ASTM A988/A988M-05

Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service

SCOPE
1.1 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.
1.2 Several grades of martensitic, austenitic, age hardening, and austenitic-ferritic stainless steels are included in this specification.
1.3 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.
1.4 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.
1.5 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 , , , and Section 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.

General Information

• Status: Historical
• Publication Date: 28-Feb-2005
• ICS: 49.025.10 - Steels
• Technical Committee: A01 - Steel, Stainless Steel and Related Alloys
• Drafting Committee: A01.22 - Steel Forgings and Wrought Fittings for Piping Applications and Bolting Materials for Piping and Special Purpose Applications

Relations

• Replaces: ASTM A988/A988M-98(2002)e1 - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
• Effective Date: 01-Mar-2005
• Replaced By: ASTM A988/A988M-07 - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
• Effective Date: 01-Sep-2007

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: A 988/A 988M – 05
Standard Specification for
Hot Isostatically-Pressed Stainless Steel Flanges, Fittings,
1
Valves, and Parts for High Temperature Service
This standard is issued under the fixed designationA 988/A 988M; the number immediately following the designation indicates the year
of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval.
A superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
1. Scope* A 262 Practices for Detecting Susceptibility to Intergranu-
lar Attack in Austenitic Stainless Steels
1.1 This specification covers hot isostatically-pressed, pow-
A 275/A 275M Test Method for Magnetic Particle Exami-
der metallurgy, stainless steel piping components for use in
nation of Steel Forgings
pressure systems. Included are flanges, fittings, valves, and
A 370 Test Methods and Definitions for MechanicalTesting
similar parts made to specified dimensions or to dimensional
of Steel Products
standards, such as in ASME specification B16.5.
A 745/A 745M Practice for Ultrasonic Examination ofAus-
1.2 Several grades of martensitic, austenitic, age hardening,
tenitic Steel Forgings
and austenitic-ferritic stainless steels are included in this
A 751 Test Methods, Practices, and Terminology for
specification.
Chemical Analysis of Steel Products
1.3 Supplementary requirements are provided for use when
A 923 TestMethodsforDetectingDetrimentalIntermetallic
additional testing or inspection is desired. These shall apply
Phase in Wrought Duplex Austenitic/Ferritic Stainless
only when specified individually by the purchaser in the order.
Steels
1.4 This specification is expressed in both inch-pound units
B311 Test Method for Density Determination for Powder
and in SI units. Unless the order specifies the applicable “M”
Metallurgy (P/M) Materials Containing Less Than Two
specification designation (SI units), however, the material shall
Percent Porosity
be furnished to inch-pound units.
E112 Test Methods for Determining the Average Grain
1.5 The values stated in either inch-pound units or SI units
Size
are to be regarded separately as the standard. Within the text,
E 165 Test Method for Liquid Penetrant Examination
theSIunitsareshowninparentheses.Thevaluesstatedineach
E 340 Test Method for Macroetching Metals and Alloys
system are not exact equivalents; therefore, each system must
E 606 Practice for Strain-Controlled Fatigue Testing
be used independently of the other. Combining values from the
G48 Test Method for Pitting and Crevice Corrosion Resis-
two systems may result in nonconformance with the specifi-
tance of Stainless Steels and Related Alloys by Use of
cation.
Ferric Chloride Solution
1.6 The following safety hazards caveat pertains only to test
2.2 MSS Standard:
methods portions 8.1, 8.2, 9.5-9.7, and Section 10 of this
SP 25 Standard Marking System for Valves, Fittings,
specification: This standard does not purport to address all of
3
Flanges, and Unions
the safety concerns, if any, associated with its use. It is the
2.3 ASME Specifications and Boiler and Pressure Vessel
responsibility of the user of this standard to establish appro-
Codes:
priate safety and health practices and determine the applica-
B16.5 Dimensional Standards for Steel Pipe Flanges and
bility of regulatory limitations prior to use.
4
Flanged Fittings
2. Referenced Documents
2.4 ASME Specification IX Welding Qualifications:
2
SFA-5.4 Specification for Corrosion-Resisting Chromium
2.1 ASTM Standards:
4
andChromium-NickelSteelCoveredWeldingElectrodes
SFA-5.9 Specification for Corrosion-Resisting Chromium
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
and Chromium-Nickel Steel Welding Rods and Bare
4
Stainless Steel, and RelatedAlloys and is the direct responsibility of Subcommittee
Electrodes
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved March 1, 2005. Published April 2005. Originally
e1
approved in 1998. Last previous edition approved in 2002 as A 988 – 98 (2002) .
2 3
For referenced ASTM standards, visit the ASTM website, www.astm.org, or AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602.
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Standards volume information, refer to the standard’s Document Summary page on Available from American Society of Mechanical Engineers (ASME), ASME
the ASTM website. International Headquarters, Three Park Ave., New York, NY 10016-5990.
*A Summary of Changes section appears at the end of this standard.
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