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ASTM A 988/A 988M Document Information:
Title
Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
ASTM International
Publication Date:
Sep 1, 2007
Scope:
This specification covers hot isostatically-pressed, powder
metallurgy, stainless steel piping components for use in pressure
systems. Included are flanges, fittings, valves, and similar parts
made to specified dimensions or to dimensional standards, such as
in ASME specification B16.5.
Several grades of martensitic, austenitic, age hardening, and
austenitic-ferritic stainless steels are included in this
specification.
Supplementary requirements are provided for use when additional
testing or inspection is desired. These shall apply only when
specified individually by the purchaser in the order.
This specification is expressed in both inch-pound units and in
SI units. Unless the order specifies the applicable "M"
specification designation (SI units), however, the material shall
be furnished to inch-pound units.
The values stated in either inch-pound units or SI units are to
be regarded separately as the standard. Within the text, the SI
units are shown in parentheses. The values stated in each system
are not exact equivalents; therefore, each system must be used
independently of the other. Combining values from the two systems
may result in nonconformance with the specification.
The following safety hazards caveat pertains only to test
methods portions 8.1, 8.2, 9.5-9.7, and Section 10 of this
specification: This standard does not purport to address all of
the safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish
appropriate safety and health practices and determine the
applicability of regulatory limitations prior to use.
*A Summary of Changes section appears at the end of this
standard.
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