention of acceptable corrosion
resistance, refer to M 163M/M 163.
Note 1—For general corrosion-resistant alloy
castings, reference should be made to M 163M/M 163. For general
heat-resistant alloy castings, reference should be made to ASTM
A297/A297M. For nickel-base alloy castings, refer to ASTM
A494/A494M.
The values stated in either SI units or inch-pound units are to
be regarded separately as standard. Within the text, the inch-pound
units are shown in brackets. The values stated in each system may
not be exact equivalents; therefore, each system shall be used
independently of the other. Combining values from the two systems
may result in nonconformance with the standard. SI units are
applicable for material ordered to M 285M and inch-pound units for
material ordered to M 285.