ASTM A985/A985M-04a
(Specification)Standard Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
Standard Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
ABSTRACT
This specification covers a group of common requirements that are mandatory for steel castings produced by the investment casting process for pressure-containing parts. Master heats shall be made by the electric furnace process with or without separate refining such as argon-oxygen-decarburization (AOD), vacuum-oxygen degassing (VOD), vacuum-induction-melting (VIM). Ferritic and martensitic steel shall be cooled after pouring to provide complete transformation of austenite prior to heat treatment to enhance mechanical properties. Chemical, heat, and product analyses shall be performed and the chemical composition thus determined shall conform to the prescribed values in carbon, manganese, silicon, phosphorus, sulfur, nickel, chromium, molybdenum, vanadium, tungsten, copper, and aluminum. Tensile testing shall be done on the castings and shall meet the required yield and tensile strength, elongation, and reduction of area. Each casting shall also be tested after machining to hydrostatic shell pressure test and shall not show any leaks.
SCOPE
1.1 This specification covers a group of common requirements, that are mandatory for steel castings produced by the investment casting process for pressure-containing parts under each of the following ASTM Specifications: Title of SpecificationASTM Designation Steel Castings, Carbon, Suitable for Fusion Welding A 216/A 216Mfor High-Temperature ServiceSteel Castings, Martensitic Stainless and Alloy, for A 217/A 217MPressure-Containing Parts Suitable for High-Temperature Service Castings, Austenitic, Austenitic-Ferritic (Duplex), A 351/A 351Mfor Pressure-Containing PartsSteel Castings, Ferritic and Martensitic, for Pressure- A 352/A 352MContaining Parts Suitable for Low-Temperature Service Steel Castings, Alloy, Specially Heat-Treated, for A 389/A 389MPressure-Containing Parts, Suitable for High-Temperature Service Steel Castings Suitable for Pressure Service A 487/A 487M
1.2 This specification also covers a group of supplementary requirements, which may be applied to the above specifications as indicated therein. These requirements are provided for use when additional testing or inspection is desired and apply only when specified individually by the purchaser in the order.
1.3 When investment casting is ordered, the requirements of this specification shall take precedence over the individual material specification requirements.
1.4 The values stated in either inch-pound or SI units are to be regarded separately as the standard. Within the text, the SI units are shown in brackets. The values in each system are not exact equivalent; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification. Inch-pound units are applicable for material ordered to Specification A 985 and SI units for material ordered to Specification A 985M.
1.5 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.
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Designation: A 985/A 985M – 04a
Standard Specification for
Steel Investment Castings General Requirements, for
1
Pressure-Containing Parts
This standard is issued under the fixed designationA 985/A 985M; 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* priate safety and health practices and determine the applica-
bility of regulatory limitations prior to use.
1.1 This specification covers a group of common require-
ments that are mandatory for steel castings produced by the
2. Referenced Documents
investment casting process for pressure-containing parts under
2
2.1 ASTM Standards:
each of the following ASTM Specifications:
A 216/A 216M Specification for Steel Castings, Carbon,
Title of Specification ASTM Designation
Suitable for Fusion Welding, for High-Temperature Ser-
Steel Castings, Carbon, Suitable for Fusion Welding, A 216/A 216M
vice
for High-Temperature Service
A 217/A 217M Specification for Steel Castings, Martensi-
Steel Castings, Martensitic Stainless and Alloy, for A 217/A 217M
tic Stainless and Alloy, for Pressure-Containing Parts,
Pressure-Containing Parts, Suitable for High-
Temperature Service
Suitable for High-Temperature Service
Castings, Austenitic, Austenitic-Ferritic (Duplex), A 351/A 351M
A 351/A 351M Specification for Castings, Austenitic,
for Pressure-Containing Parts
Austenitic-Ferritic(Duplex),forPressure-ContainingParts
Steel Castings, Ferritic and Martensitic, for Pressure- A 352/A 352M
Containing Parts, Suitable for Low-Temperature
A 352/A 352M Specification for Steel Castings, Ferritic
Service
and Martensitic, for Pressure-Containing Parts, Suitable
Steel Castings, Alloy, Specially Heat-Treated, for A 389/A 389M
for Low-Temperature Service
Pressure-Containing Parts, Suitable for High-
Temperature Service
A 370 Test Methods and Definitions for MechanicalTesting
Steel Castings Suitable for Pressure Service A 487/A 487M
of Steel Products
1.2 This specification also covers a group of supplementary A 389/A 389M Specification for Steel Castings, Alloy,
requirements,whichmaybeappliedtotheabovespecifications
Specially Heat-Treated, for Pressure-Containing Parts,
as indicated therein. These requirements are provided for use
Suitable for High-Temperature Service
when additional testing or inspection is desired and apply only
A 487/A 487M Specification for Steel Castings Suitable
when specified individually by the purchaser in the order.
for Pressure Service
1.3 Wheninvestmentcastingisordered,therequirementsof A 488/A 488M PracticeforSteelCastings,Welding,Quali-
this specification shall take precedence over the individual
fications of Procedures and Personnel
material specification requirements. A 609/A 609M Practice for Castings, Carbon, Low-Alloy,
1.4 The values stated in either inch-pound or SI units are to
and Martensitic Stainless Steel, Ultrasonic Examination
be regarded separately as the standard. Within the text, the SI Thereof
units are shown in brackets. The values in each system are not
A 751 Test Methods, Practices, and Terminology for
exact equivalents; therefore, each system must be used inde- Chemical Analysis of Steel Products
pendentlyoftheother.Combiningvaluesfromthetwosystems
A 800/A 800M Practice for Steel Casting,AustenticAlloy,
may result in nonconformance with this specification. Inch- Estimating Ferrite Content Thereof
pound units are applicable for material ordered to Specification
A 903/A 903M Specification for Steel Castings, Surface
A 985 and SI units for material ordered to Specification A Acceptance Standards, Magnetic Particle and Liquid Pen-
985M.
etrant Inspection
1.5 This standard does not purport to address all of the A 941 Terminology Relating to Steel, Stainless Steel, Re-
safety concerns, if any, associated with its use. It is the
lated Alloys, and Ferroalloys
responsibility of the user of this standard to establish appro- A 991/A 991M Test Method for Conducting Temperature
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel,
2
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee For referenced ASTM standards, visit the ASTM website, www.astm.org, or
A01.18 on Castings. contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
Current edition approved July 1, 2004. Published July 2004. Originally approved Standards volume information, refer to the standard’s Document Summary page on
in 1998. Last previous edition approved in 2004 as A 985/A 985M – 04. the ASTM website.
*A Summary of Changes section appears at the end of this standard.
Copyright © ASTM International, 100 Barr Harbor D
...
This document is not anASTM standard and is intended only to provide the user of anASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation:A985/A985M–03 Designation: A 985/A 985M – 04a
Standard Specification for
Steel Investment Castings General Requirements, for
1
Pressure-Containing Parts
This standard is issued under the fixed designationA 985/A 985M; 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*
1.1 This specification covers a group of common requirements, whichrequirements that are mandatory for steel castings
produced by the investment casting process for pressure-containing parts under each of the following ASTM Specifications:
Title of Specification ASTM Designation
Steel Castings, Carbon, Suitable for Fusion Welding A 216/A 216M
Steel Castings, Carbon, Suitable for Fusion Welding, A 216/A 216M
for High-Temperature Service
Steel Castings, Martensitic Stainless and Alloy, for A 217/A 217M
Pressure-Containing Parts Suitable for High-
Pressure-Containing Parts, Suitable for High-
Temperature Service
Castings, Austenitic, Austenitic-Ferritic (Duplex), A 351/A 351M
for Pressure-Containing Parts
Steel Castings, Ferritic and Martensitic, for Pressure- A 352/A 352M
Containing Parts Suitable for Low-Temperature
Containing Parts, Suitable for Low-Temperature
Service
Steel Castings, Alloy, Specially Heat-Treated, for A 389/A 389M
Pressure-Containing Parts, Suitable for High-
Temperature Service
Steel Castings Suitable for Pressure Service A 487/A 487M
1.2 This specification also covers a group of supplementary requirements, which may be applied to the above specifications as
indicated therein. These requirements are provided for use when additional testing or inspection is desired and apply only when
specified individually by the purchaser in the order.
1.3 When investment casting areis ordered, the requirements of this specification shall take precedence over the individual
material specification requirements.
1.4 The values stated in either inch-pound or SI units are to be regarded separately as the standard. Within the text, the SI units
are shown in brackets. The values 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 this specification. Inch-pound units are
applicable for material ordered to Specification A 985 and SI units for material ordered to Specification A 985M.
1.5 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.
2. Referenced Documents
2
2.1 ASTM Standards:
A 216/A 216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
A 217/A 217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for
High-Temperature Service
A 351/A 351M Specification for Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-Containing Parts
A 352/A 352M Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for
Low-Temperature Service
1
This practice is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.18
on Castings.
e1
Current edition approved April 10, 2003. Published May 2003. Originally approved in 1998. Last previous edition approved in 2001 as A985 – 01a .
Current edition approved July 1, 2004. Published July 2004. Originally approved in 1998. Last previous edition approved in 2004 as A 985/A 985M – 04.
2
For referencedASTM standards, visit theASTM website, www.astm.org, or contactASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
, Vol 01.02.volume information, refer to the standard’s Document Summary page on the ASTM website.
*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
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A 985/A 985M – 04a
A 370 Test Methods and Definitions for Mechanical Testing of Steel Products
A 389/A 389M Specification for Steel Castings, Alloy, Specially Heat-Treated, fo
...
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