ASTM A217/A217M-22

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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: A217/A217M − 20 A217/A217M − 22 Endorsed by Manufacturers Standardization Society
of the Valve and Fittings Industry
Endorsed by American Foundrymen’s Society
Used in USDOE-NE Standards
Standard Specification for
Steel Castings, Martensitic Stainless and Alloy, for
Pressure-Containing Parts, Suitable for High-Temperature
Service
This standard is issued under the fixed designation A217/A217M; 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.
This standard has been approved for use by agencies of the U.S. Department of Defense.
1. Scope*
1.1 This specification covers martensitic stainless steel and alloy steel castings for valves, flanges, fittings, and other
pressure-containing parts (Note 1) intended primarily for high-temperature and corrosive service (Note 2).
1.2 One grade of martensitic stainless steel and nine grades of ferritic alloy steel are covered. Selection will depend on design and
service conditions, mechanical properties, and the high-temperature and corrosion-resistant characteristics (Note 3).
NOTE 1—Carbon steel castings for pressure-containing parts are covered by Specification A216/A216M. Low alloy quench-and-tempered grades
equivalent to Specification A217/A217M grades may be found in both Specifications A352/A352M and A487/A487M.
NOTE 2—The grades covered by this specification represent materials that are generally suitable for assembly with other castings or wrought steel parts
by fusion welding. It is not intended to imply that these grades possess equal degrees of weldability; therefore, it is the responsibility of the purchaser
to establish for himself a suitable welding technique. Since these grades possess varying degrees of suitability for high-temperature and corrosion-resistant
service, it is also the responsibility of the purchaser to determine which grade shall be furnished, due consideration being given to the requirements of
the applicable construction codes.
NOTE 3—The committee formulating this specification has included nine grades of materials that are considered to represent basic types of ferritic alloy
steels suitable for valves, flanges, fittings, and other pressure-containing parts. Additional alloy steels that may better fulfill certain types of service will
be considered for inclusion in this specification by the committee as the need becomes apparent.
1.3 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 nonconformance with the standard.
1.4 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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 May 1, 2020March 1, 2022. Published May 2020March 2022. Originally approved in 1939. Last previous edition approved in 20142020 as
A217/A217M – 14.A217/A217M – 20. DOI: 10.1520/A0217_A0217M-20.10.1520/A0217_A0217M-22.
For ASME Boiler and Pressure Vessel Code applications, see related Specification SA-217/SA 217M in Section II of that code.
*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
A217/A217M − 22
2. Referenced Documents
2.1 ASTM Standards:
A216/A216M Specification for Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
A352/A352M Specification for Steel Castings, Ferritic and Martensitic, for Pressure-Containing Parts, Suitable for Low-
Temperature Service
A487/A487M Specification for Steel Castings Suitable for Pressure Service
A488/A488M Practice for Steel Castings, Welding, Qualifications of Procedures and Personnel
A703/A703M Specification for Steel Castings, General Requirements, for Pressure-Containing Parts
A802/A802M Practice for Steel Castings, Surface Acceptance Standards, Visual Examination
A985/A985M Specification for Steel Investment Castings General Requirements, for Pressure-Containing Parts
2.2 AWS Specifications:
A5.5/A5.5M Low-Alloy Steel Electrodes for Shielded Metal Arc Welding
A5.23/A5.23M Low-Alloy Steel Electrodes and Fluxes for Submerged Arc Welding
A5.28/A5.28M Low Alloy Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding
A5.29/A5.29M Low-Alloy Steel Electrodes for Flux Cored Arc Welding
3. General Conditions for Delivery
3.1 Except for investment castings, castings furnished to this specification shall conform to the requirements of Specification
A703/A703M, including any supplementary requirements that are indicated in the purchase order. Failure to comply with the
general requirements of Specification A703/A703M constitutes nonconformance with this specification. In case of conflict between
the requirements of this specification and Specification A703/A703M, this specification shall prevail.
3.2 Steel investment castings furnished to this specification shall conform to the requirements of Specification A985/A985M,
including any supplementary requirements that are indicated in the purchase order. Failure to comply with the general requirements
of Specification A985/A985M constitutes nonconformance with this specification. In case of conflict between the requirements of
this specification and Specification A985/A985M, Specification A985/A985M shall prevail.
4. Ordering Information
4.1 The inquiry and order should include or indicate the following:
4.1.1 A description of the casting by pattern number or drawing (dimensional tolerances shall be included on the casting drawing),
4.1.2 Grade of steel,
4.1.3 Options in the specification,
4.1.4 Whether the castings are to be produced using the investment casting process, and
4.1.5 The supplementary requirements desired, including the standards of acceptance.
5. Heat Treatment
5.1 All castings shall receive a heat treatment proper to their design and chemical composition.
5.2 Castings shall be furnished in the normalized and tempered conditions; Grades WC1, WC4, WC5, WC6, and CA15 shall be
tempered at 1100 °F [595 °C] min; Grades WC9, C5, C12, and WC11 shall be tempered at 1250 °F [675 °C] min; Grade C12A
shall be thermally treated, either by normalizing and tempering or by accelerated cooling from the austenitizing temperature by
air blasting or liquid quenching, followed by tempering. C12A castings shall be austenitized at 1900 to 1975 °F [1040 to 1080 °C]
and tempered at 1350 to 1470 °F [730 to 800 °C].
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A217/A217M − 22
5.3 Heat treatment shall be performed after castings have been allowed to cool below the transformation range.
6. Chemical Composition
6.1 The steel shall be in accordance with the requirements as to chemical composition prescribed in Table 1 (Note 4).
NOTE 4—The role of alloying elements in the development of Grade C12A has been extensively investigated. V and CbNb contribute to precipitation
strengthening by forming fine and coherent precipitation of M(C,N)X carbo-nitrides in the ferrite matrix. V also precipitates as VN during tempering or
during creep. The two elements are more effective in combination. Therefore, the addition of strong nitride-forming elements, those with a stronger affinity
for nitrogen than CbNb and V, as deoxidation agents, interferes with these high-temperature strengthening mechanisms.
7. Mechanical Properties
7.1 Steel used for the castings shall conform to the requirements as to tensile properties given in Table 2.
7.2 C12A castings shall be hardness tested in accordance with Supplementary Requirement S13, and shall have a Brinell hardness
of 185-248 HBW.
8. Quality
8.1 The surface of the casting shall be examined visually and shall be free of adhering sand, scale, cracks, and hot tears. Other
surface discontinuities shall meet the visual acceptance standards specified in the order. Practice A802/A802M or other visual
standards may be used to define acceptable surface discontinuities and finish. Unacceptable visual surface discontinuities shall be
removed and their removal verified by visual examination of the resultant cavities. When methods involving high temperatures are
used in the removal of discontinuities, castings shall be preheated to at least the minimum temperatures in Table 3.
A,B
TABLE 1 Composition Requirements
Grade
UNS Number
Type
Element, %
WC1 WC4 WC5 WC6 WC9 WC11 C5 C12 C12A CA15
J12524 J12082 J22000 J12072 J21890 J11872 J42045 J82090 J84090 J91150
C-Mo Ni-Cr-Mo Ni-Cr-Mo Cr-Mo Cr-Mo Cr-Mo Cr-Mo Cr-Mo Cr-Mo-V Cr
Carbon 0.25 0.05–0.20 0.05–0.20 0.05–0.20 0.05–0.18 0.15–0.21 0.20 0.20 0.08-0.12 0.15
Manganese 0.50–0.80 0.50–0.80 0.40–0.70 0.50–0.80 0.40–0.70 0.50–0.80 0.40–0.70 0.35–0.65 0.30–0.60 1.00
C C C C
Phosphorus 0.04 0.04 0.04 0.035 0.035 0.020 0.04 0.035 0.025 0.040
C C C C C
Sulfur 0.045 0.045 0.045 0.035 0.035 0.015 0.045 0.035 0.010 0.025
Silicon 0.60 0.60 0.60 0.60 0.60 0.30–0.60 0.75 1.00 0.20–0.50 1.50
N
...