For definitions of other terms used in this specification, find in
specification A961/A961M.
Ordering information
See specification A961/A961M.
General requirements
If conflict between the requirements of this specification and
Specification A961/A961M. Comply with this specification.
Chemical Composition
A The sum of copper, nickel, chromium, molybdenum and vanadium shall
not exceed 1.00%.
B The sum of chromium and molybdenum shall not exceed 0.32%.
Heat treatment
Heat treatment is not required except for flanges above Class 300,
flanges of special design where the design pressure or design
temperature are not known and for items over 4" NPS and above Class
300. When heat treatment is required, annealing, normalizing,
Normalize and temper, normalize and quench and tempering shall be
the applied methods.
Welding
These components can be welded. Welding procedures must comply with
ASME Boiler and Pressure Vessel Code Section IX.
Forging
ASTM A105 carbon steel can be forged at temperatures in the range
of 2200 to 1700 F followed by quenching and tempering or
normalizing.
Annealing
Forged parts can be cooled to below 1000 degrees Fahrenheit and
then heated to between 1550 degrees Fahrenheit and 1,700 degrees
Fahrenheit. Then carry out slow furnace cooling.
Hydro-static Test
Hydro-static Test shall be conducted by the forging manufacture
only when Supplemental S57 of ASTM A961 is specified.