ASTM A985/A985M-16
(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 Specification
ASTM Designation
Steel Castings, Carbon, Suitable for Fusion Welding,
A216/A216M
for High-Temperature Service
Steel Castings, Martensitic Stainless and Alloy, for
A217/A217M
Pressure-Containing Parts, Suitable for High-
Temperature Service
Castings, Austenitic, Austenitic-Ferritic (Duplex),
A351/A351M
for Pressure-Containing Parts
Steel Castings, Ferritic and Martensitic, for Pressure-
A352/A352M
Containing Parts, Suitable for Low-Temperature
Service
Steel Castings, Alloy, Specially Heat-Treated, for
A389/A389M
Pressure-Containing Parts, Suitable for High-
Temperature Service
Steel Castings Suitable for Pressure Service
A487/A487M
Castings, Iron-Nickel-Chromium and Nickel Alloys, Spe-
cially Controlled for Pressure Retaining Parts for
Corrosive Service
A990/A990M
Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for
Pressure-Containing Parts
A995/A995M
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 SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance with the standard.
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:A985/A985M −16
Standard Specification for
Steel Investment Castings General Requirements, for
1
Pressure-Containing Parts
This standard is issued under the fixed designationA985/A985M; 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* 1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the
1.1 This specification covers a group of common require-
responsibility of the user of this standard to establish appro-
ments that are mandatory for steel castings produced by the
priate safety and health practices and determine the applica-
investment casting process for pressure-containing parts under
bility of regulatory limitations prior to use.
each of the following ASTM Specifications:
Title of Specification ASTM Designation
2. Referenced Documents
Steel Castings, Carbon, Suitable for Fusion Welding, A216/A216M
2
2.1 ASTM Standards:
for High-Temperature Service
Steel Castings, Martensitic Stainless and Alloy, for A217/A217M
A216/A216M SpecificationforSteelCastings,Carbon,Suit-
Pressure-Containing Parts, Suitable for High-
able for Fusion Welding, for High-Temperature Service
Temperature Service
Castings, Austenitic, Austenitic-Ferritic (Duplex), A351/A351M A217/A217M Specification for Steel Castings, Martensitic
for Pressure-Containing Parts
Stainless and Alloy, for Pressure-Containing Parts, Suit-
Steel Castings, Ferritic and Martensitic, for Pressure- A352/A352M
able for High-Temperature Service
Containing Parts, Suitable for Low-Temperature
Service
A351/A351M Specification for Castings, Austenitic, for
Steel Castings, Alloy, Specially Heat-Treated, for A389/A389M
Pressure-Containing Parts
Pressure-Containing Parts, Suitable for High-
A352/A352M Specification for Steel Castings, Ferritic and
Temperature Service
Steel Castings Suitable for Pressure Service A487/A487M
Martensitic, for Pressure-Containing Parts, Suitable for
Castings, Iron-Nickel-Chromium and Nickel Alloys, Spe- A990/A990M
Low-Temperature Service
cially Controlled for Pressure Retaining Parts for
Corrosive Service A370 Test Methods and Definitions for Mechanical Testing
Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for A995/A995M
of Steel Products
Pressure-Containing Parts
A380 Practice for Cleaning, Descaling, and Passivation of
1.2 This specification also covers a group of supplementary
Stainless Steel Parts, Equipment, and Systems
requirements,whichmaybeappliedtotheabovespecifications
A389/A389M Specification for Steel Castings, Alloy, Spe-
as indicated therein. These requirements are provided for use
cially Heat-Treated, for Pressure-Containing Parts, Suit-
when additional testing or inspection is desired and apply only
able for High-Temperature Service
when specified individually by the purchaser in the order.
A487/A487M Specification for Steel Castings Suitable for
1.3 Wheninvestmentcastingisordered,therequirementsof
Pressure Service
this specification shall take precedence over the individual
A488/A488M Practice for Steel Castings, Welding, Qualifi-
material specification requirements.
cations of Procedures and Personnel
A609/A609M Practice for Castings, Carbon, Low-Alloy,
1.4 The values stated in either SI units or inch-pound units
and Martensitic Stainless Steel, Ultrasonic Examination
are to be regarded separately as standard. The values stated in
Thereof
each system may not be exact equivalents; therefore, each
A751 Test Methods, Practices, and Terminology for Chemi-
system shall be used independently of the other. Combining
cal Analysis of Steel Products
values from the two systems may result in non-conformance
A800/A800M Practice for Steel Casting, Austenitic Alloy,
with the standard.
Estimating Ferrite Content Thereof
1
This specification is under the jurisdiction ofASTM Committee A01 on Steel,
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
2
A01.18 on Castings. For referenced ASTM standards, visit the ASTM website, www.astm.org, or
Current edition approved Dec. 1, 2016. Published December 2016. Originally contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
approved in 1998. Last previous edition approved in 2014 as A985/A985M – 14. Standards volume information, refer to the standard’s Document Summary page on
DOI: 10.1520/A0985_A0985M-16. 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
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This document is not an ASTM standard and is intended only to provide the user of an ASTM 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 − 14 A985/A985M − 16
Standard Specification for
Steel Investment Castings General Requirements, for
1
Pressure-Containing Parts
This standard is issued under the fixed designation A985/A985M; 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*
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 Specification ASTM Designation
Steel Castings, Carbon, Suitable for Fusion Welding, A216/A216M
for High-Temperature Service
Steel Castings, Martensitic Stainless and Alloy, for A217/A217M
Pressure-Containing Parts, Suitable for High-
Temperature Service
Castings, Austenitic, Austenitic-Ferritic (Duplex), A351/A351M
for Pressure-Containing Parts
Steel Castings, Ferritic and Martensitic, for Pressure- A352/A352M
Containing Parts, Suitable for Low-Temperature
Service
Steel Castings, Alloy, Specially Heat-Treated, for A389/A389M
Pressure-Containing Parts, Suitable for High-
Temperature Service
Steel Castings Suitable for Pressure Service A487/A487M
Castings, Iron-Nickel-Chromium and Nickel Alloys, Specially A990
Controlled for Pressure Retaining Parts for
Corrosive Service
Castings, Iron-Nickel-Chromium and Nickel Alloys, Spe- A990/A990M
cially Controlled for Pressure Retaining Parts for
Corrosive Service
Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for A995/A995M
Pressure-Containing Parts
Castings, Austenitic-Ferritic (Duplex) Stainless Steel, for A995/A995M
Pressure-Containing Parts
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 SI units or inch-pound units are to be regarded separately as standard. 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 non-conformance with the standard.
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.
1
This specification 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.
Current edition approved Oct. 1, 2014Dec. 1, 2016. Published October 2014December 2016. Originally approved in 1998. Last previous edition approved in 20132014
as A985/A985M – 13.A985/A985M – 14. DOI: 10.1520/A0985_A0985M-14.10.1520/A0985_A0985M-16.
*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 ----------------------
A985/A985M − 16
2. Referenced Documents
2
2.1 ASTM Standards:
A216/A216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
A217/A217M Specification for Steel Castings, Martensitic Stainless and Alloy, for Pressure-Containing Parts, Suitable for
High-Temperature Service
A351/A351M Specification for Castings, Austenitic, for Pressure-Containing Parts
A352/A352M Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-
Temperature Service
A370 Test Methods and Definitions for Mechanical Testing of Steel Products
A380 Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
A389/A389M Specification for Steel Castings, Alloy, Specially Heat-Treated, for Pressure-Containing Parts, Suitable for
High-Temperature Service
A487/A487M Specification for Steel Castings Suitable for Pressure Service
A488/A488M Practice for
...
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