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ASTM A 990 Document Information:
Title
Standard Specification for Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially Controlled for Pressure Retaining Parts for Corrosive Service
ASTM International
Publication Date:
Mar 1, 2008
Scope:
This specification covers iron-nickel-chromium and nickel alloy
castings specially processed with restricted melt practices,
weldability testing, and nondestructive examination (NDE)
requirements.
A number of grades of iron-nickel-chromium and nickel alloy
castings are included in this specification. Since these grades
possess varying degrees of suitability for service in corrosive
environments, it is the responsibility of the purchaser to
determine which grade shall be furnished. Selection will depend on
design and service conditions, mechanical properties, and
corrosion-resistant characteristics.
This specification is expressed in both inch-pound units and in
SI units; however, unless the purchase order or contract specifies
the applicable M specification designation (SI units), the
inch-pound units shall apply. The values stated in either
inch-pound units or SI units are to be regarded separately as
standard. Within the text, the SI 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.
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.
Keywords:
- casting
- pressure retaining
- iron-nickel-chromium
- nickel alloy
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