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ASTM A988-98

(Specification)

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

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 metal, 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.

General Information

Status
Historical
Publication Date
09-Mar-1998
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
Current Stage
Ref Project

Relations

Replaced By
ASTM A988-98(2002) - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
Effective Date
10-Mar-1998

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ASTM A988-98 - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature ServiceASTM A988-98 - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
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ASTM A988-98 - Standard Specification for Hot Isostatically-Pressed Stainless Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
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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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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 – 98
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
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 designation A 988; 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 370 Test Methods and Definitions for Mechanical Testing
4
of Steel Products
1.1 This specification covers hot isostatically-pressed, pow-
A 751 Test Methods, Practices, and Terminology for
der metal, stainless steel piping components for use in pressure
4
Chemical Analysis of Steel Products
systems. Included are flanges, fittings, valves, and similar parts
A 923 Test Methods for Detecting Detrimental Intermetallic
made to specified dimensions or to dimensional standards, such
Phase in Wrought Duplex Austenitic/Ferritic Stainless
as in ASME specification B16.5.
2
Steels
1.2 Several grades of martensitic, austenitic, and austenitic-
E 112 Test Methods for Determining the Average Grain
ferritic stainless steels are included in this specification.
5
Size
1.3 Supplementary requirements are provided for use when
E 165 Practice for Liquid Penetrant Inspection Examina-
additional testing or inspection is desired. These shall apply
6
tion
only when specified individually by the purchaser in the order.
5
E 340 Test Method for Macroetching Metals and Alloys
1.4 This specification is expressed in both inch-pound units
5
E 606 Practice for Strain-Controlled Fatigue Testing
and in SI units. Unless the order specifies the applicable “M”
G 48 Test Method for Pitting and Crevice Corrosion Resis-
specification designation (SI units), however, the material shall
tance of Stainless Steels and Related Alloys by Use of
be furnished to inch-pound units.
7
Ferric Chloride Solution
1.5 The values stated in either inch-pound units or SI units
2.2 MSS Standard:
are to be regarded separately as the standard. Within the text,
SP 25 Standard Marking System for Valves, Fittings,
the SI units are shown in parentheses. The values stated in each
8
Flanges, and Unions
system are not exact equivalents; therefore, each system must
2.3 ASME Specifications and Boiler and Pressure Vessel
be used independently of the other. Combining values from the
Codes:
two systems may result in nonconformance with the specifi-
B16.5 Dimensional Standards for Steel Pipe Flanges and
cation.
9
Flanged Fittings
1.6 The following safety hazards caveat pertains only to test
2.4 ASME Specification IX Welding Qualifications:
methods portions 8.1, 8.2, 9.5-9.7, and Section 10 of this
SFA-5.4 Specification for Corrosion-Resisting Chromium
specification: This standard does not purport to address all of
9
and Chromium-Nickel Steel Covered Welding Electrodes
the safety concerns, if any, associated with its use. It is the
SFA-5.9 Specification for Corrosion-Resisting Chromium
responsibility of the user of this standard to establish appro-
and Chromium-Nickel Steel Welding Rods and Bare
priate safety and health practices and to determine the
9
Electrodes
applicability of regulatory limitations prior to use.
SFA-5.11 Specification for Nickel and Nickel-Alloy Cov-
9
2. Referenced Documents ered Welding Electrodes
2.1 ASTM Standards:
3. Terminology
A 262 Practices for Detecting Susceptibility to Intergranu-
2 3.1 Definitions of Terms Specific to This Standard:
lar Attack in Austenitic Stainless Steels
3.1.1 can, n—the container used to encapsulate the powder
A 275/A 275M Test Method for Magnetic Particle Exami-
3 during the pressure consolidation process; it is partially or fully
nation of Steel Forgings
removed from the final part.
4
Annual Book of ASTM Standards, Vol 01.01.
1
5
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Annual Book of ASTM Standards, Vol 03.01.
6
Stainless Steel, and Related Alloys and is the direct responsibility of Subcommittee
Annual Book of ASTM Standards, Vol 03.03.
7
A01.22 on Steel Forgings and Wrought Fittings for Piping Applications and Bolting
Annual Book of ASTM Standards, Vol 03.02.
8
Materials for Piping and Special Purpose Applications. Available from Manufacturers Standardization Society of the Valve and Fittings
Current edition approved Mar. 10, 1998. Published September 1998. Industry, 1815 N. Fort Myer Drive, Arlington, VA 22209.
2 9
Annual Book of ASTM Standards, Vol 01.03. Available from American Society of Mechanical Engineers, 345 E. 47th Street,
3
Annual Book of ASTM Standards, Vol 01.05.
...

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3.1 The compression resistance perpendicular to the faces, the resistance to the extrusion during compression, and the ability to recover after release of the load are indicative of a joint filler's ability to continuously fill a concrete expansion joint and thereby prevent damage that might otherwise occur during thermal expansion. The asphalt content is a measure of the fiber-type joint filler's durability and life expectancy. In the case of cork-type fillers, the resistance to water absorption and resistance to boiling hydrochloric acid are relative measures of durability and life expectancy.
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1.1 These test methods cover the physical properties associated with preformed expansion joint fillers. The test methods include:    
Property  
Section  
Expansion in Boiling Water  
7.1  
Recovery and Compression  
7.2  
Extrusion  
7.3  
Boiling in Hydrochloric Acid  
7.4  
Asphalt Content  
7.5  
Water Absorption  
7.6  
Density  
7.7
Note 1: Specific test methods are applicable only to certain types of joint fillers, as stated herein.  
1.2 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.  
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