ASTM A989/A989M-07
(Specification)Standard Specification for Hot Isostatically-Pressed Alloy Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
Standard Specification for Hot Isostatically-Pressed Alloy Steel Flanges, Fittings, Valves, and Parts for High Temperature Service
ABSTRACT
This specification covers hot isostatically-pressed, powder metallurgy, alloy steel piping components such as flanges, fittings, valves, and similar parts for use in pressure systems and high-temperature services. Compacts shall be manufactured by placing a single powder blend into a can, evacuating the can, and sealing it. The entire assembly shall be heated and placed under sufficient pressure for a sufficient period of time to ensure that the final consolidated part meets the density requirements. The powder shall be prealloyed and made by a melting method such as vacuum induction melting followed by gas atomization. Alloy steels shall undergo annealing, liquid quenching, and tempering in accordance to heat treatment temperature and cooling media requirements. The steel both as a blend and as a part shall conform to the chemical composition requirements for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, columbium, tantalum, and titanium. Density measurement, microstructural examination, and hydrostatic, tension, hardness, and fatigue tests shall be performed; wherein, the specimens shall conform to the specified structural integrity and mechanical property requirements such as porosity, microstructure, tensile strength, yield strength, elongation, reduction of area, and Brinell hardness.
SCOPE
1.1 This specification covers hot isostatically-pressed, powder metallurgy, alloy 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 alloy 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, 8.1, 8.2, and 9.5-9.7 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 to determine the applicability of regulatory limitations prior to use.
General Information
Relations
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: A989/A989M – 07
Standard Specification for
Hot Isostatically-Pressed Alloy Steel Flanges, Fittings,
1
Valves, and Parts for High Temperature Service
This standard is issued under the fixed designationA989/A989M; 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 (´) indicates an editorial change since the last revision or reapproval.
1. Scope* A275/A275M Practice for Magnetic Particle Examination
of Steel Forgings
1.1 This specification covers hot isostatically-pressed, pow-
A370 Test Methods and Definitions for Mechanical Testing
der metallurgy, alloy steel piping components for use in
of Steel Products
pressure systems. Included are flanges, fittings, valves, and
A751 Test Methods, Practices, andTerminology for Chemi-
similar parts made to specified dimensions or to dimensional
cal Analysis of Steel Products
standards, such as in ASME Specification B16.5.
B311 Test Method for Density of Powder Metallurgy (PM)
1.2 Several grades of alloy steels are included in this
Materials Containing Less Than Two Percent Porosity
specification.
E165 PracticeforLiquidPenetrantExaminationforGeneral
1.3 Supplementary requirements are provided for use when
Industry
additional testing or inspection is desired. These shall apply
E340 Test Method for Macroetching Metals and Alloys
only when specified individually by the purchaser in the order.
E606 Practice for Strain-Controlled Fatigue Testing
1.4 This specification is expressed in both inch-pound units
2.2 MSS Standard:
and in SI units. Unless the order specifies the applicable “M”
SP 25 Standard Marking System for Valves, Fittings,
specification designation (SI units), however, the material shall
3
Flanges, and Unions
be furnished to inch-pound units.
2.3 ASME Specifications and Boiler and Pressure Vessel
1.5 The values stated in either inch-pound units or SI units
Codes:
are to be regarded separately as the standard. Within the text,
B16.5 Dimensional Standards for Steel Pipe Flanges and
theSIunitsareshowninparentheses.Thevaluesstatedineach
4
Flanged Fittings
system are not exact equivalents; therefore, each system must
2.4 ASME Section IX Welding Qualifications:
be used independently of the other. Combining values from the
SFA-5.5 Specification for Low-Alloy Steel Covered Arc-
two systems may result in nonconformance with the specifi-
4
Welding Electrodes
cation.
1.6 The following safety hazards caveat pertains only to test
3. Terminology
methods portions, 8.1, 8.2, and 9.5-9.7 of this specification:
3.1 Definitions of Terms Specific to This Standard:
This standard does not purport to address all of the safety
3.1.1 can, n—the container used to encapsulate the powder
concerns, if any, associated with its use. It is the responsibility
during the pressure consolidation process that is removed
of the user of this standard to establish appropriate safety and
partially or fully from the final part.
health practices and to determine the applicability of regula-
3.1.2 compact, n—the consolidated powder from one can
tory limitations prior to use.
that may be used to make one or more parts.
2. Referenced Documents 3.1.3 consolidation, n—the bonding of adjacent powder
2
particles in a compact under pressure by heating to a tempera-
2.1 ASTM Standards:
ture below the melting point of the powder.
3.1.4 fill stem, n—thepartofthecompactusedtofillthecan
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
that is not usually integral to the part produced.
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.22 on Steel Forgings andWrought Fittings for PipingApplications and Bolting
Materials for Piping and Special Purpose Applications.
Current edition approved Sept. 1, 2007. Published October 2007. Originally
3
approved in 1998. Last previous edition approved in 2005 as A989/A989M – 05. AvailablefromManufacturersStandardizationSocietyoftheValveandFittings
DOI: 10.1520/A0989_A0989M-07. Industry (MSS), 127 Park St., NE, Vienna, VA 22180-4602, http://www.mss-
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or hq.com.
4
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from American Society of Mechanical Engineers (ASME), ASME
Standards volume information, refer to the standard’s Document Summary page on International Headquarters, Three Park Ave., New York, NY 10016-5990, http://
the ASTM website. www.asme.org.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1
---------------------- Page: 1 ---------------------
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.